Thank you all for suggesting such terrific video ideas, including this one! Here are a couple of links for bike engine kits, but highly recommend shopping around for a better price. Thanks again and best regards, Todd. 4 stroke bike engine kit: amzn.to/2YrDHZ5 2 stroke bike engine kit: amzn.to/3l7P5TG
Thomas Bostick 120 for the 2 stroke and 150 to 170 for the 4 stroke. The four stoke is worth it It is much more reliable. I have used it to ride to work after I sold my car.
I’m 13, and my dad is a mechanic, I just kinda wanted to show him that I was interested in working on engines because I ride with him, but don’t know how to fix anything, that 2 stroke kit is coming for me in a couple days.
It’s a very rare thing for such a big YT channel to read and reply to most comments, I’d like to say thank you for taking the time and trouble to do so.
Not only that, PF knows what he's doing with these kits. I'm in a nanny-state of a country (Australia) where these things are illegal, but I like to ride a bicycle, so I've watched a few of these conversion kit videos. This one and the two-stroke one, despite being brief and not 'step-by-step' are still the most thorough and well thought out examples.
@@MattExzy as someone who lives in south australia (pussy state) even the 200w compliant 2 stroke kits are illegal, yet the cops dont pull me over when i whizz past them on my 2500w electric bike at 60kph (or when i out accelerate them at the lights)
The 2-stroke and the 4-stroke videos were both excellent, and presented with your customary precision, confidence, and gusto. Looking forward to your next video.
Lifelong biker here. Loved watching both these vids, shame these engines are illegal for road use in the UK. Top tip for the handlebar grips; when fitting new ones, use hairspray!! The solvent evaporates after half hour, and the gentle adhesive in it will keep the grips on there for life!!
Or use ODI bolt-on handlebar grips. I started using those when they first came out for mountain bikes decades ago, and I will never go back to slide-on/cut-off handlebar grips. They're such a pain when you need to service the brake levers or shifters.
If every DIY video on TH-cam was this detailed (for beginners and intermediate hobbyists) I would never have to do any research lol. Thanks again, Project Farm!
“Don’t use gorilla tape, I want to get this off...”. That is the most accurate description of gorilla tape I’ve heard. That tape is like epoxy. I’ve used to to install a license plate temporarily, and when I wanted to install it with screws, I decided just to keep the gorilla tape it was so clearly adhered to the plastic bumper. It was like that for well over a year. Great video
I ised it for some quick and dirty bidy work on a black car. It didn't look too bad! And the plastic pieces I taped stayed together until sombody bought the car from me. (I showed them the repair).
Man if you think Gorilla Tape is good, buy yourself a roll of T-REX Tape. Gorilla tape is epoxy, T-REX tape is the tape version of welding. The madlad @ProjectFarm pulled a small tractor with one loop of the stuff.
I’m having flashback to my friends and building out our mini bikes. “Master link keeper” started to give me flashbacks. Love your videos!!! Always fantastic
The 4 stroke Engine performance can be increased very easily with just a bit of carburetor and exhaust modifications. I opened up the fuel & air circuits and added a better breathing air filter . Modified the exhaust pipe as well. It gained 8 mph @ WOT and has much better acceleration and power throughout the rpm range. I would estimate it gained at least a single HP . But probably not much more than that. It definitely woke up because a 25% increase in Top speed is significant irregardless of engine displacement. It had a previous Top Speed of 36 MPH and now consistantly runs 44-45 mph
@@ProjectFarm might be if it stays together . I may have sped up not only the bicycle but the engines day with death. And maybe Ive increased its life span by making it more efficient. One will never know. But the intake charge running richer has made it run a bit cooler and the speed increase helps with the cooling as well. So that definitely adds to efficiency and efficiency adds to higher average power production throughout the RPM range . Time will tell. But It is pretty impressive to me that it will now take off on engine only power carring someone my size ( 6' 2" and 221 lbs . Its no dragster but does indeed pull off with a increasing speed and RPMs without bog or hesitation . It definitely wouldnt originally. Im sure its pretty hard on it to do so . But it does do it.
Holy moly...anything over 40mph on a bike is dangerous. My top speed down a local mountain road is about 47mph on a mtn bike and that was nuts... Honestly.i'd stick right around 30mph if you don't want to die... and keep the reserve speed for when a band of backwood bandits start chasing you.
@@GorillaCookies Except you're talking about motorcycles. Bicycles are not meant for all that weight, forces and vibrations at those speeds. He is very smart for sticking it in the 30mph and if that. You compare the two only shows that you're most in danger, because ignorance is a killer.
Thanks for another great video. I watched both the 2 and 4 stroke videos and enjoyed them. Riding a bike at 37 mph is pretty brave. This has me thinking about building one for myself.
I love your show, I've been with the Home Depot for almost 22 years now. I recommend your show whenever someone has questions on products you've tested. They make a 12v turbo/super charger for around $100. It might be fun to hook that up to your 4 stroke bike motor to see what it does.
Nighthawk in light did a show where he built a wood gasifier for fuel. I've been using 2 stroke kits for a few years. I think I'm gonna build with the 4 stroke kit next.
I did one, it’s honestly a great way to pass the time. Putting it together is one thing, tuning and modding it once you find out the potential they have is another. Lotta fun you can have
Had the same trouble with the filter box not fitting in the frame for mine. The kit I used came with much better instructions, but I would have traded those for your all metal clutch. Mine has a plastic outer cover that was cracked on arrival. I've never seen cheaper cardboard than the box the kit arrived in.
I was like... "oh NightHawkinLight... he hasn't posted in forever, lemme see what's up.." I was unsubscribed.. I didn't do that, and that's not the first time that has happened, it happened with VSauce3 recently as well.... Why is TH-cam unsubbing me from random channels?! Has anyone else had this issue?
If the airbox don't fit, build a small ram-air intake using a length of vacuum hose and reposition the air box/ filter. That should take care of your problem.
Plus you don't have to pre-mix the gasoline..just change the oil on a regular basis (I don't think these little motors have filters and just like a Honda Rebel 250, gotta change the oil often to get rid of any gunk that might build up)
@@ChefofWar33 Electric has much higher MPGe (around 900 MPGe) ,much less indirect harmful CO2 emissions per distance traveled,you can pedal along bionically with the motor but doesn't have the advantage of easy refilling of fuel and nearly unlimited range as the battery takes hours to charge up. If you want exercise plus ease of going up hills electric is the way to go. I've gone 46 miles on an electric bike in range. If you want unlimited range with easy gas refills at a gas station an I.C.E. bike is better. Also it depends on state laws too. Many states won't allow I.C.E. bicycles on streets,roads or highways. In my particular state of Washington I.C.E. bicycles are considered unlawful non licensable motor vehicles. Considering the amazing MPG's you can get on a 4 cycle I.C.E. bicycle engine perhaps 200 MPG it would make sense to have them made lawful to combat anthropogenic CO2 emissions (Climate Change,Ocean acidification,Sea rise etc.) by having people ride these rather than inefficient heavy motor vehicles (passenger cars) which have a vastly lower MPG rating. Electric bikes serve one purpose and I.C.E. bikes serve usually a different one. They can compliment each other too.
Build a forced air intake for the 4 stroke (Turbo or Super). Completely ridiculous for such a small engine but I mean it's an engine on a bicycle already so why not try going a little silly....
Fun idea, but from my research, very difficult. Most single cylinders can't provide a steady enough exhaust stream for a turbo, need a lot of RPM. Takes a lot of knowledge with carb sizing, placement, tuning and ignition timing.
I just wanted to say that I had one of the 2 stroke kits and I used this as my only transportation for about a year ( then it got stolen) and there is most definitely a lot of maintenance involved with the 2 stroke and quite a bit of a learning curve with doing that. The most important thing I found was making sure the chain tensioner was properly aligned and tightened. I had a chain break and that was no fun at all. Also having good tires and thick tubes is a must. Lastly I would never recommend buying one of these kits for a young child to ride, the bike is fun to ride and all but just not engineered for those kinds of speeds. I'm a grown man and it took all of my attention not to get killed on mine when riding around in Las Vegas, probably better off that it got stolen because it was just a matter of time.
My 2 stroke 125 needs like no maintenance compared to a 4 stroke. I dont know what your talking about .you must not have a good engine or sounds like your talking about maintenance of the bike more than the engine
@@theonewhoknows2 Yeah usually a 2-stroke only need the oil mixed in and a good carb tune and away it goes. The 4-stroke especially cheaper ones will have to always be valve adjusted in order to maintain good efficiency and reliability. Plus it's more moving parts that wear out eventually, the 2-stroke is the king of simplicity.
@@Tomazack yea exactly, my cr125 has only had a couple problems like a clogged jet , besides that it always runs and idles no problem. It likes the crappy autolite spark plugs or ngk as once i had a iridium spark plug and put it in and it burnt out the first time i started it with it.Most reliable engine i have ever come across
I agree with you about the safety concerns. I was thinking about the fun and efficiency, etc. but after my own experience riding human powered bikes on wet downhill roads, I felt myself struggling to keep control. After seven miles of getting soaked by the rain, then realizing that my front brakes had come loose, your message reminded me of the potential dangers of a powered bike. Unlike motorcycles, which can also be deadly, bikes haven't enough weight to aid in control during high winds and bad weather. Too risky for me.
Man, I have throughly enjoyed your videos since stumbling onto them a few weeks ago. Great content, no flashy "youtube" voice, and you never take endorsements. Perfect channel! Proud subscriber!
aaah this guy is such a joy to listen to. Never trying to be funny, none of that 'personality' and 'brand' building lots of other YT channels engage in. This man uses verbal communication exclusively to convey information and I love it.
One big advantage that the 4 stroke has over the 2 stroke is that you can literally pull up to a gas station with the 4 stroke fuel up straight to the tank. Where as the 2 stroke you will need a little gas tank of premix with you at all times for long trips etc... Really Enjoyed this video Project Farm!
Or go one step further and install a Jackshaft and use the existing rear wheel mountain bike sprockets as a form of gears to get some good speed from your bike.
I had never considered a gas powered bike before but that looks like a lot of fun. I think I prefer the four stroke over the two. If I can use a kit like that on the bikes with the large tires I think I would be rolling!
