Electric YZ85 Dirt Bike - Part 4
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- čas přidán 15. 07. 2023
- In this video we are taking my old YZ85 dirt bike frame that I've had for years and converting it to electric. We are using a 72V 8000W hub motor and converting it to mid drive to solve the unsprung weight issue that hub motors have and installing the motor on the swing arm.
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Got to say as a massive dirt bike fan especially 2 strokes it pains me to see you change so much of the original frame. But I love how your mind works and that you will literally fabricate everything yourself you will go far my friend. Peace ✌️ from the UK 🇬🇧
At least the frame was used for something 😀
@@justinarseneau4450if he didn't convert it, it would be rotting away or sold to someone epse who would let it rot away. Most projects dont get finished
That’s the craziest gardening tool I’ve ever seen! But it looks like a lot of fun to dig rows for growing
He didn’t say but he’s planting baby e- bikes in that row , then the next row will be corn 🌽 wtf lol
You should paint or get a vinyl sticker made that looks like a gas engine and put it on the battery box! 😁
that's just cheezy
That would be to kid like
They run on liquid
A "Mr. Fusion" sticker.
Or you should?! 😁
Gotta love the big hub, instant torque surge. Puts a smile on your face every time. More flux/field weakening will up your top speed at cost of range. Adjust your battery amps until it starts to trip your BMS and back it off a bit. Increase phase amps for more off the line and initial acceleration.
Nice! Man thanks for sharing this I hope it helps him! Sounds like you know what your talking about!!
It couldn't even do a wheelie. Have you ever rode a 85 before? They can very easy.
@firstname9811 an 85 can power wheelie? How light are you? Remember, no clutch to dump on electric. I have used a G450X for a while though. That can power wheelie, once it's in its power band. Something you don't have to do with electric, the torque is instant, no hanging around. Did you even understand the comment I left? Do you know what phase amps are vs battery amps? Field weakening?
@@th3d3wd3r Thanks for proving none of you ride.
@@Censortubes Sorry I didn't see your response. I was out on the bike, you absolute weapon.
I see blown tubes in the future from bead slip. That's a crazy amount of instant power. Absolutely love it
just add more Psi
@@3949zxcvbnm Or go tubeless
@@EQINOX187rim lock is all he needs lol
I admire your tenacity! You were bound to get it right. Great project man, keep up the good content.
Cracks me up how u always have to do a burnout and u sling it all in the shop every time! Lol
This project definitely interest me more than the others. I think small frame dirtbikes are better than larger bikes when it comes electric conversions. Just look at the market, there are tons of electric pitbikes for a affordable price. I cannot say the same for electric dirtbikes, even when made from scratch they'll still cost to much. Pitbikes/small framed dirtbikes are just awesome in general.
You'll quickly change your mind about kickstand when it falls down during a jump or wheelie! Love the rest. You've progressively improved your knowledge and skills to a good fabricator. Nice work.
If it has a strong enough spring it will be fine.
Always inflate the new tube slightly before fitting into the tyre 👌👌👌
And use ludicrous amounts of talcum powder (just don't breathe it). It helps not only installing the tire over the tube, but also in use, because instead of chaffing and wearing down the tube inside the much harder tire, the talcum allows it to slip inside and rearrange itself more easily.
Nice!
No chain noise,
More power,
Helmet on,
No gears, so no clutch in when changing them,
PERFECT!
I'm even more envious for that one than for the e-pit bike, although I must say that my eyes opened wide, when I saw a selection of an outrunner motor for this project :)
It ended up great though! Would love to have such a vehicle :) Silent but fun!
Great project.
I really like dual shocks rear suspension. Thats retro❤
Would love to see the frame powder coated or painted. Nice new sticker kit. Would look sweet as.
Absolute technical Wizard. I love the build. Hats off to you. Well done.
There's definitely something special about small electric dirt bikes that has a charm I can't explain, I'd like to see you try it on the road w/ street tires supermoto style.... I have a Razor MX650 like that that I've modified and it is so much fun because people don't expect it to be fast but they are. A 72v 10,000w system can get you in the 60s easily on a kids toy.... I'm glad you've finally found an electric bike that finally works the way I've been wanting them to work for you, congrats and now I want to see you build more electric toys. 😁👍
Love the videos. Dude you have come a long way. I've been watching your videos here and there when I can since wayyy back
I would use that to dig trenches to run wire and conduit under ground. If a rock get lodged near that motor expect an explosion. Should box in that motor as much as possible, for obvious safety reasons.
