A Different Way to Build An Electric Dirt Bike - Part 1
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- เผยแพร่เมื่อ 6 ต.ค. 2024
- Today we are converting a cheap Pit Bike into electric power with a 6000w 72v electric motor I purchased from Electro & Co. Instead of removing the gas engine and replacing it with the electric motor, I wanted to still have the gears the Pit Bike originally had. so I figured out a way to remove the crankshaft and replace it with a sprocket so I could run it with the electric motor. I'm very excited to finish this project and see what this thing can do!!
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just a suggestion, you no longer need the gas tank, gut it out , make the outer shell a battery cover.
Exactly. Have done this a few times. Works great. Just make sure you get some air flow through there to cool the battery and speed controller.
L
I thought he was keeping get the motor
I kind of don't understand why you want the gearbox, I understand that the actual engine is part of the structure but the speed controller usually becomes the gears,well I know nothing about this but in say electric vehicles the speed controller is usually the reduction for lack of a better word even electric forklifts use only the differential.
@@clintdenman3037 you are right never need gears anymore
Hey thank you so much for the shoutout!! Love to see you playing with electric ⚡️ well done as always
Yooooooo I watch all the vids I live in Australia
@@mrWantsMx650Parts same
ive been wanting to do an electric build for a long time now too
hey bro ! how about putting an electric motor turning the crank pulley of a v8...like a supercharger. build some kind of hybrid on demand.
@@marcthefastz1000 that’s a good idea
Yeah dude. Someone needs to step out and electric hot rod ALL the things.
@@marcthefastz1000 I actually just bought a fully loaded cat trike that came with a 49cc motor on it already - the way I see it, with the regen I can ride the battery till it's empty, run the gas motor and regen battery + solar panels, if I can get enough back in the battery there's potential for 600+ miles of travel without having to find fuel. Being able to select your own motor/battery/controller combination allows you to really tune the application. I plan to upgrade it with a belt drive and enviolo CVT hub - it works if I limit the continuous torque under 125Nm, and in a range/road specific application high torque isn't needed especially if you've got gear reduction.
I want to build some hotrods but to handle the amount of instantaneous power EV can apply without shredding the drive train I'm looking at junkyards for HD belt drive trains and old shaft drive yamaha/hondas to upgrade, the powertrains are easy to find/source but getting a nice husk that doesn't have an engine already in it is the same problem I'm having launching my Kei truck EV upgrade. I'd have to buy one and sell off the power plant which usually doesn't recover the extra cost because they're *tiny* motors, subarus or not.
Man you pop up in all my favorite youtubers comments. Love what you guys do at Boosted Lifestyle
27:50 I recommend you to use a piece of glass if you want to sand something flat, and just glue the sandpaper with tape on the corners, because the glue interfere under the sandpaper making it not flat, on PC overclocking we use glass with sandpaper to sand our processors IHS to flat it out to get better heat dissipation so the CPU can run faster and cooler and it works really well.
Yes we also did the same when reseating nozzles on fuel injectors.
a certified ground surface plate can be had for not much money if you look around.. most people don't even know what they are or care and almost give them away... gives way better results than ordinary glass although glass trick does work in a pinch ive used it myself.. glass tends to flex a bit and not get things "perfect" but close enough for most jobs it seems...
Granite also if u dont wanna cut ur fingers off
Agreed, I used the glass for lapping mating surfaces on waterjet pumps🤙 it was usually a 600 wet so I would just soak it and it stuck to the glass pretty well on its own.
granite surface block is cheap. throw down water. toss your paper on it. more water. get to work. no adhesives used.
Thank you! I've been waiting for someone to do this. I get that there are losses but think it would be sooo much more fun to still have a manual transmission. Get the best of both worlds. Can't wait to see how it turns out!
u loose some power to friction but when cruising i think it will be as efficient or maybe more ! his project is not for cruising but u get what i mean
Works awesome! Here's mine
th-cam.com/video/9a_2OgRDI4Y/w-d-xo.html
@@m.i1343 Absolutely will not be more efficient than direct drive under no circumstances. The amount of additional friction is substantial.