Thanks for posting this... I've been wanting to build one myself for some time but was a little intimidated by the complexity of the job, having never done a project like this before... But, the easy, straight forward way you did it have me the confidence to take the plunge a give it a go. I think...lol👍😃
About 40 years ago I put a chainsaw engine on an old 20" 5 speed. I use to fly all over the place, not knowing that was irritating people. I was riding it down near the beach once, and was stopped by a cop that I had a few run-ins with back then. The asshole was happy he got the chance to give me quite a few tickets that forced me to be unable to get a license till I was 21. Driving a motorbike without an operators license, no registration, no lights or required safety equipment crap. I remember standing there in court and instead of the judge saying something nice like " you built that thing yourself" ? No, instead he said " you seem to do what you damn well please don't you." Then told me I better be careful how I answer. I never did get the bike back. But boy did I have a hate for cops after that. And that wore off too. 30 years later.
I live in Southern Arizona. We can ride a bike legally as long as it is under 50cc, has a mirror, headlight, tail light, and foot pegs if you carry a passenger (pegs pointless on a motorized bicycle). Eye protection is required at all times, helmets by law for anyone under 18 years of age. What make them a "motorcycle" is fixed pegs and you have to license, register, and insure it. You also need a motorcycle endorsement on your license. For the most part, the cops in my hometown leave bike riders alone unless one of us does something stupid like running stop signs, excessive speed or something similar. I've had Pima County Sheriffs follow me but none made a move to light me up.
yeah ive had a similar experience, i got dinged 2 grand worth of fines when i was younger on an engine bike, just part of the game, some cops are dicks, they will end up shot eventually tho karma works itself out
I see China makes electric conversion kits for bikes, it would be great to compare their power, range, and ease of assembly. You have one of the best channels on TH-cam, look forward to the next project as always.
l have never tried the 4 stroke kits but have on the 2 stroke, the build quality on the 2 stroke is real cheap with lots of failures, plus most states limit you to under 50 cc so they are not legal if they wanted to bust your balls, , that 4 stroke kit supprised me on its top speed, one question l was thinking how did they do when pulling a hill?, thanks again for making great videos, you are at the top for me,
Hi Mustie1! Great point on the 2 stroke kits. This 4 stoke kit seems to have a very good engine on it, but I'm not sure how the clutch will hold up. The 2 stroke did much better on the hills, but the 4 stroke would do a terrific job with a larger back sprocket. I really enjoy your videos and congratulations on 200K subscribers!
The 4-stroke engine produces more torque and has a wider powerband, even if the _peak_ horsepower is lower than the 2-stroke engine, because the 4-stroke engine has valves to keep fresh air and fuel from leaking out through the exhaust at low RPM. Also, the 4-stroke is less annoying to listen to at full-throttle for long periods of time.
@@ProjectFarm: On a related note, this is why 2-stroke snowmobile engines have exhaust valves, unlike most 2-stroke engines -- to widen the powerband by preventing fresh air and fuel from leaking out through the exhaust at low RPM. If you've ever tried to drive through snow, you know you can't afford to have a lack of low-RPM torque. I wonder if someone offers a 2-stroke valved engine that's small enough to attach to a bicycle?
@@deusexaethera That's not how 2stroke exhaust "valves" work. The piece you are referring too is called a power valve. All it does is reduce the overall surface area of the exhaust port at low RPM. It does not eliminate air leakage or movement, nor is it intended to.
@@turbolq4: It seems you are correct. I could've sworn I saw a schematic of a 2-stroke engine with a proper pushrod-actuated poppet valve for the exhaust once upon a time, but I can't find it now. Maybe it only worked well on paper and was abandoned, I dunno.
You may be thinking of the Detroit Diesel design from the mid-70s. Used a top end set of valves, a blower, and a piston system that operated as the intake valve exclusively. When the piston goes down on that system, it opens the overhead valves, pushes all the exhaust gasses out via the blower, then closes the valves and pre-pressurizes the cylinder. As the cylinder approaches top dead center, the fuel is injected, and auto-ignites. @@deusexaethera
6:40 An additional safety move would be to drill through the tensioner bracket and into the bike's frame to install a lock bolt to keep the tensioner from rotating into the spokes if a tensioner is needed.
7:08 Removing that heat shield is the opposite of what you want... the motor has a built in fan, and that shroud is what keeps the air in contact with the cylinder cooling fins... now, the air blows out of the fan, and just goes wherever instead around the cylinder like it's supposed to...
That little honda clone engine was designed for stationary work, running a generator for example. Taking the heat shield off shouldnt hurt anything as long as you dont let it sit for a long time without moving. Just my .02, Happy riding!
But! The small gas engine lawnmowers turned the head facing forward in the 1980s to add in cooling when the mower was in forward motion. So in this situation the exposed head fins (like on a motorcycle) WILL ADD in a cooling via air from the bikes forward motion. But I would run a synthetic oil Royal Purple HPS 10/30 to reduce engine wear and increase hp/torque and reduce fuel consumption.
I have been trying to make up my mind. Thanks this was the exact comparison I needed. I'm going 4 strokes quieter, less smoky (neighbor-friendly)& 4-strokes last longer. I am a big guy, but speed is not an issue- not pedaling is LOL
With the chain tension, you can put a pin or bolt through the frame to keep it from moving or weld a flat steel on the bottom. Drill a hole to put your bottom bolt through it. Both will keep it in place.
you want him to break his neck popping wheelies out of control lol it needs a smaller rear sprocket not bigger that way you can get more top speed out of the bike even if the engine lugs a bit down low you can augment it with pedaling and then when the engine can take over you will go faster.
@@jessaphillips2846 Yes but it depends on the size of the front sprocket as well. Really be best if it we setup to change gears. Would be the best of both worlds. 🙂
With the proper stuff you can actually get the power to the right side of the bike and utilize the bike gears to give you good take off and good top end. I did this with a grubee 10g shift kit on a skyhawk gt2 frame. It's a bit costly but it is well worth it. Fyi if you plan on doing it yourself you will have to have more than just a basic set of sockets and screwdrivers. I also recommend the shimano 7 speed cassette mega range 14t-34t. It's a bad ass bike. If anyone wants to know I can post a link to my page with photos of said bike.
Sometimes the easiest fixes are brilliant at the sane time. I have a tendency to over think things sometimes, that piece of pvc pipe was great thinking i would have probably tried to relocate them and ended up with no brakes at all😂
You forgot to mention that you have to premix oil and gas in the 2 stroke, where in the 4 stroke you don't. A minor detail, but an inconvenience non-the-less. Great video.
in 4 stroke you have to change oil regularly so where is advantage? 2 stroke is so easy(speakin about good engines no chnese cheap toys) no manifold... in compare of weight and horse power will always win 2stroke...and smoke? If you use proper spark plug & set good ignition its no smoke...
You know you can get a double pull brake lever that pulls both brakes with one lever so you can have brakes on one side and clutch on the other. Worked out great for my 2 stroke kit. 37 is hauling ass on a bicycle! Mine went 28 on our little country road and scared the snot out of me!
My top speed on a road bike is 58mph. Was so fun and also terrifying at the same time. Especially when a mom tried to jump out in the middle of the road bc her kid was riding a quad 💀
I just have to say one more time how much I appreciate your videos. I honestly believe you could not do a better job you will be the first person I contribute to on patreon
I have used both 2 and 4 stroke. I honestly found the 2 strokes dont last all that long. They will last for a little while as long as you dont beat the heck out of them. The big problem I saw with the 2 stroke is that the oil does not easily get to the crank bearings and they are oil starved alot because of the design. The crank bearings are always the first to go. I've used a few of these 2 strokes and they have all failed the same way even when richening the oil mix. Plus they run a little too hot. The 4 stroke is a much better engine, but there is one BIG downfall. The gearboxes on those are total crap. All that is inside it is two sprockets and a very very small chain that stretches out and wears quickly and eventually keeps coming off the sprockets. (Feels like it keeps going out of gear) The gear boxes do not last long AT ALL!! The 4 stroke is the best and longest lasting engine from my experience, but if your gonna get one, get the belt drive kit for it!!!! They do make those kits and they are out there. Toss the crappy gear box it comes with, they are total garbage!! This is from someone whose had long time experience with both engines.👍
I'm waiting for my new 49cc 4 stroke to come in the mail and it comes with the belt drive, I have been searching for which drive is better, and you answered my question,thanks !!!
eBay is where I got it,it's shipping from new Jersey to Oregon UPS ground and still isn't here after 10 days already,it was in Illinois a couple of days ago, anyway check eBay out,but look for the belt drive gear box because some do come with the chain drive that you don't want, so just look for 49 cc 4 stroke bicycle engine kits.
@Ian Mangham i got mine from bicycle-engines .com it was 350 U.S. dollars for the whole kit. engine, belt drive transmission, fuel tank, throttle control, chain, wheel sprocket, engine mount, and a REALLY great set of install instructions.
Thank you very much for this, I was back and forth on getting one of these because my mechanical knowledge is..well..not good, in fact one of the reasons I want one is to learn more by installing and maintaining it. This will be a huge help and prevent me from being at the mercy of my motorhead friends for everything.
Now electric bike kit ? I got a second hand one only 250watts but its awesome having to hardly pedal at all and whizz by everyone in total silence. My no1 tip: don't use a cheap old bike, get a nice comfortable touring bike with hydraulic fork and spend a little more on tires, mine are Schwalbe Marathon totally worth it and very comfortable.
I got Schwalbe Big Ben on my ebike. Smoothest ride ever! I always wanted to test some Aliexpress/Bafang bike kit, but was always afraid to try! If you test an electric bike kit, please go with a pedal motor and not those crappy wheel motors
I watched a video a young kid done,, he used I think it was $139 cheap eBay electric bike kit. But he used three 22.2. volt batteries for a drone. For a total of 66.6 volt,,. On a 48 volt Hub motor,, it was powerful and had a extremely long range but mainly it could climb steep hills with no problem,,,. And a electric motor loves the extra current,,. I think the batteries were about$40 a piece,,. ??? Definitely the best bang for the buck power-wise speed-wise torque and super quiet,,,. I'm going to do one and add a two stroke gas motor,,,. That way I can go anywhere and be legal,,,. !!!
I think it was a 500-watt motor,,. From my research anything less is junk,,,. And pedal assist,,. And all those electric bikes are way too expensive,,. And replacing their batteries is to,, one of the biggest cost,,. Build your own I definitely will,,,,
Great video! About losing your mountain bike gears, I myself bought this same 4 stroke kit, and I installed in such a way that I could still use all front and rear gears. Instead of attaching the motor to the rear wheel, I bought a 52 tooth (I think it was 52 or maybe 54) sprocket and mounted it opposite to my front set of gears, i.e the left side of the bike. My design was a little bit lazy- I mounted the engine quite high to allow for everything to fit on the suspension design of my bike and the fuel tank is mounted on the handlebars XD I also didn't bother with attaching any pedals (welded on some foot pegs) as the 52 tooth gear lets the bike take off when in lowest gear. Actually, I think I just leave the back set of gears on the lowest ratio and use the front 3.
