3 more significant differences : 1) the 49cc 4-stroke engine has a forced air cooling fan that is effective at all RPMs,the 2 stroke has no cooling system, it relies on moving the bike through the air 2) The 4-stroke has a proper lubricating system, the 2-stroke has a very poor lubricating system , so the 4-stroke should typically last much longer due to less wear 3) The gas mileage is much better with the 4-stroke. Period.
I have gone up to 37 mph on a huasheng 49cc 4 stroke. On the crappy centrifugal clutch that sucks and can leave stranded at any moment leaving u to pedal ur butt home. But with a better transmission like the ezqmatic you can get excellent reliability from the engine. 2 strokes are good you just have to carry around 2 mix oil around with the tank to mix it not a big deal but something you got to do.
@@Octanetroopers_01 One of us is messed up we both can't be right. I believe the two-stroke does all four cycles in the same order as the four stroke suck squeeze bang blow. It just accomplishes this in two strokes of the piston or one revolution of the crankshaft. And of course the four stroke does it in four strokes of the piston or two revolutions of the crankshaft.
Less maintenance on the 4 and quieter too but like you said the 2 is way more enthusiast oriented and like my two rides my choice, but i would still like to build a 4 some time soon, nice vid thanks Guys!
2 stroke are faster cheaper and dirty, ride one in Cal you will get a ticket, 4 stroke last longer are cleaner, and you don't need to screw around mixing oil and gas want to go fast get a motorcycle
Great advice! There is an engine kit which fits for everyone, whether it's 2 stroke, 4 stroke, or electric. There are advantages and disadvantages each option, and should be taken into consideration when choosing an engine kit. All of our engines are intended for recreational use, and are not intended to be used on public highways or roads.
2-Stroke - All the power is in the top end, use more fuel, noisy, have to remember to pre mix your fuel, less reliable and harder to start in the cold. 4-Stroke, More torque and bottom end power, quieter, more fuel efficient, only have to remember to keep engine oil topped up, much more reliable and the most important thing... they don't smell as nice as 2-stroke ;) I am by no means opposed to 2-stroke, I actually love the things! I really do think they are better suited to high performance motorbikes rather than tiny bicycle engines though, especially if you live in the UK and want to get away with riding them around illegally without getting caught by the old bill :) Plus, from the figures I have seen quoted the power difference between the same capacity 2-strokes and 4-strokes is negligible, they are very cheaply made an are not tuned. Only when you start to polish ports, tweak carbs, filters, and expansion chambers (in the 2-stroke case) will you start to notice differences. Maybe if Stan Stephens starts doing a bicycle engine tuning service/kit I will be interested in the 2-stroke option LOL
4 strokes are for the humble man who is just enjoying a slow peaceful ride and the 2 stroke is for the rowdy millennial who has to be faster and faster and put 400$ into a 100$ bike kit
my yz 2 stroke hits 70 something, and those 4 strokes are fast too ..but it depends on the size of the motor, for the speed and power...not the strokes
I think that nobody realizes how simple a 2 stroke engine is, it has so few moving parts you can get out alot more power and better mpg, and if something breaks... you know what it is because its so SIMPLE and replace all parts within a few hours. Oil in gas? just 2%! and i have a lil Tomos 50cc, i can drive up to 50km with only 1 litre... no 4 stroke beats that XD
McMuffinFluffin yes, my friend and I assembled one of these kits on a bike and the exhaust pipe got in the way of the pedals when it was pointing down, so we switched it to were it was pointing and now we get a good wiff of fumes every time we ride it
THE 2 STROKE WILL NOT ACCELERATE FASTER WITH ANY REAL WEIGHT OR GOING UP HILL...4 STROKE WILL PROVIDE MORE TORQUE... ADJUST GEAR RATIO TO TRANSLATE THAT INTO FASTER FLAT LAND ACCELERATION THANKS 2 STROKE...
Longest I've ever run my 2 stroke was about an hour. Sometimes full throttle sometimes half. but its usually a short commute to the store and back. No issues yet.
hi bike berry what's a high end level of theft prevention for these kits, I'm thinking of u locking my cylinder to the rack at my apartments as well as wheel to frame as well.
Your information on the strokes was correct, by the manual vs automatic was wayy off. It depends on the engine you use. Most motorcycle engines for example, two or four stroke, have clutches. The "recommended riding time" is a myth. It doesn't matter either way.
Yes and I'm really digging it... Don't know if you've ever tried one or not but they sound great but they're hard to line up on a lot of bye she want to make sure you got a lot of clearance between the front tire and the bottom tube
Great video and great information. I just built a motorized bike with a two stroke engine. I kinda regretted why I didn't use a 4 stroke engine. After watching your video, I no longer regret LOL.