@@bradley3549 i really don't know what to expect m8 ! my ebike though tend to have shitty efficiency when approaching its full rpms and while keeping it full throttle . i was thinking that maybe when cruising , u will be able to keep the rpms low hence having the same or slightly more range
@@m.i1343 That has more to do with air resistance than inefficiency in the system.
making parts on a lathe is a underappreciated form of art in my opinion
Got out of the usaf. And became a fabricator. Combo welder. Machine tool and cnc certs.
Awesome build. I think I know how i'm getting reverse and 5 speeds on my gokart now. Thanks for sharing the idea.
I used the idea to make lathe machine it's very good
very cool. i built a shifter e bke a while ago, and it was great. gears on electric stuff is fantastic
Nice. Did the gears help improve battery life at all?
@@gusweiss952 gears help with everything! climbing hills flat land cruising cruise speed and bettery life
I was wanting to do that with an old dirt bike years ago but then I ended up in a wheelchair. Glad to see someone doing it. Always thought it was a good idea. The electric motors and batteries are better nowadays and I think easier to find useable ones. Good job. You put a lot of trust in JB Weld.
jb weld is the shit
Hope wheel chair doesnt stop you from tinkering just go small scale rc
@@joshuadulaney5559 my hands and arms are what slowed me up. Can’t weld anymore.
I partially know the feeling I lost my leg I will get a surron...I'm determined
So about 6kw x 746 = 8 hp. Plus you have the benefit of gears and instant torque of electric power. Should go pretty good 👍🏻
That's pretty close to what that 125 put out new so it will be interesting to see the performance
6kw is also the rated output. Depending on how the controller works, peak output could be much higher. Should be a little ripper
I’ve been wanting to do a build like this for nearly a decade. Glad to see someone do this just to satisfy my curiosity. Looking through the comments it appears many have wanted to do this.
I've thought about doing this for years but I was gonna run the sprocket on the outer part of the crank like where the stator goes so I could completely seal the bottom end so the crank could get oil as well. super excited to see this unfold love the crawler cant wait to see it in real action thanks for the great content Chris
Same here. I even started gathering parts to do it, but just never got to it. Its exciting to see someone get it done.
Yep this is kinda how mine is done
th-cam.com/video/9a_2OgRDI4Y/w-d-xo.html
that would snap the woofruf key unless you changed the way it mounted to the crank
@@1981dasimpson id of welded it on lol
@@jebrc option i would of prob gone for then realised i welded it on wonky
I like that you retained the clutch and gearbox. I electrified a KX 125 about 15 years ago. Direct drive. Still in use today. Registered for the street. Way more fun riding something you created yourself.
+ being able to fix it due to knowing/understanding how everything works
the best thing I see with you is the fact when you get the part right or get it running or finished you start that laugh and the smile on your face shows what all diy people should have when they build something to be proud of thanks for the Chennai
Would have looked good with the sprocket on the side in the cover that the electrical went in then the motor would have been more centered. Looks grate as is though. Can’t wait to see it preform.
Agree, then also by just covering the top part would make it oiltight and no welding would be needed. Also the seal plate would double as electrical motor mount.
A tip for welding on cast aloominyum cracks- grind a slot into the crack (let's be honest why else do you normally weld it) on both sides, like a beveled plate joint you'd do for some big bevel plate- assuming you learned as a boilermaker- never mind. Grind a slot in both sides to get that surface that absorbs oil cut out, and run a cold bead, then burn in slowly on the other side making sure it's a fully melted in joint (no edge lines- just puddle), using the other bead as a backer and letting the shittiness of the casting get homogenized in the excess. Then grind what you need to off with a die grinder, ideally air.
I learned a lot of tricks once I stopped welding in basically a cleanroom setting..
LOL, I spent many years welding tubes, cast casing, and everything else you can find on a Boilermaker job. I learned alot of tricks working with the older guys that made me a much better welder in the long run. Dont see many mentions of Boilermakers on here and its good to read one now and then. We did quite a few tank jobs using the process you mentioned above of welding both sides. Usually we would weld one side then gouge out a nice clean seam in the backside to weld up
Edit; One of the few metals I never welded on a boiler job is aluminum. Welded tons of chrome, stainless of every grade, carbon the same, some titanium and even did some brazing. But never aluminum, played with it a little on a pipe job a few times but thats about it
@@mikhail2400 haha awesome, nobody knows how to weld thick metal like a boilermaker, am I right?