I put the two-stroke on it on my mountain bike it's a lot of fun and I love it I would like to try the four-stroke one also but any suggestions from you would be great I like your video I like all of your videos you're very intelligent human being I was an aircraft mechanic in the military for 15 years and I always enjoy learning new things thank you
Thank you for another fantastic video! I have learned so much from your videos, your intelligent, thoughtful and thorough testing and insight has influenced my decisions on many products over the years. Please keep up the great work and we can all learn together!
Don't tempt him... There are 125cc custom v8 kits out there - but they're *horribly* expensive. And I'd love to see a coppers face when that buzzed past his patrol car...
This is great. Haven't seen anyone mention this and while I typically prefer 4 stroke, with a bike like this would take the 2 stroke in case you dump the bike or want to put it in the back of a car or truck so you don't have flooding issues. Obviously adding a fuel shutoff would help with this.
The 4 stroke is way more quiet. I like it, the 2 stroke makes a whiney sound if it makes sense. The 4 stroke makes a "deeper" sound and its not annoying at all. Nice video!
Dumping the sprocket gave me a chuckle. I had a 21 speed mountain bike in college that I really only used about 4 speeds on. Always the biggest sprocket up front and the smallest few on the back. I tried to pull out of a bike lot one day with the biggest rear sprocket engaged and was confused by a loss of steering. Just moderate pressure on the pedals unintentionally brought the front wheel a couple inches off the ground. It was fun being young and strong.
Did you ever see way back in the beginning of bikes and in enters making powered bikes and early motor cycles one inventor came up with what I would call a motorbike with the motor built inside of the wheel. It's been probably twenty years ago that I saw the article and pictures and I cannot remember now which wheel that it was actually built into, but it appeared to be quite a piece of engineering and I always wished that I would have loved to see how well something that that would have operated! You did a very nice comparison of the two pointing out the advantages and disadvantages of each and with your fairly thorough explanation I'm sure you make a lot easier for a person wanting to go this route for some cheap transportation over walking everywhere to make their decision on which to purchase for their needs verses probably just a guess otherwise. I think a lot of people would choose according to cost but after hearing your assessment may choose otherwise. So another fine job by you again!
Great videos! I agree with you concerning the 2 stroke engines. My Grubbee 49cc 2 stroke only has a top safe speed of around 22mph, but I've put over 1000 miles on it over the last 2 years. Am impressed with it's durability-John in Texas
I swapped out a two-stroke for a four-stroke motor on my beach cruiser. The four-stroke with a 44 tooth sprocket does 37 MPH and can barely tell if it is running it is so quiet!. I love it but it is a dog! it burns clutch more than I prefer.
I'm sure you like you're top speed, which is an impressive speed, but I'm sure the clutch would be happier with a bit shorter gear ratio! I got a 56 tooth sprocket for my upcoming bike. That may be a good thing for you... or just pedal up to speed a bit more. Good luck
FYI sprockets just like the one in this video with more rectangular slots for the hardware; you can use carriage bolts because they have a square bottom underneath the dome cap. This allows for you to get a perfectly aligned sprocket every time!
going any fast speed on a 2 wheel vehicle seems to appear faster than what you're going, the thing that shook me to the core after taking my motorcyle well over 100mph on a deserted back road was, what if? a car pulled out? or if something else went wrong!? getting thrown from a 2 wheel vehicle is no fun! got dumped off my dirt bike many a time! WEAR A HELMET!!!
In 1981, my wife got me a mail order course in small engine repair- I went to a thrift store, and got a two stroke mower for $5. I haven't seen another two stroke mower since, but it was easy to get it running.
Thanks for sharing this! I have a 4 stroke on a Macargi beach cruiser bike. It has some ape hangers on it. Very comfy! Pulls my 220 lb carcass down the street at 32 mph. I had it built 7 years ago. I left it outside for a couple of North Dakota winters, so now it needs work. Before that, it ran like a charm, started on 1st or 2nd pull ALL the time. I ran it to and from work (5 miles total) everyday for a summer. Each week I cried as I put between 97 cents and a 1.16 in the gas tank. 25 miles for around a buck? I`ll take that! By the way, that was in Colorado at 6500 ft elevation to boot. The engine made pedaling on the hills easy. Thinking about building another one . . . . .
Ya these ND Winter's are brutal, Especially this last winter. We just got about 3 feet of snow, a few weeks ago here in Rugby ND. My Honda 450r is still half buried in snow lol.
I own the two stroke kit, and I want to stress the con of the clutch. It is heavy, sensitive, and starting that engine is horrible. Riding it with no motor help is nearly impossible. A neighbor of mine has the 4 stroke kit. It is his main vehicle, and he rides it to work every day. 3000 miles a year, and he does great on reliability. Don’t bother with the two stroke, save some extra money for the 4
@@Minecrafter-uh6qv I was thinking about running out of gas or having some problem with the gas motor, if you had to ride it you would have to hold the clutch in?
The best part of a 4 stroke for such a kit is the non-dependancy of a quality pipe. 2 stroke engines need a properly tuned pipe, and these chinese kits rarely have anything close to a decent pipe. No worries with a 4 stroke, a chunk of water pipe would be just as effective.
Squat251 Ah, another excellent point that I forgot to mention in MY comment! The “muffler” on the 2-stroke engines tend to collect oil from the exhaust smoke, and can eventually congest the flow enough to cause poor engine operation if not drained and cleaned when needed. Such a pain...
JETZcorp these will likely explode. Sure for a chainsaw that’s not a hard figure to hit (most stock 2 strokes of that size run over 12k rpm). But these are made of chinesium castings and you can often see holes right through thin sections of metal making them a bit of a bomb between your legs. The amount of power is far, far less than a 25cc grass trimmer (my grass trimmer bikes go much faster and climb up way more than these 2 stroke kits, much more power even stock). I’ve noticed the stock 2 stroke kit pipe is really crappy though, so just changing to litteral 90 degree pluming fitting then to a go-cart exhaust not only made it sound way cooler (same noise level, but instead of crap it sounded like a deeper dirt bike, actually sounded really nice), but top speed increased a little. Also the stock filter is really terrible, a short 1/4 mile on gravel and you’ll find small chunks of gravel in the carb... like the airbox holes are basically lined up for the wheel to throw rocks into it and that foam is so porous anything less than a pencil will go right through it, so I used a “sock technology filter” straight from my feet and solved that, you bet that got some comments for elegant filter of the year... Pros: cheap, starts easy (pedal 6 mph and pop the clutch, starts every time unless the coil or electrical box is fried which does happen), easy to install (30 minutes estimated, it’s only 4 engine bolts after all and it’s only the wheel that’s time consuming). Cons: weak as hell (my estimate is 1 HP), slow (25 mph roughly on my 24 inch wheels), guzzles fuel about 30% more than my real dirt bike doing 70 mph on gravel. Recommended? Yeah, they are a blast! Legal in Oklahoma and quite frankly my custom designed grass trimmer and chainsaw bikes are insanely labor intensive with lots of welding and customizing suspension forks (front wheel drive, excellent for street drifting and off-road fun!), so the price is not even on the same planet. The 2 stroke kit is good enough and if it’s stolen (like mine was for example), it’s not the end of the world and you can get another one for the cost of a single Benjamin! They definitely serve a purchase, but if performance is what you’re expecting go somewhere else (maybe go electric, my ebike practically does wheelies at take off, and it might if I weren’t in a full aero-tuck position, it’s 37.5 amps constant during acceleration measured with a meter at 58v and I’m upgrading it to 108v soon, like they have insane torque and you get 30 mph in like 2 seconds or less as your butt is sliding off the seat, haha!)
I love the smell of two stroke in the morning ... especially a methanol mix of the old mx bikes .... and the blue haze! Mind you, that 4 stroke kit is a much better option
Great shootout! 👍👍 As a small engine mechanic, in my opinion, there is no substitute for the 2-stroke. A little smoke doesn't bother me. The light weight, low cost, high power output, and ease of rebuilding or repairing keeps a smile on my face, whether it's a leaf blower, or my '74 Yamaha RD350 twin. 😎
@@ProjectFarm Thanks! I love that bike. I sold my Harley, and a built Yamaha Roadliner with 91 HP & 115 ft.lbs. of torque, and kept the RD. Fits my small stature perfectly, and is a ton of fun to ride! :)
+Smitty Your comments are those of an ill informed person without critical thinking skills. Rational people detest wholly unnecessary noise and smoke, so we must dismiss your nonsense.
Almost all af these advantages that the 4T has over the 2T can be fixed. 1. You can buy a pull start for the two stroke for a few bucks 2. Buy a boost bottle and/or an expansion chamber. Not only they eliminate the heavy smoke problem, but they also cease vibration and add horsepower. 3 and 4. Here you're right. 5. Buy a tuning carburator. It also adds horsepower. 6. See part 2. Also put some rubber, like an inner tube from a bicycle wheel, between the motor mount and the frame.
a boost bottle does nothing else but hold fuel for extra acceleration! period! it does NOT cause less smoke as smoke is from the oil in the gas, if the boost bottle can remove smoke it actually means that oil is removed which leads to engine wear and at the end a broken engine...! also it gives NO extra HP as it doesn't provide the engine with all time extra fuel, only at acceleration! and it removes no vibration at all, if anything it would give more vibrations due to the more power you claim it would give.. a two stroke engine has always been known for more power, but at a cost, about 40% of the fuel runs straight through the whole system not giving you any use of it and it is the reason for the muffler getting oiled up and the muffler wool getting soaked and then needing replacement wool... only power and the agressive acceleration is good, but not on a simple bike used for going to school or work, nobody wants to smell like a kid that have been dirt biking all day in the field... two stroke is good for racing and playing around, but 4 stroke is a winner everywhere else! i have driven all sorts of scooters, mopeds, bikes with two and four stroke engines since the 80's and two stroke is for fun and racing only! in that game the 4 stroke is like tampons, they belongs to pussy's...
For a comparison data point, I used to have a Honda NC-50 Express. This was a 2-stroke (oil injection, no mixing required) 49cc single speed motorcycle that looked just like a moped but without pedals ($325 new in 1978). It topped out about 28mph on level ground. Given a hill it would accelerate to about 35 mph and could sustain 32mph thereafter on level ground. It got about 175mpg and went 1,000 miles on a quart of oil, no visible exhaust. Used to find almost enough change laying in the curbs to fuel it (it stopped on a dime when I stopped FOR a dime).