Now I know that my "1990 vintage Hyper motorized bicycle" is a 2-stroke one. I bought it just recently from a local pawnshop for $380.00, "as is." I had trouble turning on the engine, though, because I didn't exactly know how. I've watched another video on how to turn it on, including yours, today. Also, I didn't use a mixture of oil and gasoline on it...because I wasn't too sure about that. For a period of about 3 hours, I tried making it work. 👉 PROBLEM: They sold me the bicycle with a couple of wires loose. The one that connects to the "throttle" was disconnected. I connected one of the two wires to the blue wire that leads to the CDI box. Also, the white wire was disconnected, but I now know that it doesn't have to be connected to anything because it's optional and because it is sometimes used for connecting lights to the bicycle. 👉Another problem that I encountered was that both the gas line and the little gas filter started leaking. I need to replace those parts. 👉In the end, I decided to just come home peddling my vintage motorized bicycle, instead. Thanks for all your vital information... and for enlightening me. From, "Curious Joe" 😼👍
Have you ever had a lawsuit filed against you for unsafe manufacturing? Since the bicycle bearings (cheap walmart bikes) and the frame is not meant to withstand heavy loads and chinese engines are infamous with seizing how do you handle the complaints? Has any of your customers injured yet by a direct result of assembly / manufacturing?
wv9mm if it blows up for no reason he can claim. Lets say, perhaps a bearing on the bike burns up its on him to make sure his bike is in good working order before the engine gets installed
Peter Kapica He said "can have" these are one of only a few applications that have a manually operated clutch most 2 stroke engines use a centrifugal clutch.
I like 4 strokes, but the 4 stroke bike engines centrifugal clutch is it’s weakness. They burn out very quick and aren’t reliable. I prefer the more simple reliable 2 stroke clutch. Maybe make a 4 stroke with a 2 stroke clutch?
Hey bikeberry, I want to take a motorized bike trip from Philadelphia to Atlantic city (About 70 miles). Which engine would be best suited for the task? (and less likely to kill me) I understand 2 strokes can have a lot of performance parts or heavy duty parts that could increase reliability but 4 strokes last longer. I'm currently running a 2 stroke. what are my options ?
I'd like to order from you , but to Romania , the cost of transport is 600 $ , too much :( Hope you guys will open a store in EU too ! If you do have a store , I'm waiting for your reply
I have build a 2 stroke engine bicycle build four times but the 4 stroke is the best of reliability (Engine will always start), fuel efficiency is far better than the 2 stroke engine, quieter than the 2 stroke engine, little maintenance, gasoline burn cleaner than 2 stroke engine, very little to no vibrations, 4 stroke engine last longer than a 2 stroke engine. 2 stroke engine is noisy, it vibrate the bicycle and loosen the bolts & screws, it leaks oil, 2 stroke engine is a dirty engine cause you have to mix the oil with the gasoline together, doesn't completely burn all the fuel and sometimes it won't start. The only pros about 2 stroke engine is that the engine and parts are inexpensive, it can be easily modified or upgraded many ways (for faster speeds, aesthetics, etc., etc.) and it slightly has a bit more power than the 4 stroke engine (2 stroke engine - 66/80cc displacement, may get as little as 3 miles per hour to as high as 10 miles per hour faster than the 4 stroke engine (49cc displacement) even if both are using the same amount number of teeth on the sprocket.).
I have a 65 years old moped with a JB 2-stroke engine, and this moped was used many hours a day every day in like 20 years, and it still works great... so why can your engine run only 30 mins?
Where does the tank fuel line connect to the carb, no hoses were connected when I got the motor, there is one nipple bent downward and one straight coming from the carb and two more on the carb bowl.
Do you know what causes the 49 cc 4 stroke engine to be difficult to pull and start up? It takes multiple pulls and trying to soften the rope to start the engine
I am really loving you guys videos!!!!! so informative...I am looking for something to get around the campground in the summer. I have very little money to work with, and a womans cruiser bike. I was looking at your friction motors, are you getting anymore in stock? I sure do hope so ;) I am also a heavy rider...not too many hills at camp. If you have suggestions that be awesome!! Also interested in financing, but I have no credit, ive never had a credit card.:D Thanks again! love you guys!
A friction drive engine seems like the perfect fit. It's reliable and has the torque if you happen to come across hills. We recently ordered a large shipment of engines and parts to fill our inventory. Just a little more patience and we'll have you riding throughout summer.
can the 48-50cc 4 strokes with 5/8" shaft accept a Comet-style torque converter and if so would it line up well with the rear wheel sprocket? - that setup would have advantages with hilly terrain.
a 4 stroke ingin is composed of intake compression and power it takes a 4 stroke two revalutions of the ingin a two stroke combines exaust and power intake and compression so that it is only one revolution for each power stroke
Looking fowatd to purchasing a two stroke from you guys next week. I have a thruster 700c fixie, which motor will work best? Please provide a link. Thank you!
Is it possible to remove the (what appears to be) plastic cover from a four stroke engine. If not, is it possible to paint it as long as I take care not to get paint on anything important. would it be possible to paint the entire engine so long as proper care it taken. I have an airbrush and am skilled in using it, so painting would not be the problem. Simply wondering if it would interfere with the operation of the motor.