I'd say let it stick at the speed it's at. More speed on this would only drain the battery pointlessly. First take it down a goat path and see what it can do. Also, yeah, the front suspension isn't quite right. Probably needs a rebuild. You've done an excellent job with this one. As bikes go, this one's your best yet.
That's turned out really nice. Love the twin shocks
I love the choice music you've chosen for this video, I'm an old school Christian metal rocker.
Thanks for showing us all your talents and skills an inventions, your number 1
Definitely a good idea to add a skid plate, you would've regretted the crap out of that the first time you go out and a rock smashed the battery etc lol Cool build, love the dusl shocks, looks badass 🔥
The environment he'd polluted or large fire he could start by puncture that lithium battery thanks him
that is such a sick bike! crazy you built the whole thing and even the swing arm!
Beautiful build. For more speed you could change sprockets or add voltage, do the second if you don't want to loose the torque it already gives off. Going 96v is much better than relying on Flux weakening
Awesome build! Can't wait to see what it can do in the dirt!!! Thanks for sharing!
That hump you made on the seat pan is called a joggle. I’m a retired welder but we shared the shop with the sheetmetal fabrication dept. Seen plenty of those joggles during my career.
crazy how it looks like a normal dirtbike, nice work
Thank you for your amazing craftsmanship. It really shows your raw talent inherited from a long line of dwarven blacksmiths. That thing looks fun!
I can tell the suspensions are great I can hear you clearly when you speak while riding 👍🏾👍🏾
Be very careful with your regen settings now that you eliminated the freewheel on the motor. Setting the regen to 100% will send you over the bars just from letting off the throttle quickly.
That said, you may like it set to 60-80% if you like massive motor braking.
When I see your notifications !!! All Right Another great video !! That darn thing has some torque now . Now you’ve got to take it apart again to paint it thanks for bringing more excitement back on my TV 😅
The bike is so cool!
I really like the bike.
You've done a really great job.
Thank you very much for this tutorial.
I wish you lots of fun with your hobby.
Keep up the good work.
I'm looking forward to your next project.
Dude you have killed this build 🤘. Nice work
Most definitely the best electric bike build yet! This one seems like it could be an actual power platform option for a YZ-80. P.S. A 2 stroke YZ will certainly rip a trench like that. maybe even a little more. Wish it had gears like a gas engine
I’m actually happy that you put a kickstand onto this build. It’s so damn annoying most bikes just don’t have them. Also I’d change the gearing just slightly, like a larger front sprocket by one tooth or so. Higher top speed, but a hair less torque.
Sweet build. I wish I was as talented and had the tools you have. I just found your channel and have been binge watching your videos. Can’t wait to see what you do next. 👍
(A YZ 85 will definitely make those same ruts your build did plus more bud.) I have to say this is a very impressive build. If I had a garage, and a little more electrical knowledge. I would love to build my own elec. MX bike as a winter project. Fantastic content! Keep it up.
Chris: I finished the project! Let's test it out.
His Workshop: What did I do to you?
😛
it is tradition that Chris must pick dirt and mulch out of his shelving for weeks after finishing a build.
Yes! 🎉 I've been waiting for this. I've followed all your builds u inspired my obsession for welding 🤙
One day your neighbor will love you for your quiet vehicles.
You're just like my dad LOL. He is like an engineer, and I'm a minimalist. I would always be like, hey let's just change this or that, the bare minimum, and it should be just fine. My dad on the other hand is like or, we can throw everything in the trash except for this triangle thing. I would just start screaming no! It's never going to get done! But then the end result would be awesome. I remember roasting the tires of my monster truck golf cart back at the golf course when I worked there as a kid, like it was yesterday. We pretty much started the monster truck golf cart ran around here LOL.
Turned out great!
Plenty of power and still looking factory...for the battery box I would cut open a jerry can and put the side panels onto the box, just for the looks...
😉
👍👍👍
that’s a sik bike build! You did a real nice job. Gonna program the controller for regen? You have the spinning mass of the motor to slow down on the rear brake, as well as the wheel. I think regen would help lots with stopping and slowing down. Keep a close eye on the six tapered bolts that fasten your front sprocket to the motor…you don’t want those loosening up! cheers, dude! Whooooop!
That's bad ass. Never seen a mid mount hub motor. Amazing work man
Great build! Love your projects and the way you work
Well, you had to do something with that hub motor. When life gives you lemons, you make lemonade. Well done.
best eletric build by far. great work!