And yeah aluminium is weird man, like melting butter together with a blowtorch sometimes..
Love your fabrication skills don't get me wrong but I would have started with a 2stroke lower end
Love your channel bruv. Excited about this build!
Ps. Probably don't just drain the gas in the ground tho lol
Now its less ecologic frendly.
Would be great if you could run your workspace on solarpower.
Probably shouldn't video record gas dripping on the ground...
Im.with you on chain cover. Let's not over complicate the seal though. Piece of fuel line for weedwacker split with razor will slip over edge of guard and seal great. I've done with in a pinch when didn't have grommet for hole in metal to run wires through. Love ur hard work for sure
Just casually making a crankshaft out of a wooden shed. Impressive stuff man. Keep it up.
I just thought I'd say that what you do I find amazing. The level of craftsmanship is astounding. Love your work. Wish I could have this job one day.
That thing is going to be so sick!.
Props on making those clutch splines. That was bad ass.
cool project .. but if u want a real challenge put a pinion gear on the electric motor and a ring gear on the new crank you made ,, not only would it fit perfect in front of the case it would make no noise and seal every thing up as well . just a thought ...
I’ve always wanted to see someone do this
Me too...
Here's my take on a manual electric
th-cam.com/video/9a_2OgRDI4Y/w-d-xo.html
That is the coolest thing ever! A quiet pit bike with a clutch and gears! Awesome!
why didnt you just move the motor left 3 inches and have the chain stay outside the block?
This is what I'm wondering. It would center the motor, and you could just cap off the crank case and be done with it.
I think instead of doing all the welding on the cases, I might have built a new shaft as you did but not put the sprocket on the inside of the cases. I would have made the new shaft to have it come out far enough on the alternator side to mount the sprocket. Build a plate as you did to seal of the cases. Build the motor mount off this plate to hold the motor over enough to line up with the sprocket on the new shaft.
This way you wouldn't alter the cases enough so they couldn't be switched back.
I have thought about doing such a swap on one of my parts bikes just to see if it would work. It has an oil pump that would have to stay functional. It pressure feeds the crank bearings and up to the head to oil the cam, lifters and valves. It also pressure lubes the bearings and shift forks in the transmission.
Being a larger bike than the one your working on I would want a larger motor. At least 30 HP.. The stock engine is a 50 HP.
As an electric rider, I'm stoked for the results. Very cool.
I just finished doing a full case split rebuild on my 85 ACT250R and I ended up putting my parts in a toaster oven to off gas the cases, cylinder, and head before painting. It worked great. 500°F for 15 minutes each.
Sweeet Chris!!!!! I'm glad to see one of the big YT builders doing an electric bike! I love when people use the OG gearbox. The gear noises are just part of the awesome! Also, taking electric seriously, is very sharp on your part, bro. Electric- It's the near future.....
Everyone that rides mine comments on the sound. I agree!
th-cam.com/video/9a_2OgRDI4Y/w-d-xo.html
NOT ... AFTER THE MIDTERMS WHEN THE REPUBLICANS TAKE BACK THE HOUSE & SENATE ALL THIS EV PUSH WILL DIE OUT ... OUR ELECTRICAL GRID NEEDS UPDATED BEFORE EV'S .....
Great to see your skills have upgraded over time and with a good battery pack and controller the sky is the limit
it would've been much silent if you install a belt instead of chain, overall cool idea! im down to try it myself
then you have to remove the crankshaft every time you want to change the belt lol
I had this idea about 2 months ago but never followed through. So cool to see it done irl
I LOVE this idea and I'd like to see it done a lot more.... Thank you for doing this. 😁
Cool. Maybe you can put one more motor on the other side of the sprocket. And make it a twin. And a nice cover over the chain will make it more silent. This will be really good.