One thing only briefly touched on (wording was something like "4 stroke engines are better for the environment") is that 2-stroke engines have exhaust that is a LOT dirtier than 4-stroke engine exhaust. So dirty that even a tiny 2-stroke engine spews way more incompletely-burned and unburned hydrocarbons than even the largest luxury SUV with an 8-cylinder engine. Once you bolt a gasoline engine onto a bicycle, you no longer have a bicycle -- you have a MOPED, a type of motor vehicle. Like all motor vehicles, it requires licensing to be legally operated on the public streets and roads. If you build a two-stroke moped, it will be so dirty that it fails basic EPA emissions standards and can't be licensed. If you ignore these rules, a cop might notice your lack of a license plate, stop you, and write a citation with a nice, big fine. This is why bikeberry.com has disclaimers about its 2-stroke kits only being suitable for racing use.
whats the small 2 inch metal cilinder piece thats where the engine is at, around it is the sprocket that you can move with the sp sprocket tool , i lost the piece one time i forgot to adjust the screws on my 2 stroke bicicle and while riding the aluminum box went off i managed to find 1 screw and the alunimum cover purchased the screws but realize that small pin was missing. need help ca t ride it i cant press the clutch to start the engine
I've had both two strokes and four strokes the performance is about the same two strokes might have a little Edge. But because I like a reliable engine I have a 4-stroke.
Can either of these bicycles be pedaled independately while the motor is off? I used to have a scooter with a similar setup as the 4 stroke, and it seems like if you're pedaling and rev the engine, it'll engage the wheel and won't disengage unless you stop. The 2 stroke seems to be always engaged unless the clutch is pulled in
Bicycles with our engine kits can be pedaled independently by locking the clutch in its disengaged position. We provide a clutch lever with a locking pin as part of our engine kit package, or can be bought separately.
False 4 strokes are faster stock 2 strokes are faster modified and company's push the 2 stroke due to the money made off all the parts to upgrade it .There is next to no parts to upgrade a 4 stroke right now. Get a 4 stroke no mixing and way more reliable.Mine goes 43 mph with a 50 tooth sprocket 3 speed hub.
This is more of a comparison between two different models, not so much 4-stroke vs 2-stroke. The clutch has nothing to do with the engine. For example, our grass trimmer has a 4-stroke engine, and it uses a centrifugal clutch. It's also much more powerful than other 2-stroke trimmers I've used. It has a lot more low-end torque too. If I were choosing a yard tool, I'd pick a 4-stroke for sure.
wakka 2 strokes are cheaper 2 strokes accelerate faster 2 strokes have higher top speed 2 strokes = free vibrator 2 strokes run hotter and keep your legs warm 4 strokes cost more 4 strokes are pull start(meaning when the pull breaks off its toast) 4 strokes dont allow custom oil mixing 4 strokes arent noisy, competitive or get there faster DUH 2 strokes is the winner.
also 4 strokes don't _require_ oil mixing - you could still do it, and have a running engine - albeit one that fouls up and has a lifespan more similar to a 2 stroke. Leading to the advantage of longer engine life.
Is there a way that a lawnmower engine can work as well for a bicycle motor, since it's a vertical shaft will it still work if the motor is flipped horizontally?
I have seen a video that addresses that. If I recall correctly, he added some kind of metal tab that would scoop up and throw the oil to get where it needed to be. Without doing something special internally, the bearings don't get oil and will be ruined.
The other problem is you can buy a used motorcycle for $750-$800 on Craigslist. A year of motorcycle insurance is $60-$100 and a 250cc motorcycle gets about 75MPG. Plus, you can actually ride them legally on the road and they can keep up with traffic. Which makes the motorized bike more or less worthless. Now, an electric bike could be ridden on a bike trail and that's fun. But still the cost to build one is as much as buying a used motorcycle.
hey bike berry I have a schwinn JAGUAR beach cruiser it has 7 gears in the rear wheel the pedals only have one gear I want a 4 Stroke engine but I don't know what kind of kit I need with the 7 gears and also I try to look up 4 or 2 stroke instalation videos on bikes with gears (10 speed , 7 speed , mountain bikes or a bike like mine's ) but no luck do you guys know of any video or you think you guys can make a video about this it will be a big help to new customers THANKS SOON TO BE A FIRST TIME CUSTOMER AND RIDER CAN'T WAIT😆👍
2 stroke engines are very dirty. Fumes are extremely bad for your health (carcinogenic) and for the environment. But they are lighter, simpler, and cheaper.
You dont need that shit the original 2 stroke exhaust pipe in your kit does the same thing with the baffles. On a 4 stroke the factory exhaust has it too
You want a 4-Stroke! Especially if you want a to ride for more than 20-30 mins in temps above 80. In my experience, 2-strokes are a pain in the ass. Mixing oil + gas = EXPENSIVE FUEL! Who cares if you're getting 100 mpg when you are paying 2.50/gal for gas and 5.00 for oil mix. That's 7.50/Gal vs 2.50/Gal. So now, your noisy smokey rattling pain in the ass little motor who only likes cold weather REALLY only gets 33/Mpg. You're Welcome!