Electric (Lithium): Worse initial cost Easier to install Range based on battery capacity and peddling. Gas can be a bit better as you could just fill up. Electric better for 10 miles or less as you can skip the gas station trip. Electricity cost $1 or less for a full charge. Less if your charger is energy efficient (mine is not). Speed: street legal ebikes limited to 20mph in the USA. Non street legal the sky is the limit. Noise: electric is 1/8 the noise of an electric drill (roughly). Almost silent. Ride feel: electric wins unless you like some vibration. I have had an E-bike for several years.
I have built a bunch of bikes over the years and first thing I always do is drill a few holes in the end of the exhaust pipe, (more air), the high performance 3 prong spark plug helps, I always change the 44 tooth sprocket to a 28 tooth. I personally like the dual pull brake lever if its a 2 stroke so there aren't extra levers. Oh and my favorite cheap Walmart bike to mount it on is 29" genisis mountain bike because it has disc brakes and a front shock and at high speed the 29inch bike is much more comfortable. I just recently tried the sprocket hub adapter and it is sweet. With those modifications every bike I have built goes over 40. If a tensioner is necessary the spring tensioner is a must
Ty for your great videos! After watching your video, I built a 2stroke motor bike for my kids. Although not easy, to get it started, needed to confirm spark with ngk plug, and rebuild carb jet, and clutch. Great content 👌
I have one of these 4 stroke motor kits and I've had it going for 812 miles and counting!! Very reliable if you change the oil every so often and install everything correctly. I straight piped mine and man does that open it up... It shoots flames too!! I picked up mine for 240$, and with my experience it helps spending the extra money. As for fuel efficiency I can get about 60 miles a tank, or 120 miles a gallon!! Pretty amazing... Great alternative for city travel, as most states require under 50cc to be classified as a bike. Anything over and you need to title it and put blinkers, headlight etc... (Note: these fuel tests by me were done with the stock muffler, not straight piped.)
Would love to see the torque differences between both engines as well. The speed test, as I could see, was made in a flat road. Would be great to see on a road going up and compare both of them.
this is cool , i had a very small 2 stroke car from Subaru in 1971. 2 clylinder it had a snowmobile engine.I also bought a 1967 Saab 96 with a 3 cyl. 2 stroke, it was an off road monster, both hill climbed. great milage on both.
Your build skills are quite impressive. Good job! I did not even know that these kits existed. Now I am very tempted to give it a go. Thanks for posting.
Much of the issue with the excessive smoke from the 2 stroke is the manufacturer suggestion to use a 20:1 oil ratio combined with the rich jetting in the stock carb. Get the right size jet for a 32:1 mix (usually a #65 main jet for a stock engine/exhaust)
That's a lot of power, I assume it is a ride-on mower, right? My mower has 5.5 hp, and that's already powerful for a push mower - altough I have seen some crazy push mowers with big block V8s sitting on them... xD
@@arthilas_ it's on my toro zero turn. You can pick them up on craidslist for a few hundred. I got my zero turn for $400 of my wife's stepfather who got it from a tenants father. She pissed her dad off 😁
I’m currently doing my 1st ever engine install on my tricycle , and I chose a engine (100cc 4 stroke) that let me keep my rear storage basket . I basically used what I knew and common sense to get where I am on the install because nobody does trike videos without an engine that takes the rear axleso do that I’d love to seebit
Important,!… bicycle tires are not made to go to that Speed, first bike I built like this kept getting flats.s’ tires wear out quickly’. Most important thing-at a Minimum is purchasing thorn proof tire tubes which are very thick and last much longer tires will still wear out quicker obviously because of the speed these vehicles go but you can always find heavier duty quality tires, at a minimum people should know about the thorn proof heavy duty tire tubes for these bikes. BIG DIFFERENCE’ Great job on the video as always’ thank you so much
Thank you all for suggesting such terrific video ideas, including this one! Here are a couple of links for bike engine kits, but highly recommend shopping around for a better price. Thanks again and best regards, Todd.
4 stroke bike engine kit: amzn.to/2YrDHZ5
2 stroke bike engine kit: amzn.to/3l7P5TG
R:
Thanks!!
How muchdo they cost?
Thomas Bostick 120 for the 2 stroke and 150 to 170 for the 4 stroke. The four stoke is worth it It is much more reliable. I have used it to ride to work after I sold my car.
Project Farm can you try to run the 4 stroke bike on vapors?
I’m 13, and my dad is a mechanic, I just kinda wanted to show him that I was interested in working on engines because I ride with him, but don’t know how to fix anything, that 2 stroke kit is coming for me in a couple days.
Fantastic! Glad to hear you are interested in mechanics. Learn all you can.
So how did that kit worked out for you ??
@@eugenecrabs3954 ha thanks
@@eugenecrabs3954 bro that reply could have been 1 sentence, no one asked for a list of mowers
good tip get a yz 80 fmf pipe
It’s a very rare thing for such a big YT channel to read and reply to most comments, I’d like to say thank you for taking the time and trouble to do so.
Thank you very much! I really enjoy the interaction. It's what makes TH-cam so much better than TV. Thanks again.
Not only that, PF knows what he's doing with these kits. I'm in a nanny-state of a country (Australia) where these things are illegal, but I like to ride a bicycle, so I've watched a few of these conversion kit videos. This one and the two-stroke one, despite being brief and not 'step-by-step' are still the most thorough and well thought out examples.
@@MattExzy as someone who lives in south australia (pussy state) even the 200w compliant 2 stroke kits are illegal, yet the cops dont pull me over when i whizz past them on my 2500w electric bike at 60kph (or when i out accelerate them at the lights)
👍🏼👍🏼👍🏼
Id like to take the time to say thank you for thanking him.........
The 2-stroke and the 4-stroke videos were both excellent, and presented with your customary precision, confidence, and gusto. Looking forward to your next video.
Thanks so much! Thanks for sharing.
Iyot
Lifelong biker here. Loved watching both these vids, shame these engines are illegal for road use in the UK. Top tip for the handlebar grips; when fitting new ones, use hairspray!! The solvent evaporates after half hour, and the gentle adhesive in it will keep the grips on there for life!!
Thanks for the feedback.
Or use ODI bolt-on handlebar grips. I started using those when they first came out for mountain bikes decades ago, and I will never go back to slide-on/cut-off handlebar grips. They're such a pain when you need to service the brake levers or shifters.
You all ought to change that. Storm Windsor Castle and Parliament and have your revolution! Liberty!!!
Not for life, especially in the rain or off roading/torquing on the grips often. Ive got a can of aquanet in my bike tool kit.
@@fixerupperer Yes, for life. Water doesn't get in there, even when commuting over 60 miles (at high speed) in heavy rain (for years).
He has convinced me to buy both a two-stroke and a four stroke this man deserves way more than he has
Agree. I have no intention of buying one of these kits (illegal where I live) but I like watching his videos.
If every DIY video on TH-cam was this detailed (for beginners and intermediate hobbyists) I would never have to do any research lol. Thanks again, Project Farm!
Thank you very much!
Check out ChrisFix
I WONDER IF EITHER OF THESE BIKES COULD BE USED BY A 326 LB. MAN ? AND ALSO, THIS MAN WOULD BE GOING UP HILLS SOMETIME?
“Don’t use gorilla tape, I want to get this off...”. That is the most accurate description of gorilla tape I’ve heard. That tape is like epoxy. I’ve used to to install a license plate temporarily, and when I wanted to install it with screws, I decided just to keep the gorilla tape it was so clearly adhered to the plastic bumper. It was like that for well over a year. Great video
Thanks!
You need to heat Gorilla tape with a heat gun or hair dryer to remove it.
I ised it for some quick and dirty bidy work on a black car. It didn't look too bad! And the plastic pieces I taped stayed together until sombody bought the car from me. (I showed them the repair).
Man if you think Gorilla Tape is good, buy yourself a roll of T-REX Tape. Gorilla tape is epoxy, T-REX tape is the tape version of welding. The madlad @ProjectFarm pulled a small tractor with one loop of the stuff.
Really? I must be doing something wrong because I've been pretty unimpressed with gorilla tape
But the 2stroke is the "Smell" of my youth. You're new to me, I like the detail you give that so many others don't, so I subscribe.
I love that 2-stroke smell, we all ran Castrol 2-stroke oil in our dirt bikes growing up, it's a heavenly smell.
Just run a 2 stroke mix in your 4 stroke engine and it will produce the same effect!
@@applepoop10 I tried that on my 110cc moped. It didn't work. What could be wrong? 🤔
@@applepoop10 yep intentionally glaze your bores make your 4 stroke speed into that of a granny crawling, brilliant
Same here, I run Castrol 927 in my KX500 and my sons KDX200
Next diesel bike build😂
Nice! It'll definitely need a big coffee can exhaust tip too!
@@ProjectFarm better yet lets do a biodiesel bike
boer brabant then after that a 2 stroke diesel bike
@@caidencrawford9913 Only if it's a Detroit Diesel 2-stroke!
12 valve Cummins swapped mountain bike...
next video...
“twin turbo 6.5 litre V8 bike kit”
Nice!
Nah fam v8 loves superchargers more xd
that_cat ahahahah
squeeze a Bugatti quad-turbo W-16 mill under the seat and go set some land speed records!
Mr. Long Legs ls swapped bike 😂
Another 4 stroke advantage: no mixing fuel and oil
Great point!
cool name dude im doing a build that might turn into a giveaway check it out
That's one of the reasons I hadn't built a gas-bike. Just from that alone.
Yeah, that's really hard work...
But that is the advantage. Gas n go. One less part to maintain.
I simply love the two stroke oil smell. But the centrifugal clutch is a game changer for the 4 stroke
Especially if you race oil!! Ha ha.
That shit causes severe neurological diseases.
@@fredrhodes540 Blendzall Green label is the best 2 stroke racing oil! And it smell like Candy!🤣
I’m having flashback to my friends and building out our mini bikes. “Master link keeper” started to give me flashbacks.
Love your videos!!! Always fantastic
That is awesome!
The 4 stroke Engine performance can be increased very easily with just a bit of carburetor and exhaust modifications. I opened up the fuel & air circuits and added a better breathing air filter . Modified the exhaust pipe as well. It gained 8 mph @ WOT and has much better acceleration and power throughout the rpm range. I would estimate it gained at least a single HP . But probably not much more than that. It definitely woke up because a 25% increase in Top speed is significant irregardless of engine displacement. It had a previous Top Speed of 36 MPH and now consistantly runs 44-45 mph
Impressive!