I know you like to try different things, but I'm wondering about the additional width and additional weight how this will really handle in the dirt. And with a gear box there will be additional friction which the battery will have to power, so you'll probably need a bigger battery than you would without the gear box. It will be interesting to see the conclusion of this project.
it's really insignificant. You have advantages using the clutch and gearbox just as the ALTA Redshift did. As someone who has done the same thing with a CR 125 dirtbike direct drive to the rear sprocket and changed to using the 125 gearboxes. It's much better with the gearbox. Especially with an inrunner-type high RPM motor. Direct to the rear sprocket with a chain lacked torque. You would need a hub motor converted to accept a pinion gear. In the end, the weight is still the same. The inrunners just like Chris is using don't have much torque like outrunners. A gearbox or a major reduction is a must.
@@FarmerFpv yep its far easier for a small motor to trade high RPM for torque then tor try and make a motor deliver that torque directly. also motors that can deliver that much torque directly draw fairly high currents that means bigger inverter and more cooling.
@@phalanx3803 From what I am seeing, most bldc motors only run 5-6k rpm. The build I am planning is a 96v 250amp (higher volts = lower current) and trading some of the excessive torque for hp. Hopefully making it actually highway worthy.
I was thinking a centrifugal clutch would allow a faster lower voltage motor, but this takes the cake.
One upgrade would be top use pinion gears - more work, but you could mount the motor vertical in line like the former top cases.
Thinking the same with counter rotating crank halves but then arrived at a one piece crank with a bearing mounted gear on the non drive side to take up any gear climb forces. Definitely worth giving a lot more thought to. I suspect you're on to the best solution possible especially if a bit of gearing is needed for the electric motor RPM. Haven't seen the specs yet.
Good comment.
I’ve been following you since 2018.
From Ghana 🇬🇭
Couldn't you just hook up the sprocket to the flywheel side? That way there's already a seal, you would only need to machine a tapered sprocket to fit where the flyweel was. You don't even need to machine a new crankshaft, but doing it and getting rid of the counterweights is definitely better
I thought the same thing.
In an age when everything is going electric this man is doing gods work and I fully want to give thanks for all his hard work 🙏
Electric plus gears equals awesome! Well done, I think you could have put the sprocket where the fly wheel was and blanked off where the head was would have been easier, looking forward to seeing it going will be really cool
Man that is really cool! You could call it the “Stealth-cycle”. The bike you can ride by your neighbors and stealthy give them the bird.
Totally amazing what you are doing
Disappointed that would just drain the fuel on to the ground
It's the last gas that bike will ever spill 🤷
Oh the horror of it all!
OSET has every part you'd want, including frames, on their site.
Not an affiliate, just another person who found out the hardest thing about making your own EV is finding frames that ride like you want them to that *don't* have a power plant in them already. I'd be building a trials-like bike up, but took a bad step after a rafting trip about 5 years ago and smashed up my legs and spine.
I am disabled so I'm working on building up a fat tadpole as I get money for the upgrades - even with one functional leg I've broken the stock unit a bunch of times (I ride hard, why do it if you're not gonna). Some things you can't exercise your way out of so I'm finding out what I can build onto a recumbent frame. So far, it's not aggravating my actual injury site (residual damaged spinal column after rafting trip) but I need a pretty smart pedal assist to work around a couple things I see might be a problem once I can get further out into woods, both in the EV's range/capability and mine (if I offload the bad leg correctly, it will reduce my pain/seizure trigger management a LOT) and trying to go 100% like I used to just because the bad parts are somewhat offloaded ended like I hoped it wouldn't...
I literally can't get back out until I can get the conversion completed - not everyone can afford 4500+ USD for a handi-capable vehicle of any sort and the only way I'm going to get back into the woods is to build it myself, because nobody is going to do it for me and I'm lucky to even have a place to live at this point.
The capability that EVs put in the footprint they occupy is incredibly enabling, in product design and quality of life. My ultimate goal is to get an EV service and restomod shop off the ground at some point, but first things first - getting untrapped from the house has to be done before anything else can happen, and my rides are my way back to freedom and complete independence again.
People taking the time to record, edit, produce, publish, and manage channel are making it possible for me to figure this out myself instead of spending all that time just trying to figure out who has the parts and knowledge for me to learn from. I have a LONG list of Patreon I need to support when I get out of this bastille my body has trapped me in.
If you keep getting up, gravity doesn't matter. Remember that whenever you're feeling heavy.
Thanks for the content, reading this far, and seeing us.