Is the recommended ride time for the two stroke really only 30 mins I mean that's shit I want to take it out an ride for at least an hour or so, I just got mine an my commute to work is only 20 mins at full throttle but I've been thinking about taking it out for a cruise
My 4 stroke vibrates like crazy and I'm not sure what's wrong, I have a 2 stroke build that i put together earlier and that one rides alot smoother but my 4 stroke build vibrates like crazy even at idle and I'm not sure why..
3 more significant differences : 1) the 49cc 4-stroke engine has a forced air cooling fan that is effective at all RPMs,the 2 stroke has no cooling system, it relies on moving the bike through the air 2) The 4-stroke has a proper lubricating system, the 2-stroke has a very poor lubricating system , so the 4-stroke should typically last much longer due to less wear 3) The gas mileage is much better with the 4-stroke. Period.
air cooling fan? where
Different strokes , for different folks
Nice man
I've never heard of the 30-min ride time on 2-stroke engines. I ride mine for one and a half hours normally and never have any problems.
Its just recommended.
@@boibruh1115 same thing. But i didn't know at that time. If i knew that recommendation i wouldn't have done that.
I’m going to get the 2 stroke kit
Anu ba maganda gas tlga pag 4 stroke
I NEED A PREDATOR KIT!!!!!! been looking n waiting for ions😭😭😭
I have gone up to 37 mph on a huasheng 49cc 4 stroke. On the crappy centrifugal clutch that sucks and can leave stranded at any moment leaving u to pedal ur butt home. But with a better transmission like the ezqmatic you can get excellent reliability from the engine. 2 strokes are good you just have to carry around 2 mix oil around with the tank to mix it not a big deal but something you got to do.
I’m a new driver…and thank u….I now am sticking with my 2 stroke….thank u…
LOL 4 strokes per revolution! they are both 2 strokes per revolution. its 4 strokes per POWER cycle for a 4 stroke!
Up and down movements both count as a stroke.
2 Stroke- 1.Suck bang 2. Squeeze & Blow
4 stroke- 1. Suck 2. Squeeze 3. Bang 4. Blow
100th like
Stfu
@@Octanetroopers_01 One of us is messed up we both can't be right. I believe the two-stroke does all four cycles in the same order as the four stroke suck squeeze bang blow. It just accomplishes this in two strokes of the piston or one revolution of the crankshaft. And of course the four stroke does it in four strokes of the piston or two revolutions of the crankshaft.
Less maintenance on the 4 and quieter too but like you said the 2 is way more enthusiast oriented and like my two rides my choice, but i would still like to build a 4 some time soon, nice vid thanks Guys!
the 4 needs oil changes. The 2 doesnt
@@funnypranker34 yes, but the 2 stroke needs a lot more maintenance and you need to mix the oil
2 stroke are faster cheaper and dirty, ride one in Cal you will get a ticket,
4 stroke last longer are cleaner, and you don't need to screw around mixing oil and gas
want to go fast get a motorcycle
Great advice! There is an engine kit which fits for everyone, whether it's 2 stroke, 4 stroke, or electric. There are advantages and disadvantages each option, and should be taken into consideration when choosing an engine kit. All of our engines are intended for recreational use, and are not intended to be used on public highways or roads.
Lol I live in Visalia, California which is in the central valley and cops don't care about 2 stroke engines as long as we wear a dot approved helmet
what if you cant get a motorcycle or dont have a drivers license yet?
@@bikeberry why are you talking about commute in the video? Haha
I prefer a briggs and stratton flathead. You can get 5 to 11 horsepower out of it. Plus the sound and reliability of a flatty bike is priceless.
Had a 2 stroke never wanted to run
Went to four stroke slower yes but less time in the garage
Plus I can just pull up to the pump and fuel up
You can modify the 4 strokes but the modifications are harder to do. You can port and polish, bigger carb, header pipe, bigger valves, etc.
This is exactly what I needed to see. Car broke down and need a way to get to work. May be slower with the 4 stroke, but it sounds way more reliable
Yes, my 2 stroke breaks down very often
2-Stroke - All the power is in the top end, use more fuel, noisy, have to remember to pre mix your fuel, less reliable and harder to start in the cold. 4-Stroke, More torque and bottom end power, quieter, more fuel efficient, only have to remember to keep engine oil topped up, much more reliable and the most important thing... they don't smell as nice as 2-stroke ;) I am by no means opposed to 2-stroke, I actually love the things! I really do think they are better suited to high performance motorbikes rather than tiny bicycle engines though, especially if you live in the UK and want to get away with riding them around illegally without getting caught by the old bill :) Plus, from the figures I have seen quoted the power difference between the same capacity 2-strokes and 4-strokes is negligible, they are very cheaply made an are not tuned. Only when you start to polish ports, tweak carbs, filters, and expansion chambers (in the 2-stroke case) will you start to notice differences. Maybe if Stan Stephens starts doing a bicycle engine tuning service/kit I will be interested in the 2-stroke option LOL
Jack Hakke I got a 2 stroke with high top end speed and lots of torque. I will dust u on my 80cc 29 inch cruiser
He is wrong from the beginning.