@@ProjectFarm might be if it stays together . I may have sped up not only the bicycle but the engines day with death. And maybe Ive increased its life span by making it more efficient. One will never know. But the intake charge running richer has made it run a bit cooler and the speed increase helps with the cooling as well. So that definitely adds to efficiency and efficiency adds to higher average power production throughout the RPM range . Time will tell. But It is pretty impressive to me that it will now take off on engine only power carring someone my size ( 6' 2" and 221 lbs . Its no dragster but does indeed pull off with a increasing speed and RPMs without bog or hesitation . It definitely wouldnt originally. Im sure its pretty hard on it to do so . But it does do it.
Holy moly...anything over 40mph on a bike is dangerous. My top speed down a local mountain road is about 47mph on a mtn bike and that was nuts... Honestly.i'd stick right around 30mph if you don't want to die... and keep the reserve speed for when a band of backwood bandits start chasing you.
@@mrinternet5562 I drag race a Top Fuel Harley Davidson and have been drag racing bikes for 26 years. I think I will be ok
@@GorillaCookies Except you're talking about motorcycles. Bicycles are not meant for all that weight, forces and vibrations at those speeds. He is very smart for sticking it in the 30mph and if that.
You compare the two only shows that you're most in danger, because ignorance is a killer.
Thanks for another great video. I watched both the 2 and 4 stroke videos and enjoyed them. Riding a bike at 37 mph is pretty brave. This has me thinking about building one for myself.
You are welcome! Thanks for sharing.
I love your show, I've been with the Home Depot for almost 22 years now. I recommend your show whenever someone has questions on products you've tested. They make a 12v turbo/super charger for around $100. It might be fun to hook that up to your 4 stroke bike motor to see what it does.
Thanks! Thanks for the suggestion.
It would do nothing. Its an electric fan and nothing else
Nighthawk in light did a show where he built a wood gasifier for fuel. I've been using 2 stroke kits for a few years. I think I'm gonna build with the 4 stroke kit next.
hmmmm
lying down and watch this with a cup of hot coffee, wondering this will be my next project during this covid19 lockdown..
Thanks for watching!
Same 😂
I did one, it’s honestly a great way to pass the time. Putting it together is one thing, tuning and modding it once you find out the potential they have is another. Lotta fun you can have
Just bought a bike on craigslist for $50 and this kit on amazon, thanks quarantine gonna have a fun weekend
Same!!
Had the same trouble with the filter box not fitting in the frame for mine. The kit I used came with much better instructions, but I would have traded those for your all metal clutch. Mine has a plastic outer cover that was cracked on arrival. I've never seen cheaper cardboard than the box the kit arrived in.
Thank you
No, thank you
Ooh it's NightHawkinLight, I have watched him for years
I was like... "oh NightHawkinLight... he hasn't posted in forever, lemme see what's up.." I was unsubscribed.. I didn't do that, and that's not the first time that has happened, it happened with VSauce3 recently as well....
Why is TH-cam unsubbing me from random channels?!
Has anyone else had this issue?
If the airbox don't fit, build a small ram-air intake using a length of vacuum hose and reposition the air box/ filter. That should take care of your problem.
Such a great idea, let's call it a motorbike!
Thank you very much! With warm weather finally arriving, I've been riding it 3-4 times each week. Still running great
*moped* MOtorized PEDal bike
How fast does it go?
@@shakoor3218 37 mph
Then you would have to have a licence.
Love the zip tie spacer trick!
Also I appreciate how you keep things fun, scientific, and honest.
Thanks!
I like the 4 stroke because they are quieter in my opinion and riding in the neighborhood is less obnoxious
Thank you
Plus you don't have to pre-mix the gasoline..just change the oil on a regular basis (I don't think these little motors have filters and just like a Honda Rebel 250, gotta change the oil often to get rid of any gunk that might build up)
electric. dead quiet and 5% of the parts!
@@thomasjaszewski64 And 5 times the price.
@@ChefofWar33 Electric has much higher MPGe (around 900 MPGe) ,much less indirect harmful CO2 emissions per distance traveled,you can pedal along bionically with the motor but doesn't have the advantage of easy refilling of fuel and nearly unlimited range as the battery takes hours to charge up.
If you want exercise plus ease of going up hills electric is the way to go. I've gone 46 miles on an electric bike in range.
If you want unlimited range with easy gas refills at a gas station an I.C.E. bike is better.
Also it depends on state laws too.
Many states won't allow I.C.E. bicycles on streets,roads or highways.
In my particular state of Washington I.C.E. bicycles are considered unlawful non licensable motor vehicles.
Considering the amazing MPG's you can get on a 4 cycle I.C.E. bicycle engine perhaps 200 MPG it would make sense to have them made lawful to combat anthropogenic CO2 emissions (Climate Change,Ocean acidification,Sea rise etc.) by having people ride these rather than inefficient heavy motor vehicles (passenger cars) which have a vastly lower MPG rating. Electric bikes serve one purpose and I.C.E. bikes serve usually a different one.
They can compliment each other too.
Build a forced air intake for the 4 stroke (Turbo or Super). Completely ridiculous for such a small engine but I mean it's an engine on a bicycle already so why not try going a little silly....
Great video idea!
DO IT
DO IT
Just go with a nitrous oxide set up. There are kits out there already that could be used.
Fun idea, but from my research, very difficult. Most single cylinders can't provide a steady enough exhaust stream for a turbo, need a lot of RPM. Takes a lot of knowledge with carb sizing, placement, tuning and ignition timing.
For those metric guys like me top speed is 56 km/h
Thank you!
@@ProjectFarm 1.2 kw aka 1.6 hp ? Need a turbo on that thing :D
Thx mate
56km/hr in non retard units.
Thx
I just wanted to say that I had one of the 2 stroke kits and I used this as my only transportation for about a year ( then it got stolen) and there is most definitely a lot of maintenance involved with the 2 stroke and quite a bit of a learning curve with doing that. The most important thing I found was making sure the chain tensioner was properly aligned and tightened. I had a chain break and that was no fun at all. Also having good tires and thick tubes is a must. Lastly I would never recommend buying one of these kits for a young child to ride, the bike is fun to ride and all but just not engineered for those kinds of speeds. I'm a grown man and it took all of my attention not to get killed on mine when riding around in Las Vegas, probably better off that it got stolen because it was just a matter of time.
Thanks for sharing!
My 2 stroke 125 needs like no maintenance compared to a 4 stroke. I dont know what your talking about .you must not have a good engine or sounds like your talking about maintenance of the bike more than the engine
@@theonewhoknows2 Yeah usually a 2-stroke only need the oil mixed in and a good carb tune and away it goes. The 4-stroke especially cheaper ones will have to always be valve adjusted in order to maintain good efficiency and reliability. Plus it's more moving parts that wear out eventually, the 2-stroke is the king of simplicity.
@@Tomazack yea exactly, my cr125 has only had a couple problems like a clogged jet , besides that it always runs and idles no problem. It likes the crappy autolite spark plugs or ngk as once i had a iridium spark plug and put it in and it burnt out the first time i started it with it.Most reliable engine i have ever come across
I agree with you about the safety concerns. I was thinking about the fun and efficiency, etc. but after my own experience riding human powered bikes on wet downhill roads, I felt myself struggling to keep control. After seven miles of getting soaked by the rain, then realizing that my front brakes had come loose, your message reminded me of the potential dangers of a powered bike. Unlike motorcycles, which can also be deadly, bikes haven't enough weight to aid in control during high winds and bad weather. Too risky for me.
Nice to finally find a video for the 4 stoke that is in English and he explains it
Man, I have throughly enjoyed your videos since stumbling onto them a few weeks ago. Great content, no flashy "youtube" voice, and you never take endorsements. Perfect channel! Proud subscriber!
Thank you for the kind words!
Welcome 2 tha team
In the 1940's teenage boys would use Maytag washing machine engines to this modification to bicycles.
Very interesting! Thanks for commenting on this
They used to be gaspowerd?
@@kevinerhartjr.273Yes, they used to have gas powered Maytag washers... You can probably look up the motor on yt atleast....
Weren't those hit-and-miss
engines?
בס״ד
@@KelikakuCoutin I am not for sure... Could have been...
aaah this guy is such a joy to listen to. Never trying to be funny, none of that 'personality' and 'brand' building lots of other YT channels engage in. This man uses verbal communication exclusively to convey information and I love it.
Thanks!
One big advantage that the 4 stroke has over the 2 stroke is that you can literally pull up to a gas station with the 4 stroke fuel up straight to the tank. Where as the 2 stroke you will need a little gas tank of premix with you at all times for long trips etc... Really Enjoyed this video Project Farm!
Thanks!
Put a turbo on the 4stroke bike kit.
Thank you for the video idea!
No problem.
Or go one step further and install a Jackshaft and use the existing rear wheel mountain bike sprockets as a form of gears to get some good speed from your bike.
Or an expansion chamber on the two stroke.
@@daemonwhitebeard6590 Lool imagine the top speed, you'd definitely need to upgrade your brakes
I had never considered a gas powered bike before but that looks like a lot of fun. I think I prefer the four stroke over the two. If I can use a kit like that on the bikes with the large tires I think I would be rolling!
Thanks for sharing.
2024 Phatmoto All terrain bikes!!!!!
Thanks for posting this...
I've been wanting to build one myself for some time but was a little intimidated by the complexity of the job, having never done a project like this before...
But, the easy, straight forward way you did it have me the confidence to take the plunge a give it a go.
I think...lol👍😃
You are welcome! Thanks for sharing.
We learn from mistakes, and practice makes perfect.
So how did it go?
About 40 years ago I put a chainsaw engine on an old 20" 5 speed. I use to fly all over the place, not knowing that was irritating people.
I was riding it down near the beach once, and was stopped by a cop that I had a few run-ins with back then.
The asshole was happy he got the chance to give me quite a few tickets that forced me to be unable to get a license till I was 21.
Driving a motorbike without an operators license, no registration, no lights or required safety equipment crap.
I remember standing there in court and instead of the judge saying something nice like " you built that thing yourself" ?
No, instead he said " you seem to do what you damn well please don't you."
Then told me I better be careful how I answer.
I never did get the bike back.
But boy did I have a hate for cops after that.
And that wore off too.
30 years later.
That would have been a very frustrating experience!
I live in Southern Arizona. We can ride a bike legally as long as it is under 50cc, has a mirror, headlight, tail light, and foot pegs if you carry a passenger (pegs pointless on a motorized bicycle). Eye protection is required at all times, helmets by law for anyone under 18 years of age. What make them a "motorcycle" is fixed pegs and you have to license, register, and insure it. You also need a motorcycle endorsement on your license. For the most part, the cops in my hometown leave bike riders alone unless one of us does something stupid like running stop signs, excessive speed or something similar. I've had Pima County Sheriffs follow me but none made a move to light me up.
yeah ive had a similar experience, i got dinged 2 grand worth of fines when i was younger on an engine bike, just part of the game, some cops are dicks, they will end up shot eventually tho karma works itself out
IT IZME_ motor assisted bicycle street legal 48 states in Tennessee only requires valid license and helmet no motorcycle endorsement
.....i have the same story as you, lol!