Everyone have a great day!
I must say, this is one of my favorite projects of yours so far. Idk if it’s because of the cool factor of an ebike with gears or that it had so much cool machine work in the “crank” part. Very cool
Check out my manual electric as well!
th-cam.com/video/9a_2OgRDI4Y/w-d-xo.html
Cool build, however the facts are the electric motors in bikes are quite dangerous. I know a guy who has a kid, he got an electric dirt bike and while charging it, burned down his whole house in CA . Let's get cooking !
JB weld will hold for a bit but the proper way to fix a crack is to drill a small hole at each end of the crack to stop it from spreading then grind it to Grove the crack and weld from both sides basically replacing the fractured metal with new. But if your going to JB weld it at least drill the ends so it doesn't spread
Steel stick would have been better for the crack. I've seen him use it before and was surprised he didn't use it this time. Oh well. That epoxy resin sucks!
Nicely done. You said the neighbors can't complain about you riding it around the neighborhood? wrong...they probably still will, especially if it looks like you're having fun.😃😃
Awesome Chris. I seen one of those Asian channels do that and that guy is brilliant. I’ve seen him take the same kind of motor you’re working on and turn them into V-Twins and in-line 4 cylinders. But I was very excited to see you do something like that. I’d love to see you convert a single cylinder engine to a multi cylinder engine too. I know you’re smart enough to do it and it would be awesome content.
@johnnytheprick I think he's talking about "Le Dan". Dude is the Allen Millyard from southeast asia lol
@johnnytheprick It's a guy. th-cam.com/channels/YzXoHko5UdtqEYwJODaOyw.html
Drain hole in the crank part of the crank case. Awesome build!
Very interesting how you are designing and building this. Your machining skills totally are amazing, the shaft you designed and machined is absolutely awesome. Looking forward to the next video.
Wow just love how you see something in your head and machine it out !!!! Amazing !!!!
I know you’re duplicating another build, and it’s too late to change it now, but I think it would be really cool if the motor had mounted where the old cylinder was and drove the crank via some bevel-gears. It would have a footprint and planform much closer to the original engine, probably get a couple double-takes from people not realizing it’s electric.
Most people ask "why?" You say "why not?" Impressive!
You shouldn't drain gas into the ground
Man your a very good Machinist Plus you can tear something like that engine and able to put it back together not knowing what your getting into !! THATS COOL OF WHAT YOU GOT DONE ! Thanks for letting me sit in your shop again and watch you
Dude there’s no acceptable reason why you just let that gasoline run out on to the ground !!! 💩🤯🤬
that little bit of gas will evaporate, lighten up Francis!
I bet you think pissing on the seat and leaving it’s OK too? It’s lazy and ignorant that’s his house his property If you drained gas on my shop floor or ground I’d ask you what are you ignorant I don’t spit on your floors Or piss on your toilet seat and then tell you clean that shit up!
@@donanders2110one gallon of gas is enough to ruin 1,000,000 gallons of water in Florida, Rickard Kopf. It’s also a crime in many places and I don’t think you know what you’re doing. Far worse is trying to use a loose spline . 😊 God bless your heart ❤️
Who would have ever thought to build this!?Absolutely awesome!
I thought about doing this last year for my grandson's little motor bike. I thought it would be easiest to remove head, cylinder, piston, connecting rod from crank and cover over the holes for the cylinder and timing chain. I would add a sprocket to the flywheel and run the electric motor to that sprocket. It eliminates all the machining and oil problems, plus it centers the electric motor to the transmission better.
That 6000 watt motor must be incredibly powerful, I was going to use an 800 watt motor, maybe I need to re-think that idea.
Just my 2 cents worth.
just imagine the torque in first gear, the burnouts will be awesome
guy.. yoour the best.. they need more guys like you.. the day went better..
This dude is good👍 Just decides and works through whatever problem keeping him from reaching his goal. Sweet!
why can't we have electric cars but with gears. I mean, this is what the enthusiasts want... Awesome Vid!! Keep it up!
Don't forget to add slots on the motor mount for the motor vents so the motor gets cooling air. Well that's a mouth full.
awesome, I enjoy watching you coming up with ideas and then machining them on video. I really enjoy watching the machining.