I think you got a good one this time, especially with that hub motor. Those are tough to make work right with the centrifical input
It is true that the silence of these QS Motors is very pleasant, I also love it and I have just bought myself one of the latest Alrendo TS Bravo of which I am going to put a first presentation and test video, and even if it's a transmission with a very wide belt, twice as wide as on an S, DS and DSR ZERO Motocycle, you hardly hear it and that's great too.
You're an awesome builder/fabricator, I watched you from the beginning. I would recommend you also to focus on the painting/finishing side of things because then you'll have the complete package. Great videos, keep up the good work! Regards!
I’d say your neighbor should be happy with this project…
Congratulations!!? 🎉🎉🎉 You built the world's 1st 1:1 scale Losi MX, complete with flywheel and all!!!
Oh, a 3 speed switch is handy. Plus you can put a reverse switch on it too for assisted reversing.
If you're not going to reuse that hub motor on a rear wheel again you can shave down the outer diameter quite a bit to remove weight and the overall diameter. Your lathe should be able to fit it, I know my dad's manual Kent lathe to machine down the diameter of my 8Kw hub motor which was able to remove 3/4 inch all the qa around with sill having enough protection of the magnets. I was able to lower my mini side-by-side frame for a lower CG and have more clearance. It looks cool too when it's all silver. You gotta love that instant torque using the hub motor as a chain drive mid-mount motor. Your YZ 85 came out sweet.
Love it man! Would like to see some mods to the other bike. Maybe limit output for battery life and lower it a bit to fit you more. Possibly even smaller wheels and tires to get it lower.
Nice work! You're good at what you're doing!
Put the rear fender over the tire like a street bike. The way you have it the tire is still going to fling dirt and mud over the motor. Dope build..
Fantastic build, thanks for sharing.
Great build, really want to see how this handles in the dirt!
If you're looking for more power and top speed, go higher voltage. So a new battery and a controller will do that. The motor won't run in to trouble from a higher voltage, it will actually run cooler for the same power output (as will the phase wires). For example the 100V 250A Trampaboards VESC one is about a quarter of the volume of your current ESC and will easily double the theoretical max power and increase top speed with a higher voltage (and/or with some field weakening). Pair this with a Cycle Analyst display. I've used it in my own projects and its well worth the extra spend compared to cheaper VESC controllers. I run it at 90v +6kW peak and it is barely warm to the touch after an hour. Setup/tuning will be a bit more involved tho, but likely has a lot more knobs to turn than what you're on now. Consider it if this one happens to give up the magic smoke...
Heat buildup is a big problem for these large hubs, but injecting it with some ferrofluid and adding some cooling fins will help a lot there. Make sure to check the motor casing after some running time, ideally water/spit shouldn't sizzle away or burn a unprotected hand.. You could also look into regenerative brakes to improve on the brake performance and reduce wear.
Finally, I would be *VERY* careful with that battery as it is, I seem to recall you run it with limited or no BMS (also not sure about the cells in that thing)? This is a serious fire hazard both when charging and discharging.
Love you channel man but to be honest when I saw the start of this build I was like wtf are you gonna do with that motor😂 but fr it’s definitely one of you’re coolest builds, please keep up the awesome content!!!
Amazing job well done, what a lovely good young man you are , Great work on the bike build, Thanks for sharing the video with us👍👍👍
Put heatshrink tubes on the charging wires... also put some padding or something to prevent the main battery wires from getting worn through and shorting on the battery box.
Maybe Some People Believe Electric Power Is The Future, But Im Not One Of Them Because Nothing Sounds Better And Smells Better Than A Well Tuned
2 Stroke Engine Run On Castrol R .
Or Silkolene Race Fully Synthetic, lol
Love this build . Lost my spleen and half my pancreas to a dirt bike accident ,I know you make the right decisions but don’t forget protection lol
Yeah you have a bit of weight on that back brake with the hub motor being heavy.
Better than the last design though with the mtb frame looks like fun.
Please make a bracket for the side shroud in place of the radiator! Love the content keep up the great work 👍
Nicely done. Brakes definitely need blead.
You should connect the rear brake to the foot pedal, the stock setup.
Have a play around with rear sprocket sizes. Just a few teeth at a time. You will be surprised at the results. Great build mate👍. Imagine it with a small front hub motor built-in also 🤔❤
This is probably your best build yet.
Rear suspension looks a bit over damped, front looks a bit under sprung
quick suggestion for you wiring adventures, put one jacketed and one unjacketed connector on each side. you would have those arc issues and you also will prevent yourself from connecting the wires incorrectly.
awsome work there guy....watch out e bikes are here....ride onnn.....