I see China makes electric conversion kits for bikes, it would be great to compare their power, range, and ease of assembly. You have one of the best channels on TH-cam, look forward to the next project as always.
Thanks so much! Thanks for the video idea.
Some of my favorite videos are the ones where you make something run from nothing, and then test that! Makes me do a happy dance..
Thanks for the feedback.
l have never tried the 4 stroke kits but have on the 2 stroke, the build quality on the 2 stroke is real cheap with lots of failures, plus most states limit you to under 50 cc so they are not legal if they wanted to bust your balls, , that 4 stroke kit supprised me on its top speed, one question l was thinking how did they do when pulling a hill?, thanks again for making great videos, you are at the top for me,
Hi Mustie1! Great point on the 2 stroke kits. This 4 stoke kit seems to have a very good engine on it, but I'm not sure how the clutch will hold up. The 2 stroke did much better on the hills, but the 4 stroke would do a terrific job with a larger back sprocket. I really enjoy your videos and congratulations on 200K subscribers!
Hi, Darren, I watch all your videos too.
Hi mustie1 I’m a big fan
2 strokes are only if you are a BO$$!!
ez to fix though, just gotta give it that, lots of cheap parts to upgrade them with too!
The 4-stroke engine produces more torque and has a wider powerband, even if the _peak_ horsepower is lower than the 2-stroke engine, because the 4-stroke engine has valves to keep fresh air and fuel from leaking out through the exhaust at low RPM. Also, the 4-stroke is less annoying to listen to at full-throttle for long periods of time.
Great point. Thank you
@@ProjectFarm: On a related note, this is why 2-stroke snowmobile engines have exhaust valves, unlike most 2-stroke engines -- to widen the powerband by preventing fresh air and fuel from leaking out through the exhaust at low RPM. If you've ever tried to drive through snow, you know you can't afford to have a lack of low-RPM torque. I wonder if someone offers a 2-stroke valved engine that's small enough to attach to a bicycle?
@@deusexaethera
That's not how 2stroke exhaust "valves" work. The piece you are referring too is called a power valve. All it does is reduce the overall surface area of the exhaust port at low RPM. It does not eliminate air leakage or movement, nor is it intended to.
@@turbolq4: It seems you are correct. I could've sworn I saw a schematic of a 2-stroke engine with a proper pushrod-actuated poppet valve for the exhaust once upon a time, but I can't find it now. Maybe it only worked well on paper and was abandoned, I dunno.
You may be thinking of the Detroit Diesel design from the mid-70s. Used a top end set of valves, a blower, and a piston system that operated as the intake valve exclusively.
When the piston goes down on that system, it opens the overhead valves, pushes all the exhaust gasses out via the blower, then closes the valves and pre-pressurizes the cylinder. As the cylinder approaches top dead center, the fuel is injected, and auto-ignites.
@@deusexaethera
One of the best youtube channels, you deserve way more exposure.
Thank you very much!
I agree
6:40 An additional safety move would be to drill through the tensioner bracket and into the bike's frame to install a lock bolt to keep the tensioner from rotating into the spokes if a tensioner is needed.
Thanks for sharing.
That is a fantastic hack and one that will allow you to get finished quicker instead of having to break the chain.
In my experience it doesn't move at all. Granted, my frame tubes are not round, they're oval, but yeah
Good idea
Or you can use some rubber and tighten the bolts
i'm probably going to end up with a 2 and 4 stroke and an electric....i don't need them just want to build them! lol
Nice to have all 3!
Of course I'm going to ride them like a rented mule
I’m planning on doing a hybrid with a 212cc and a 1000w front hub, having to run the hub off the engines power and a capacitor to the battery lol
@@AdrianGtz that would be a cool prius bike
That's what I do, too.
7:08 Removing that heat shield is the opposite of what you want... the motor has a built in fan, and that shroud is what keeps the air in contact with the cylinder cooling fins... now, the air blows out of the fan, and just goes wherever instead around the cylinder like it's supposed to...
Great point. Thank you
Exactly! I was going to make the same comment - keep the heat shield... :)
That little honda clone engine was designed for stationary work, running a generator for example. Taking the heat shield off shouldnt hurt anything as long as you dont let it sit for a long time without moving. Just my .02, Happy riding!
But! The small gas engine lawnmowers turned the head facing forward in the 1980s to add in cooling when the mower was in forward motion. So in this situation the exposed head fins (like on a motorcycle) WILL ADD in a cooling via air from the bikes forward motion. But I would run a synthetic oil Royal Purple HPS 10/30 to reduce engine wear and increase hp/torque and reduce fuel consumption.
I like how you said downside is replacing 3 front sprockets with one. No stress you got a motor!
I have been trying to make up my mind. Thanks this was the exact comparison I needed. I'm going 4 strokes quieter, less smoky (neighbor-friendly)& 4-strokes last longer.
I am a big guy, but speed is not an issue- not pedaling is LOL
With the chain tension, you can put a pin or bolt through the frame to keep it from moving or weld a flat steel on the bottom. Drill a hole to put your bottom bolt through it. Both will keep it in place.
Thanks for the feedback.
Next video, 4 Stroke with shaved heads bigger valve's, new racing carburetor and race fuel with a bigger wheel sprocket. 🙂
Great video idea!
you want him to break his neck popping wheelies out of control lol it needs a smaller rear sprocket not bigger that way you can get more top speed out of the bike even if the engine lugs a bit down low you can augment it with pedaling and then when the engine can take over you will go faster.
@@jessaphillips2846 Yes but it depends on the size of the front sprocket as well.
Really be best if it we setup to change gears. Would be the best of both worlds. 🙂
Cheap electric kit will smoke these stink pots. Yawn. Thanks for the great video!
With the proper stuff you can actually get the power to the right side of the bike and utilize the bike gears to give you good take off and good top end. I did this with a grubee 10g shift kit on a skyhawk gt2 frame. It's a bit costly but it is well worth it. Fyi if you plan on doing it yourself you will have to have more than just a basic set of sockets and screwdrivers. I also recommend the shimano 7 speed cassette mega range 14t-34t. It's a bad ass bike. If anyone wants to know I can post a link to my page with photos of said bike.
Sometimes the easiest fixes are brilliant at the sane time. I have a tendency to over think things sometimes, that piece of pvc pipe was great thinking i would have probably tried to relocate them and ended up with no brakes at all😂
You forgot to mention that you have to premix oil and gas in the 2 stroke, where in the 4 stroke you don't. A minor detail, but an inconvenience non-the-less. Great video.
Great point! I should have mentioned that! Thank you
it is not minor if you forget to mix it :D
in 4 stroke you have to change oil regularly so where is advantage? 2 stroke is so easy(speakin about good engines no chnese cheap toys) no manifold... in compare of weight and horse power will always win 2stroke...and smoke? If you use proper spark plug & set good ignition its no smoke...
You know you can get a double pull brake lever that pulls both brakes with one lever so you can have brakes on one side and clutch on the other. Worked out great for my 2 stroke kit. 37 is hauling ass on a bicycle! Mine went 28 on our little country road and scared the snot out of me!
My top speed on a road bike is 58mph. Was so fun and also terrifying at the same time. Especially when a mom tried to jump out in the middle of the road bc her kid was riding a quad 💀
I feel like I’m going to die going 25mph on a bicycle but I can’t imagine going 37 mph
Thanks for sharing.
i had my engine blow at 40
@@connorray9801 yikes, did your rear wheel lock-up?
I've gone 20mph on pedalling
@@Agavegaming yep, i saved it though
I just have to say one more time how much I appreciate your videos. I honestly believe you could not do a better job you will be the first person I contribute to on patreon
Thank you so much 😊
I have used both 2 and 4 stroke. I honestly found the 2 strokes dont last all that long. They will last for a little while as long as you dont beat the heck out of them. The big problem I saw with the 2 stroke is that the oil does not easily get to the crank bearings and they are oil starved alot because of the design. The crank bearings are always the first to go. I've used a few of these 2 strokes and they have all failed the same way even when richening the oil mix. Plus they run a little too hot.
The 4 stroke is a much better engine, but there is one BIG downfall. The gearboxes on those are total crap. All that is inside it is two sprockets and a very very small chain that stretches out and wears quickly and eventually keeps coming off the sprockets. (Feels like it keeps going out of gear) The gear boxes do not last long AT ALL!!
The 4 stroke is the best and longest lasting engine from my experience, but if your gonna get one, get the belt drive kit for it!!!! They do make those kits and they are out there. Toss the crappy gear box it comes with, they are total garbage!!
This is from someone whose had long time experience with both engines.👍
Thank you
I'm waiting for my new 49cc 4 stroke to come in the mail and it comes with the belt drive, I have been searching for which drive is better, and you answered my question,thanks !!!
eBay is where I got it,it's shipping from new Jersey to Oregon UPS ground and still isn't here after 10 days already,it was in Illinois a couple of days ago, anyway check eBay out,but look for the belt drive gear box because some do come with the chain drive that you don't want, so just look for 49 cc 4 stroke bicycle engine kits.
@@billaugustin7012 No problem 👍
@Ian Mangham i got mine from bicycle-engines .com it was 350 U.S. dollars for the whole kit. engine, belt drive transmission, fuel tank, throttle control, chain, wheel sprocket,
engine mount, and a REALLY great set of install instructions.
Thank you very much for this, I was back and forth on getting one of these because my mechanical knowledge is..well..not good, in fact one of the reasons I want one is to learn more by installing and maintaining it. This will be a huge help and prevent me from being at the mercy of my motorhead friends for everything.
You are welcome! Thanks for sharing.
6:41 "were gonna modi-fry..." lol
gotta modifry the true stroke engine
Lmao
@@kiyoponnn True smoke engine.
@kay van comma after can't
@kay van lol, just adding a little humor to your spot on post, no disrespect intended.
I myself had to read it twice because the lack of grammar.
Now electric bike kit ?
I got a second hand one only 250watts but its awesome having to hardly pedal at all and whizz by everyone in total silence.
My no1 tip: don't use a cheap old bike, get a nice comfortable touring bike with hydraulic fork and spend a little more on tires, mine are Schwalbe Marathon totally worth it and very comfortable.