Both engines have two strokes per revolution.
he mean to say two strokes per powerstroke
4 stroke quieter, more efficient, more durable. GXH50 is the top dawg
Why do I always watch comparison videos just after I buy something :(
Which one you got
@@integrationofmanandmachine4714 2 stroke. Theyre a.good engine but usually rip spokes off bike wheels and even broke my bikes pedal axel/gear thing
@@edg6779 yeah because the clutch just lays down alot of torque at once. While the 4 stroke gets it up to speed but wont ruin your spokes as fast
4 strokes are for the humble man who is just enjoying a slow peaceful ride and the 2 stroke is for the rowdy millennial who has to be faster and faster and put 400$ into a 100$ bike kit
my yz 2 stroke hits 70 something, and those 4 strokes are fast too
..but it depends on the size of the motor, for the speed and power...not the strokes
Can i fit a 90cc dirtbike motor with tranny into my motorbike?
You helped me answer all the questions I was thinking of. Perfect presentation thanks
I think that nobody realizes how simple a 2 stroke engine is, it has so few moving parts you can get out alot more power and better mpg, and if something breaks... you know what it is because its so SIMPLE and replace all parts within a few hours.
Oil in gas? just 2%! and i have a lil Tomos 50cc, i can drive up to 50km with only 1 litre... no 4 stroke beats that XD
Two strokes are great in that way but I think they make the most annoying noise conceived by man
The Piscis Its better than a car with a fartcan atleast lol
+The Piscis but smell great
McMuffinFluffin yes, my friend and I assembled one of these kits on a bike and the exhaust pipe got in the way of the pedals when it was pointing down, so we switched it to were it was pointing and now we get a good wiff of fumes every time we ride it
+Gecko Gremlin Generally, no one 2 stroke can beat 4 stroke, in terms of consumption ...
THE 2 STROKE WILL NOT ACCELERATE FASTER WITH ANY REAL WEIGHT OR GOING UP HILL...4 STROKE WILL PROVIDE MORE TORQUE... ADJUST GEAR RATIO TO TRANSLATE THAT INTO FASTER FLAT LAND ACCELERATION THANKS 2 STROKE...
@@brytodunsm5713 yes, yes they are
...it says they recommend 30 min ride time for a 2 stroke but I think the shortest I've ridden mine was an hour and the longest was 4...
Crazedisme me too no harm
bluckingblucker XD I blew my engine a few months ago! now I have a ninja 250 xD
Crazedisme, I ridden mine longer than 30 minutes too.
Longest I've ever run my 2 stroke was about an hour. Sometimes full throttle sometimes half. but its usually a short commute to the store and back. No issues yet.
Crazedisme
Yeah I was gonna say a half hour? How has yours held up over time?
hi bike berry what's a high end level of theft prevention for these kits, I'm thinking of u locking my cylinder to the rack at my apartments as well as wheel to frame as well.
Your information on the strokes was correct, by the manual vs automatic was wayy off. It depends on the engine you use. Most motorcycle engines for example, two or four stroke, have clutches.
The "recommended riding time" is a myth. It doesn't matter either way.
Yes and I'm really digging it... Don't know if you've ever tried one or not but they sound great but they're hard to line up on a lot of bye she want to make sure you got a lot of clearance between the front tire and the bottom tube
Weird, online I've read that top speeds for a 4 stroke is around 20-30 mph and a 2 stroke 30-45 mph
Great video and great information. I just built a motorized bike with a two stroke engine. I kinda regretted why I didn't use a 4 stroke engine. After watching your video, I no longer regret LOL.
Always glad to have helped. There really isn't any wrong choice between the engines, it all comes down to what you're looking for.
Want better top speed? Get the 2-stoke.
Want more power? Get the 4-stroke!
hi eh i can argue that. Two strokes have powerband
Hey guys, my brake cable gets out of adjustment very quickly no matter how tight the cable is. Any ideas? I got a 2 stroke and its fun to ride.
Peter Kapica go to a bike shop, might be worn out cables, or not tightening the brake linw bolt good enough
Now I know that my "1990 vintage Hyper motorized bicycle" is a 2-stroke one. I bought it just recently from a local pawnshop for $380.00, "as is."
I had trouble turning on the engine, though, because I didn't exactly know how. I've watched another video on how to turn it on, including yours, today. Also, I didn't use a mixture of oil and gasoline on it...because I wasn't too sure about that. For a period of about 3 hours, I tried making it work. 👉 PROBLEM: They sold me the bicycle with a couple of wires loose. The one that connects to the "throttle" was disconnected. I connected one of the two wires to the blue wire that leads to the CDI box. Also, the white wire was disconnected, but I now know that it doesn't have to be connected to anything because it's optional and because it is sometimes used for connecting lights to the bicycle. 👉Another problem that I encountered was that both the gas line and the little gas filter started leaking. I need to replace those parts. 👉In the end, I decided to just come home peddling my vintage motorized bicycle, instead.