Can't wait for the trail ride video!
Hy, Waaoouuuh, what amazing job you did. Very good thinking. I dont think that she goes so slowly. The speed seems OK. For the breaks, may be they need to use a little. I am waitting for the off road impatiently. Kris
There's 622 Thousand of us wondering 'Why didn't you at least Primer the frame and parts before reassembling'?You could use 'Weld-Through' primer so it all doesn't rust again./It looks Awesome,and seems to fly.The torque at launch seems great for trails,etc too.Kudos!
From what I have seen he tends to fully test something before taking it completely apart (yet again) to prime and paint. I am not that patient and tend to sling paint when I think something is even remotely done... then grind some back off when I have to change something.
Simple he wants to ride
That nocking on the skidplate reminds me of the drum intro from Phil collins in the air tonight 😂. I really like your video's dude... Keep up the good work. Greetings from the Netherlands.
You should put a little air in the tube before you install it.
It makes it easier and it avoids folds in the tube which will make the tube fail faster plus you're less likely to pinch the tube when you install it.
You know it's a good RBW video when your shop is full of dirt 😂 👍
The spinning mass of that big hub motor is like a flywheel and makes braking harder. If you can turn on regenerative braking, it should be easier to lock up the brakes.
Customary dirt in the shed burnout. Every build has one!
Turned out so great !!!
That rips. Nice job.
I know you didnt build this for weight savings, but im genuinely curious if it is heavier or lighter than the factory bike. Also the short clip of your chain flopping on the relaxed side makes me feel like you could add a spring loaded idler on it so it doesnt flop so bad. Great build though! Always love your drive and willingness to learn and do better!
Well done Chris! 😁👍
I would recomend you to make watter tank what will fill batterybox full off watter when that missfailure happend. its only way to safe ur bike to not burning.
I think that this evolution of the eBikes is really fantastic! It looks like a bloody ripper!
My minor criticism is the look of the battery box, it's just a big flat monolith that doesn't tie into any other aesthetic or angles. Do you have a bead roller? I was thinking about "make it kustom's" channel - he's an artist with that cheap modded bead roller, and it really makes some pleasant looking detail for otherwise flat metal. The important thing is that you have a high quality, functional and fun unit - your skills are enviable my friend!
You can bypass the bms on discharge side to get full power
Just an idea. Use those quick releases hood pens style. That you push and turn. For the battery door. Could work
23:18 a stock yz85 has 15kw and yours has 8kw, so yes a yz85 could dig a trench like that lol
15kw Peak and on the motor not on the wheel so meeh
Hi been watching your motorbike conversation and you have a lot of talent and vision, and the finished bike looks great. I custom make various items but I've tried welding once but was rubbish, so drill and bolt everything and fabrication. For safety would you consider using a clamp or vice when drilling as I lost a chunk from my thumb taking risks. Nice one enjoy your projects and videos. Scott
best teacher in this world
I'd love to build one of these, maybe even a 65 model size would be super fun around my house.
Great job. You have to change your grip to the handlebars. Brake with the first two fingers and hold on with the other two, please. Greetings from Argentina!!
"That thing" is pretty sweet man, good job! Hopefully u didn't mess anything up shorting the charging wires, I've ruined one doing that lol
amazing build!
I like the fact that he's never ridden it before and he floors the s*** out of it 😂 beast 💪
Lock up the rear is not that easy, it basically has to stop two rotating masses. Great build, love watching your video’s!
Any motorcycle brake system worth its salt will lock up a rubber tire on pavement. If you can't lock up your brakes you got an issue. Simple hydraulics. Fluid cannot be compressed. It's hard to lift 50 tons of dirt as well but with hydraulics. You can move mountains!
One way clutch in the rear tire would make the brakes better! Not trying to stop the inertia in the “large flywheel” motor! Kinda difficult to do ! And wouldn’t have any regen capability.
Still a awesome 😎 build 👍👍
Probably just a larger rear brake to deal with the motor.
Remember you usually pull the clutch when braking the gas pot.
Cutting that frame for the controller scares me. Need that triangulation there. Also the brakes need the right (and good quality) master cylinder. Piston size and quality is everything on that. Fun watch, thanks.
Woohoo 🎉🎉 man that's a lot of power buddy allsome stuff from cruzermans inventions 😄👍🏆 good work 😊🏆
Nice build!
BEST PROJECT EVER.