Great video idea!
@@ProjectFarm Yeah, adding an electric bike kit and comparing it to the 2 & 4 stroke would be great.
I got Schwalbe Big Ben on my ebike. Smoothest ride ever!
I always wanted to test some Aliexpress/Bafang bike kit, but was always afraid to try!
If you test an electric bike kit, please go with a pedal motor and not those crappy wheel motors
I watched a video a young kid done,, he used I think it was $139 cheap eBay electric bike kit. But he used three 22.2. volt batteries for a drone. For a total of 66.6 volt,,. On a 48 volt Hub motor,, it was powerful and had a extremely long range but mainly it could climb steep hills with no problem,,,. And a electric motor loves the extra current,,. I think the batteries were about$40 a piece,,. ??? Definitely the best bang for the buck power-wise speed-wise torque and super quiet,,,. I'm going to do one and add a two stroke gas motor,,,. That way I can go anywhere and be legal,,,. !!!
I think it was a 500-watt motor,,. From my research anything less is junk,,,. And pedal assist,,. And all those electric bikes are way too expensive,,. And replacing their batteries is to,, one of the biggest cost,,. Build your own I definitely will,,,,
Great video! About losing your mountain bike gears, I myself bought this same 4 stroke kit, and I installed in such a way that I could still use all front and rear gears. Instead of attaching the motor to the rear wheel, I bought a 52 tooth (I think it was 52 or maybe 54) sprocket and mounted it opposite to my front set of gears, i.e the left side of the bike. My design was a little bit lazy- I mounted the engine quite high to allow for everything to fit on the suspension design of my bike and the fuel tank is mounted on the handlebars XD I also didn't bother with attaching any pedals (welded on some foot pegs) as the 52 tooth gear lets the bike take off when in lowest gear. Actually, I think I just leave the back set of gears on the lowest ratio and use the front 3.
Great tip on the way you installed the kit! Thank you!
I put the two-stroke on it on my mountain bike it's a lot of fun and I love it I would like to try the four-stroke one also but any suggestions from you would be great I like your video I like all of your videos you're very intelligent human being I was an aircraft mechanic in the military for 15 years and I always enjoy learning new things thank you
are they a lot of maintenance? cause i’m just trying to build one and not have to work on it all the time
Go with a staton friction drive and a Honda gx50nts3 you will not be disappointed
Nice kit! Clean install. :-)
Thank you very much! You've got a GREAT channel. Thanks for all of the videos!
Thank you for another fantastic video! I have learned so much from your videos, your intelligent, thoughtful and thorough testing and insight has influenced my decisions on many products over the years. Please keep up the great work and we can all learn together!
Thank you for the feedback!!
I'm waiting for the V8 bike conversion 😃
lol. That would be impressive!
Seeing how small the 4-stroke is, i think they can do V8 too lol...
Same,but then again the power would warp the cheap aluminum frame
It will pull out the spokes first a guess...
Don't tempt him... There are 125cc custom v8 kits out there - but they're *horribly* expensive. And I'd love to see a coppers face when that buzzed past his patrol car...
This is great. Haven't seen anyone mention this and while I typically prefer 4 stroke, with a bike like this would take the 2 stroke in case you dump the bike or want to put it in the back of a car or truck so you don't have flooding issues. Obviously adding a fuel shutoff would help with this.
Thanks! Thanks for the feedback.
The 4 stroke is way more quiet. I like it, the 2 stroke makes a whiney sound if it makes sense. The 4 stroke makes a "deeper" sound and its not annoying at all. Nice video!
Thank you!
The two stroke sounds like a chicken chaser, the four stroke sounds much better
Two stroke reminds me exactly of a chainsaw. If you dream of riding a chainsaw it seems like a good choice.
Dumping the sprocket gave me a chuckle. I had a 21 speed mountain bike in college that I really only used about 4 speeds on. Always the biggest sprocket up front and the smallest few on the back. I tried to pull out of a bike lot one day with the biggest rear sprocket engaged and was confused by a loss of steering. Just moderate pressure on the pedals unintentionally brought the front wheel a couple inches off the ground. It was fun being young and strong.
Thank you
If you lift the front wheel in the highest gear , it make's you stronger than Eddy Merckx
Did you ever see way back in the beginning of bikes and in enters making powered bikes and early motor cycles one inventor came up with what I would call a motorbike with the motor built inside of the wheel. It's been probably twenty years ago that I saw the article and pictures and I cannot remember now which wheel that it was actually built into, but it appeared to be quite a piece of engineering and I always wished that I would have loved to see how well something that that would have operated!
You did a very nice comparison of the two pointing out the advantages and disadvantages of each and with your fairly thorough explanation I'm sure you make a lot easier for a person wanting to go this route for some cheap transportation over walking everywhere to make their decision on which to purchase for their needs verses probably just a guess otherwise. I think a lot of people would choose according to cost but after hearing your assessment may choose otherwise. So another fine job by you again!
Thank you very much!
Great videos! I agree with you concerning the 2 stroke engines. My Grubbee 49cc 2 stroke only has a top safe speed of around 22mph, but I've put over 1000 miles on it over the last 2 years. Am impressed with it's durability-John in Texas
Thanks!
I swapped out a two-stroke for a four-stroke motor on my beach cruiser. The four-stroke with a 44 tooth sprocket does 37 MPH and can barely tell if it is running it is so quiet!. I love it but it is a dog! it burns clutch more than I prefer.
Very nice! Thank you
Where can I buy a 4 stroke engine like that
Where did you order the 4 stroke and how much was it
I'm sure you like you're top speed, which is an impressive speed, but I'm sure the clutch would be happier with a bit shorter gear ratio! I got a 56 tooth sprocket for my upcoming bike. That may be a good thing for you... or just pedal up to speed a bit more. Good luck
My electric does the same speed, and doesn't kill you with fumes. Guess you don't carry any kids in that, eh?
FYI sprockets just like the one in this video with more rectangular slots for the hardware; you can use carriage bolts because they have a square bottom underneath the dome cap. This allows for you to get a perfectly aligned sprocket every time!
Thanks for the feedback.
Nearly 40 MPH on a bicycle! That is scary!! Thanks for the video. Always love watching. Your content is fantastic!
Thank you!
going any fast speed on a 2 wheel vehicle seems to appear faster than what you're going, the thing that shook me to the core after taking my motorcyle well over 100mph on a deserted back road was, what if? a car pulled out? or if something else went wrong!? getting thrown from a 2 wheel vehicle is no fun! got dumped off my dirt bike many a time! WEAR A HELMET!!!
Try pedaling down a hill on a BMX and snapping a chain at 45+ mph...
In 1981, my wife got me a mail order course in small engine repair- I went to a thrift store, and got a two stroke mower for $5. I haven't seen another two stroke mower since, but it was easy to get it running.
Idk much about mechanics but enjoyed watching this natural genius at work!
Glad you enjoyed it! Thanks for watching.
I am impressed you are a jack of all trades, each video brings out a new skill. Great job.
Thank you!
2 minutes in with 30 likes, your channel is doing well!
Thank you!
an hour in, 616 likes.. doing awesome!
Thanks for sharing this! I have a 4 stroke on a Macargi beach cruiser bike. It has some ape hangers on it. Very comfy! Pulls my 220 lb carcass down the street at 32 mph. I had it built 7 years ago. I left it outside for a couple of North Dakota winters, so now it needs work. Before that, it ran like a charm, started on 1st or 2nd pull ALL the time. I ran it to and from work (5 miles total) everyday for a summer. Each week I cried as I put between 97 cents and a 1.16 in the gas tank. 25 miles for around a buck? I`ll take that! By the way, that was in Colorado at 6500 ft elevation to boot. The engine made pedaling on the hills easy. Thinking about building another one . . . . .
You are welcome! Thanks for sharing.
Ya these ND Winter's are brutal, Especially this last winter. We just got about 3 feet of snow, a few weeks ago here in Rugby ND. My Honda 450r is still half buried in snow lol.
"carcass"...thank you for the belly laugh!
@@boddberlstein2758 Ha, ha! You're welcome!
Duct tape over the bolts to hold them in place - GENIUS!!!!!
That and compressed air to remove grips - GENIUS!!!!!
I own the two stroke kit, and I want to stress the con of the clutch. It is heavy, sensitive, and starting that engine is horrible. Riding it with no motor help is nearly impossible. A neighbor of mine has the 4 stroke kit. It is his main vehicle, and he rides it to work every day. 3000 miles a year, and he does great on reliability. Don’t bother with the two stroke, save some extra money for the 4
Thank you for this information.
heavy? no, sensitive? possibly, starting? , only if you try to start it and not pull the clutch.
Do you have to hold the clutch in while pedaling? If so that would be a giant pain IMO.
CCW1911 you only peddle when starting the bike
@@Minecrafter-uh6qv I was thinking about running out of gas or having some problem with the gas motor, if you had to ride it you would have to hold the clutch in?
This was great, I didn't know these engine conversions even existed! Thanks for making the video!
They are a lot of fun! Thank you
I know this is an older video but I really liked it, I enjoyed how you compared the two and the build for the 4-stroke was very helpful.
Thanks! Glad to hear!
The best part of a 4 stroke for such a kit is the non-dependancy of a quality pipe. 2 stroke engines need a properly tuned pipe, and these chinese kits rarely have anything close to a decent pipe. No worries with a 4 stroke, a chunk of water pipe would be just as effective.
Great point!
And the looks on the gas station attendant when say only one dollar worth of gas no mixing oil and gas out on the road
Squat251 Ah, another excellent point that I forgot to mention in MY comment! The “muffler” on the 2-stroke engines tend to collect oil from the exhaust smoke, and can eventually congest the flow enough to cause poor engine operation if not drained and cleaned when needed. Such a pain...
True. Flow does matter a bit, but a 2 stroke really needs a good design.
A 2stroke does not need an expansion pipe though
I have a 2 stroke that I’m helping my friend build and it didn’t come with an exhaust 😂 so it’s loud af
Wow! I can only imagine!
No pipe will burn up 2t rings
Time to fab up an expansion chamber. Get the dimensions right and you could roughly double the power. 5hp/50cc is MILD for a 2-stroke.