Thanks for all your vital information... and for enlightening me. From, "Curious Joe" 😼👍
how many CCs was the 2 stroke in this video?
aCardboardTube 66cc
4 storke will last longer at a cost of a very minor loss of power. 2 stroke gives you more power but wears out quicker.
Yeah had I known the drawbacks I'd have 100% gotten a 4 stroke instead of a 2 stroke, my 2 stroke is horrendously unreliable
Watch someone who rides a bicycles talk about internal combustion engines without going into detail or talking for more than a minute straight.mp4
lol
Very informative! Thank you much!
anyone know what the weight limits are on these
Wow! you deserve many subscribers
Have you ever had a lawsuit filed against you for unsafe manufacturing? Since the bicycle bearings (cheap walmart bikes) and the frame is not meant to withstand heavy loads and chinese engines are infamous with seizing how do you handle the complaints? Has any of your customers injured yet by a direct result of assembly / manufacturing?
Mozart i second this
Mozart mix the oil right for 2 stroke engines and they can outlast 4 strokes. Not saying they will, but they can. Theres a difference
wv9mm once its under 50cc and cant go over 20 mph youre grand
wv9mm if it blows up for no reason he can claim. Lets say, perhaps a bearing on the bike burns up its on him to make sure his bike is in good working order before the engine gets installed
2 stokes can have cyntrifical clutches too brehh....i dnt think i spelled cyntrifical right tho
Wrong, Its got a dry clutch like a manual transmission car
Peter Kapica
He said "can have" these are one of only a few applications that have a manually operated clutch most 2 stroke engines use a centrifugal clutch.
Daniel Serrano it’s just the type of engine popular for the bike to motorcycle conversion
I like 4 strokes, but the 4 stroke bike engines centrifugal clutch is it’s weakness. They burn out very quick and aren’t reliable. I prefer the more simple reliable 2 stroke clutch. Maybe make a 4 stroke with a 2 stroke clutch?
Hey bikeberry, I want to take a motorized bike trip from Philadelphia to Atlantic city (About 70 miles). Which engine would be best suited for the task? (and less likely to kill me) I understand 2 strokes can have a lot of performance parts or heavy duty parts that could increase reliability but 4 strokes last longer. I'm currently running a 2 stroke. what are my options ?
My two stroke blew compression after 30km, 4 stroke kit is on its way
what does that even mean? new parts are like 15 dollars for the piston and 10 for the head. 20 for cylinder lol
Thumbs up for this great informative video. Subscribed. Full suspension mountain bike with an engine might be really nice. Would be light AF.
I'd like to order from you , but to Romania , the cost of transport is 600 $ , too much :( Hope you guys will open a store in EU too ! If you do have a store , I'm waiting for your reply
I have build a 2 stroke engine bicycle build four times but the 4 stroke is the best of reliability (Engine will always start), fuel efficiency is far better than the 2 stroke engine, quieter than the 2 stroke engine, little maintenance, gasoline burn cleaner than 2 stroke engine, very little to no vibrations, 4 stroke engine last longer than a 2 stroke engine. 2 stroke engine is noisy, it vibrate the bicycle and loosen the bolts & screws, it leaks oil, 2 stroke engine is a dirty engine cause you have to mix the oil with the gasoline together, doesn't completely burn all the fuel and sometimes it won't start. The only pros about 2 stroke engine is that the engine and parts are inexpensive, it can be easily modified or upgraded many ways (for faster speeds, aesthetics, etc., etc.) and it slightly has a bit more power than the 4 stroke engine (2 stroke engine - 66/80cc displacement, may get as little as 3 miles per hour to as high as 10 miles per hour faster than the 4 stroke engine (49cc displacement) even if both are using the same amount number of teeth on the sprocket.).
I have a 65 years old moped with a JB 2-stroke engine, and this moped was used many hours a day every day in like 20 years, and it still works great... so why can your engine run only 30 mins?
Erik Blomgren they're buying cheap chinese parts
Yeah, Probably...
Things were built to last back then.. not the cheaply made horseshit on the market today. Made to break so youll have to keep buying engines
Where does the tank fuel line connect to the carb, no hoses were connected when I got the motor, there is one nipple bent downward and one straight coming from the carb and two more on the carb bowl.
I'm 5'3" 120 lbs.
I need to take advantage and get a motor ;)
they are less then 200
This is very good. Ridiculously non technical but well explained.
Thank You !
How come you guys don't collaborate with SICKBIKEPARTS and offer shift kits or show how to use them along with these kits?