I kid you not, but ive been thinking to exact same thing, to replace the crankshaft with a motor so you still had your clutch and gears and stuff, nice to see somone actully do it
Awesome build. I also thinking about removing the piston & replacing it with an electric motor, I'm satisfied, I can rest in peace now.
For a good base for trueing surfaces with Emory cloth I use half inch plate glass. That works great, very flat. I use it to true up hand planes. Love this build.
Make a false fuel tank as a battery box? I'm definitely liking the approach on this build. It's always nice to try something new and different.
As I am a 30 year machinist and I seen the video a while ago ,I am truly impressed w your mechanical prowess u prob have a very hi iq good job on your successful endeavors, very impressive, especially since you are a one horse show.
The argument is presented simplicity and "no need" for a gearbox. The mechanical advantage provides the option to use a smaller motor/controller/battery and allows the electronics to operate in their most efficient range.
yes finally a video I was looking forward to electric motor with gearbox finally someone who is going to test it
Search "Denzel Motors"
They make electric motors with gearboxes
You did some nice machining on that project 👍. It would have been a lot easier if you had used a two stroke engine, there's no oil where the crankshaft lives.
That 6 jaw chuck is sweet. This conversion is really cool too
DUDE! That crank replacement was a work of art, you should be proud of it. And I totally agree, even though gears aren't really needed for electric motors, having gears makes them a million times more interesting. I only hope electric cars will have them someday.
Dude straight up flexin by throwing all that gas out...
After a while don't watching your videos im impressed with your Workshop goin from a div lathe to a (looks like) really nice one and welding aluminum with Tig is a really impressing
Jeeeeez! Your machining skills are unbelievable amazing work!
Please please please make an electric mini buggy. Just grab a cheap one (I love the tomberlin crossfire 150s) and strap an electric motor and battery to it. It's a totally untapped project market that I think has big potential. Basically a mini UTV that can be had on the super cheap. A cheap, off road vehicle that can handle two adults, AND IS QUIET? That would be amazing. Gear it to 40mph, 40miles of range, with great climbing mechanics and you've got a killer machine on your hands.
After suggesting it numerous times, finally an electric build. 👌
One of my favourite channels sir! you always inspire me to get back out into the shed and keep tinkering 👍
Great job re-engineering conversation gas to electric maintaining the gear box portion. Great concept and machine work. Looking forward to seeing it run.
This is sweet. The automotive program at my vocational school has been converting a 5 speed Chevy s10 to an electric truck using a forklift motor paired to the factory transmission with a custom machined bellhousing. It’s pretty sweet having different ranges and is probably the only way I’ll ever be into EVs lol.
Electric Motor + Transmission , Man That is so cool its hybrid.
Hey man now you going to make a revolution the history of the 🏍 🛵 🏍!
Finally someone uses an old motorcycle transmission the right way lol. Now if only there was one with a decent reverse gear.
Bro, i suggest you to create a very tight fit cam chain enclosure. So you can put transmission oil after that
Man that is so cool! I could utilise this to gain reverse on something and hook the chain drive to another engine. Definitely excited seeing some EV builds..
Can’t wait to watch part 2 and hey you should sell a kit like this I know people would buy it
I use glass for smoothing those case halfs or atv valve covers or single cylinder heads. As a at home make shift smoothing leveling job. Great work, I hope to get a lath some day
this level of craftsmanship is epic
This is freaking cool, with the battery situation you could possibly find 2 slimmer batteries and run them in parallel and mount them on both sides of the frame where the gas tank was.
Now we're cooking with electrons! :)) You've no idea how excited i am to see where you take this, and maybe future projects with EV stuff. :)
Can't wait till its complete I have 3 of these love to make them electric.. great work
Awe man can't wait to see this thing rip through them gears
The arm movement on the throttle 😂, it's all in the wrist!
That feeling of accomplishment 😁 when you know it was all your own doing , well done brother from the other side of the pond Scotland 🏴
i think overhead cam chain guides and tensioner would help
When you were thinking of how to mount the motor, I thought if you could use the cylinder and gut out the head. That way it would be sealed and could receive oil. But I'm not a metal guy. Awesome work by the way.