@@JETZcorp yes, many don't realise you get more power with exhaust on 2 stroke
JETZcorp these will likely explode. Sure for a chainsaw that’s not a hard figure to hit (most stock 2 strokes of that size run over 12k rpm). But these are made of chinesium castings and you can often see holes right through thin sections of metal making them a bit of a bomb between your legs. The amount of power is far, far less than a 25cc grass trimmer (my grass trimmer bikes go much faster and climb up way more than these 2 stroke kits, much more power even stock). I’ve noticed the stock 2 stroke kit pipe is really crappy though, so just changing to litteral 90 degree pluming fitting then to a go-cart exhaust not only made it sound way cooler (same noise level, but instead of crap it sounded like a deeper dirt bike, actually sounded really nice), but top speed increased a little. Also the stock filter is really terrible, a short 1/4 mile on gravel and you’ll find small chunks of gravel in the carb... like the airbox holes are basically lined up for the wheel to throw rocks into it and that foam is so porous anything less than a pencil will go right through it, so I used a “sock technology filter” straight from my feet and solved that, you bet that got some comments for elegant filter of the year...
Pros: cheap, starts easy (pedal 6 mph and pop the clutch, starts every time unless the coil or electrical box is fried which does happen), easy to install (30 minutes estimated, it’s only 4 engine bolts after all and it’s only the wheel that’s time consuming).
Cons: weak as hell (my estimate is 1 HP), slow (25 mph roughly on my 24 inch wheels), guzzles fuel about 30% more than my real dirt bike doing 70 mph on gravel.
Recommended? Yeah, they are a blast! Legal in Oklahoma and quite frankly my custom designed grass trimmer and chainsaw bikes are insanely labor intensive with lots of welding and customizing suspension forks (front wheel drive, excellent for street drifting and off-road fun!), so the price is not even on the same planet. The 2 stroke kit is good enough and if it’s stolen (like mine was for example), it’s not the end of the world and you can get another one for the cost of a single Benjamin! They definitely serve a purchase, but if performance is what you’re expecting go somewhere else (maybe go electric, my ebike practically does wheelies at take off, and it might if I weren’t in a full aero-tuck position, it’s 37.5 amps constant during acceleration measured with a meter at 58v and I’m upgrading it to 108v soon, like they have insane torque and you get 30 mph in like 2 seconds or less as your butt is sliding off the seat, haha!)
Great review, was really surprised at how fast they went.
Thank you!
I love the smell of two stroke in the morning ... especially a methanol mix of the old mx bikes .... and the blue haze! Mind you, that 4 stroke kit is a much better option
Thanks for the feedback.
Great shootout! 👍👍
As a small engine mechanic, in my opinion, there is no substitute for the 2-stroke. A little smoke doesn't bother me. The light weight, low cost, high power output, and ease of rebuilding or repairing keeps a smile on my face, whether it's a leaf blower, or my '74 Yamaha RD350 twin. 😎
Great point! That "74 Yamaha RD350 is a nice bike and hard to find!
@@ProjectFarm Thanks! I love that bike. I sold my Harley, and a built Yamaha Roadliner with 91 HP & 115 ft.lbs. of torque, and kept the RD. Fits my small stature perfectly, and is a ton of fun to ride! :)
Oo i have a 71 CS3 im rebuilding
@@noone-nd4ml Nice!! 👍
+Smitty Your comments are those of an ill informed person without critical thinking skills. Rational people detest wholly unnecessary noise and smoke, so we must dismiss your nonsense.
It would be cool to see a snowmobile motor in a bicycle.
Thanks for the video
Thanks for the video idea. You are welcome!
Almost all af these advantages that the 4T has over the 2T can be fixed.
1. You can buy a pull start for the two stroke for a few bucks
2. Buy a boost bottle and/or an expansion chamber. Not only they eliminate the heavy smoke problem, but they also cease vibration and add horsepower.
3 and 4. Here you're right.
5. Buy a tuning carburator. It also adds horsepower.
6. See part 2. Also put some rubber, like an inner tube from a bicycle wheel, between the motor mount and the frame.
a boost bottle does nothing else but hold fuel for extra acceleration! period!
it does NOT cause less smoke as smoke is from the oil in the gas, if the boost bottle can remove smoke it actually means that oil is removed which leads to engine wear and at the end a broken engine...!
also it gives NO extra HP as it doesn't provide the engine with all time extra fuel, only at acceleration! and it removes no vibration at all, if anything it would give more vibrations due to the more power you claim it would give..
a two stroke engine has always been known for more power, but at a cost, about 40% of the fuel runs straight through the whole system not giving you any use of it and it is the reason for the muffler getting oiled up and the muffler wool getting soaked and then needing replacement wool...
only power and the agressive acceleration is good, but not on a simple bike used for going to school or work, nobody wants to smell like a kid that have been dirt biking all day in the field...
two stroke is good for racing and playing around, but 4 stroke is a winner everywhere else!
i have driven all sorts of scooters, mopeds, bikes with two and four stroke engines since the 80's and two stroke is for fun and racing only! in that game the 4 stroke is like tampons, they belongs to pussy's...
For a comparison data point, I used to have a Honda NC-50 Express. This was a 2-stroke (oil injection, no mixing required) 49cc single speed motorcycle that looked just like a moped but without pedals ($325 new in 1978). It topped out about 28mph on level ground. Given a hill it would accelerate to about 35 mph and could sustain 32mph thereafter on level ground. It got about 175mpg and went 1,000 miles on a quart of oil, no visible exhaust. Used to find almost enough change laying in the curbs to fuel it (it stopped on a dime when I stopped FOR a dime).
Thanks for sharing.
I would love an actual MPG rating with these things.
Great suggestion! Thank you
@randy s it's less then that, i owned one. my
2 stroke got 50 tops
@randy s true true, didt think of that
randy s dam! Hmmm maybe get one of these just for close by errands 🤔
Only issue would be getting it stolen while you’re in the store.
From so far experiences I say 40-50mpg
PLEASE throw a turbo on! That would be nuts!
Great video idea!
would never spool
Supercharge it instead with a leaf blower!
The air output is too small, the turbo wouldn't make any boost.
There isn’t one small enough.
+1 Electric (if not already)
I know you love comparison videos.
Initial cost, ease of install, range, speed, mx, noise, ride feel
Thank you for the video idea!
Electric (Lithium):
Worse initial cost
Easier to install
Range based on battery capacity and peddling. Gas can be a bit better as you could just fill up. Electric better for 10 miles or less as you can skip the gas station trip. Electricity cost $1 or less for a full charge. Less if your charger is energy efficient (mine is not).
Speed: street legal ebikes limited to 20mph in the USA. Non street legal the sky is the limit.
Noise: electric is 1/8 the noise of an electric drill (roughly). Almost silent.
Ride feel: electric wins unless you like some vibration.
I have had an E-bike for several years.
I have built a bunch of bikes over the years and first thing I always do is drill a few holes in the end of the exhaust pipe, (more air), the high performance 3 prong spark plug helps, I always change the 44 tooth sprocket to a 28 tooth. I personally like the dual pull brake lever if its a 2 stroke so there aren't extra levers. Oh and my favorite cheap Walmart bike to mount it on is 29" genisis mountain bike because it has disc brakes and a front shock and at high speed the 29inch bike is much more comfortable. I just recently tried the sprocket hub adapter and it is sweet. With those modifications every bike I have built goes over 40. If a tensioner is necessary the spring tensioner is a must
Thanks for sharing.
Ty for your great videos! After watching your video, I built a 2stroke motor bike for my kids. Although not easy, to get it started, needed to confirm spark with ngk plug, and rebuild carb jet, and clutch. Great content 👌
That is awesome!
I have one of these 4 stroke motor kits and I've had it going for 812 miles and counting!! Very reliable if you change the oil every so often and install everything correctly. I straight piped mine and man does that open it up... It shoots flames too!! I picked up mine for 240$, and with my experience it helps spending the extra money. As for fuel efficiency I can get about 60 miles a tank, or 120 miles a gallon!! Pretty amazing... Great alternative for city travel, as most states require under 50cc to be classified as a bike. Anything over and you need to title it and put blinkers, headlight etc... (Note: these fuel tests by me were done with the stock muffler, not straight piped.)
Awesome! Thanks for this information.
Project Farm yeah thanks for the reply.
butchtropic really? Well, I do have a bent pipe on there... it’s about 6” long
butchtropic ye it doesn’t even go faster, the back pressure from the muffler helps in higher rpms
Do you have a link to your kit?
Would love to see the torque differences between both engines as well.
The speed test, as I could see, was made in a flat road. Would be great to see on a road going up and compare both of them.
Thank you for the video idea!
this is cool , i had a very small 2 stroke car from Subaru in 1971. 2 clylinder it had a snowmobile engine.I also bought a 1967 Saab 96 with a 3 cyl. 2 stroke, it was an off road monster, both hill climbed. great milage on both.
Thanks! Thanks for sharing.
Your build skills are quite impressive. Good job!
I did not even know that these kits existed. Now I am very tempted to give it a go.
Thanks for posting.
Thanks and you are welcome!
Much of the issue with the excessive smoke from the 2 stroke is the manufacturer suggestion to use a 20:1 oil ratio combined with the rich jetting in the stock carb. Get the right size jet for a 32:1 mix (usually a #65 main jet for a stock engine/exhaust)
Thanks for the feedback.
Put a 22 hp Kawasaki lawnmower engine in a three wheel bike. You know the one with the basket in back and usually a basket case up front 😁
Wow! That's a lot of power!
@@ProjectFarm be the first to try it lol
I say try it pleaseeeee!!!!
That's a lot of power, I assume it is a ride-on mower, right? My mower has 5.5 hp, and that's already powerful for a push mower - altough I have seen some crazy push mowers with big block V8s sitting on them... xD
@@arthilas_ it's on my toro zero turn. You can pick them up on craidslist for a few hundred.
I got my zero turn for $400 of my wife's stepfather who got it from a tenants father. She pissed her dad off 😁
I’m currently doing my 1st ever engine install on my tricycle , and I chose a engine (100cc 4 stroke) that let me keep my rear storage basket . I basically used what I knew and common sense to get where I am on the install because nobody does trike videos without an engine that takes the rear axleso do that I’d love to seebit
Thanks for the feedback.
This cat deserves 👑👑👑👑 for displaying his DIY technique.
Thanks!
Another great video !! U put so much into your videos i always love to watch them
Happy to hear that!
Can you do a electric bike kit installation?
Great test idea! Thank you
@@divine308 exactly. Range is the ebike killer.
Important,!… bicycle tires are not made to go to that Speed, first bike I built like this kept getting flats.s’ tires wear out quickly’. Most important thing-at a Minimum is purchasing thorn proof tire tubes which are very thick and last much longer tires will still wear out quicker obviously because of the speed these vehicles go but you can always find heavier duty quality tires, at a minimum people should know about the thorn proof heavy duty tire tubes for these bikes. BIG DIFFERENCE’ Great job on the video as always’ thank you so much
Thanks and you are welcome!