Do you know what causes the 49 cc 4 stroke engine to be difficult to pull and start up? It takes multiple pulls and trying to soften the rope to start the engine
I am really loving you guys videos!!!!! so informative...I am looking for something to get around the campground in the summer. I have very little money to work with, and a womans cruiser bike. I was looking at your friction motors, are you getting anymore in stock? I sure do hope so ;) I am also a heavy rider...not too many hills at camp. If you have suggestions that be awesome!! Also interested in financing, but I have no credit, ive never had a credit card.:D Thanks again! love you guys!
A friction drive engine seems like the perfect fit. It's reliable and has the torque if you happen to come across hills. We recently ordered a large shipment of engines and parts to fill our inventory. Just a little more patience and we'll have you riding throughout summer.
great vid very useful summary
can the 48-50cc 4 strokes with 5/8" shaft accept a Comet-style torque converter and if so would it line up well with the rear wheel sprocket? - that setup would have advantages with hilly terrain.
4 stroke should have better topend.2 stroke has small power curve
Excellent video, thanks for the info.
Please Make a video on how to install electronic starter in 4 stroke bicycle engine
a 4 stroke ingin is composed of intake compression and power it takes a 4 stroke two revalutions of the ingin a two stroke combines exaust and power intake and compression so that it is only one revolution for each power stroke
Looking fowatd to purchasing a two stroke from you guys next week. I have a thruster 700c fixie, which motor will work best? Please provide a link. Thank you!
Does the 2-stroke vibrate a lot due to not having rubber motor mounts?
It does a bit more
Is it possible to remove the (what appears to be) plastic cover from a four stroke engine. If not, is it possible to paint it as long as I take care not to get paint on anything important. would it be possible to paint the entire engine so long as proper care it taken. I have an airbrush and am skilled in using it, so painting would not be the problem. Simply wondering if it would interfere with the operation of the motor.
is it 30 min ride time because it might overheat overwise? what if adding fans to the outside that blows onto the motor?
One thing only briefly touched on (wording was something like "4 stroke engines are better for the environment") is that 2-stroke engines have exhaust that is a LOT dirtier than 4-stroke engine exhaust. So dirty that even a tiny 2-stroke engine spews way more incompletely-burned and unburned hydrocarbons than even the largest luxury SUV with an 8-cylinder engine.
Once you bolt a gasoline engine onto a bicycle, you no longer have a bicycle -- you have a MOPED, a type of motor vehicle. Like all motor vehicles, it requires licensing to be legally operated on the public streets and roads. If you build a two-stroke moped, it will be so dirty that it fails basic EPA emissions standards and can't be licensed.
If you ignore these rules, a cop might notice your lack of a license plate, stop you, and write a citation with a nice, big fine. This is why bikeberry.com has disclaimers about its 2-stroke kits only being suitable for racing use.
This is true however some local and state laws allow for these engines. Also, check out our EPA approved kits.
whats the small 2 inch metal cilinder piece thats where the engine is at, around it is the sprocket that you can move with the sp sprocket tool , i lost the piece one time i forgot to adjust the screws on my 2 stroke bicicle and while riding the aluminum box went off i managed to find 1 screw and the alunimum cover purchased the screws but realize that small pin was missing. need help ca t ride it i cant press the clutch to start the engine
I like that 2 strokes are faster but I also want my motor to b quiet. I'm torn
Same. I wonder how much louder they actually are though
Rickyfyied not that much louder actually. They can be if you mod them but 2 strokes arent that much louder than a 4
Devin S
Get a muffler for your 2 stroke
Upgrade the muffler then
Rickyfyied at full throttle, the 2 stroke is louder. Straightpiped the 2 stroke can be heard from miles away. Not kidding
excellent vid. fully enjoyed
In the video what did you have on the 4 stroke coming off of the shaft
I've had both two strokes and four strokes the performance is about the same two strokes might have a little Edge. But because I like a reliable engine I have a 4-stroke.
Can either of these bicycles be pedaled independately while the motor is off? I used to have a scooter with a similar setup as the 4 stroke, and it seems like if you're pedaling and rev the engine, it'll engage the wheel and won't disengage unless you stop. The 2 stroke seems to be always engaged unless the clutch is pulled in
Bicycles with our engine kits can be pedaled independently by locking the clutch in its disengaged position. We provide a clutch lever with a locking pin as part of our engine kit package, or can be bought separately.
False 4 strokes are faster stock 2 strokes are faster modified and company's push the 2 stroke due to the money made off all the parts to upgrade it .There is next to no parts to upgrade a 4 stroke right now. Get a 4 stroke no mixing and way more reliable.Mine goes 43 mph with a 50 tooth sprocket 3 speed hub.
This is more of a comparison between two different models, not so much 4-stroke vs 2-stroke. The clutch has nothing to do with the engine. For example, our grass trimmer has a 4-stroke engine, and it uses a centrifugal clutch. It's also much more powerful than other 2-stroke trimmers I've used. It has a lot more low-end torque too. If I were choosing a yard tool, I'd pick a 4-stroke for sure.
wakka
2 strokes are cheaper
2 strokes accelerate faster
2 strokes have higher top speed
2 strokes = free vibrator
2 strokes run hotter and keep your legs warm
4 strokes cost more
4 strokes are pull start(meaning when the pull breaks off its toast)
4 strokes dont allow custom oil mixing
4 strokes arent noisy, competitive or get there faster
DUH 2 strokes is the winner.
+gefluzafix Aaaannd . . . you're under 28 years old . . .
nope
+TIMEtoRIDE900 what kind of shitty insult is that.... I'd prefer to be under 28 years old thanks, go enjoy back problems
You can easily fix the starting mechanism if you know how to turn a wrench and tie a knot
also 4 strokes don't _require_ oil mixing - you could still do it, and have a running engine - albeit one that fouls up and has a lifespan more similar to a 2 stroke.
Leading to the advantage of longer engine life.
Bro that was helpful af an simple so thanks appreciate you sir have a good day
I want to run a 2 stroke for 2 hrs. Can we add a cooling system or?
I have a 29” Mongoose Excursion 21 Gear Mountain Bike. What is the best motor kit for it?
Thanks for the helpful video!
On the 2 stroke, is that the rear gas tank you sell on you website?
Can you do a video on how to install a jack shift kit ??
Is there a way that a lawnmower engine can work as well for a bicycle motor, since it's a vertical shaft will it still work if the motor is flipped horizontally?
I have seen a video that addresses that. If I recall correctly, he added some kind of metal tab that would scoop up and throw the oil to get where it needed to be. Without doing something special internally, the bearings don't get oil and will be ruined.
How can I make my 2 stoke a pull start ? Am really tierd on pedal start. Because it make my bike havey and take lots of energy
The other problem is you can buy a used motorcycle for $750-$800 on Craigslist. A year of motorcycle insurance is $60-$100 and a 250cc motorcycle gets about 75MPG. Plus, you can actually ride them legally on the road and they can keep up with traffic. Which makes the motorized bike more or less worthless. Now, an electric bike could be ridden on a bike trail and that's fun. But still the cost to build one is as much as buying a used motorcycle.
hey bike berry I have a schwinn JAGUAR beach cruiser it has 7 gears in the rear wheel the pedals only have one gear I want a 4 Stroke engine but I don't know what kind of kit I need with the 7 gears and also I try to look up 4 or 2 stroke instalation videos on bikes with gears (10 speed , 7 speed , mountain bikes or a bike like mine's ) but no luck do you guys know of any video or you think you guys can make a video about this it will be a big help to new customers THANKS SOON TO BE A FIRST TIME CUSTOMER AND RIDER CAN'T WAIT😆👍
2 stroke engines are very dirty. Fumes are extremely bad for your health (carcinogenic) and for the environment. But they are lighter, simpler, and cheaper.
2 strokes have less power and a 4 stroke has more power on hills as well as a 4 stroke can in fact get to a top speed of 36mph i know i have done it
What are the CC's of these bikes?
need to add a us forest servive approved spark arrester do u have one to add to existing mufler systems.
You dont need that shit the original 2 stroke exhaust pipe in your kit does the same thing with the baffles. On a 4 stroke the factory exhaust has it too
Once you go 4stroke... You wont go back to the 2stroke!!😂
It's hard to sling a 2 stroke apart a 4 stroke will spin bearing or sling apart torqued up
good job
Can I put my FMF Fatty from my cr125 on the 2 stroke version?
What size engines were you using for the estimate of speed?
is there a way to put a clutch lever on a 4 stroke
Our 4-stroke engines do not require a clutch lever, but have heard of DIY modifications to attack a manual clutch.
You want a 4-Stroke! Especially if you want a to ride for more than 20-30 mins in temps above 80. In my experience, 2-strokes are a pain in the ass. Mixing oil + gas = EXPENSIVE FUEL! Who cares if you're getting 100 mpg when you are paying 2.50/gal for gas and 5.00 for oil mix. That's 7.50/Gal vs 2.50/Gal. So now, your noisy smokey rattling pain in the ass little motor who only likes cold weather REALLY only gets 33/Mpg. You're Welcome!
Is the recommended ride time for the two stroke really only 30 mins I mean that's shit I want to take it out an ride for at least an hour or so, I just got mine an my commute to work is only 20 mins at full throttle but I've been thinking about taking it out for a cruise
How did u get that transmission to work on the 4 stroke
Will the Four Cycle kit give any problems size wise to my 29"s Mountain bike?
I got a 2 stroke on my 29er and it does 35 mph so no unless the frame has no space
Anyone got any decent links for chain tensioners cause the one that came with my 2 stroke is shit and keeps getting in my spokes
My 4 stroke vibrates like crazy and I'm not sure what's wrong,
I have a 2 stroke build that i put together earlier and that one rides alot smoother but my 4 stroke build vibrates like crazy even at idle and I'm not sure why..
thank you for this video.
Could you help me out, my bike was running fine then I went round corner and held the clutch in and it just cut out on me
Red Jaguar ajust you idel needle
Cant wait for my brand new 4 stroke kit but i still like those 2 stroke lol
Good Job