ELECTRIC CAFE RACER for $4,000 - a Freaking HUGE SPROCKET Installed

[@LordCurt]

I heard the next update is going to have something *super* cool and could shock you

[@caderaojohncyrus1378]

Just curious here, but are you guys brothers by blood?

[@LordCurt]

@@caderaojohncyrus1378 we do indeed share half our nuclear DNA

[@troyderoinjr6926]

Hell yah man glad to see you back and lively glad to see you had a good recovery

[@ryanstone1117]

Awesome job guys 👍👍👍👍 please hire a real spay painter.. no f..king chicken wire. A lot of work done keep progressing. I'm Learning to 🍻🤔🍻🤔🍻🛠

[@andyscreen2364]

@@LordCurt that's nucular 😉

[@vengefulrat3053]

Imagine they manage to figure all the stuff out and start selling kits you can convert an old cb into an electric bike in a day or three of rebuilding. Would be epic.

[@Zomby_Woof]

You're easily impressed. All the parts to do this are readily available off the shelf. The conversion process is well documented.

[@vengefulrat3053]

@@Zomby_Woof It's a matter of different factors. One, I don't have the time to go through a process of error finding like this. Two, I don't have the technical knowledge to run the math for most of the battery and controller stuff. Three, I don't have the tools to do all of that. Saying I should go do this on my own is like you saying you'll manufacture your own aspirin every time you have a headache. So yes, I'll be bloody impressed because I know, I can't build this.

[@Zomby_Woof]

@@vengefulrat3053 The whole ebike ecosphere is cracking right now. But the approach these guys are taking is...weird - and hasn't been particularly productive. Some channels are successful because they offer great content - others like this one - they seem to have tapped into that 'famous for being famous' vein. for people wanting to acquire an ebike, there are two options: buy or build. For people who are serious about getting the most bang for their buck, or are looking for a high performance option tailored to the needs, building is the only option. Even models like the Sur Ron are mass market compromises. Don't get me wrong - it's an impressive bike, but it still represents trade offs chosen by someone who isn't me - and a bike is too personal an item for it not to reflect my priorities. You aren't wrong in wanting a less intensive process than welding your own frame and building your own battery pack. But there is a middle ground. The type of kit mentioned is already available from the people who do the math vet products for reliability. Qs Motors is the leading supplier of ebike motors, with their QS 205 and 273 being the hub motors of choice. They also offer packages at varying power levels and degrees of completeness. If you have a trusted friend knowledgeable about the technology, or are willing to invest a single afternoon in cramming, and just want to write one check, they can hook you up with motor, controller, battery, bms and all the parts needed to bolt your own rig together. If one is totally non mechanical, it's a project for a long weekend - if you've changed the alternator in your car, it's a one day job. The motors are available bare, or laced into a wheel style of your choice. If you aren't coming from a bike background, I would get the motor/wheel prebuilt, or if you have a particular wheel that QS doesn't offer, just have a local shop build the wheel. Truing up a rim isn't rocket surgery, but it cab be frustrating the first time you do it. I'm going the whole diy battery route, because I'm price sensitive and the battery is so critical to how the finished product will perform. For $720 and a little sweat equity, I can pick up the components for a battery that is more than I'll ever need. 84v full charge - 72v nominal - putting out 1200 amps. The controller will be the limiting factor. I don't *need* that much power - it's just phenomenal donor batteries. I'll most likely just opt for building a 24AH unit that still pumps out 600 watts. I'm building a dual motor fat tire with enough power to haul a small trailer through sand and mud. Good luck whatever route you choose.

[@vengefulrat3053]

@@Zomby_Woof well damn that's a lot of info. But insightful. The thing is, I'm not useless when it comes to learning how to do the stuff. I can figure it out. I've built some bikes before, not built a motor though. I've done electrical on bikes. So I have that back ground. Just last night I had to put on new sprockets and chains and bushes on my bike. So I can do that. My biggest issue comes down to having the tools for the job. Welders, wrenches, benches, grinders, all of those I don't own. Just your basic run of the mill, mismatch toolbox. And of course, as I said, time. Between work and a family life, having the time to do it all, well not always possible. Initial invest also is something to ponder on but I know it pays off in the long run.

[@Zomby_Woof]

@@vengefulrat3053 You'd have no problem installing a conversion kit then. I get the time budgeting. But you have enough skills it wouldn't take very long unless you were going full customization. Of course, every project hits snags.

[@69Dartman]

Glad to see the latest project back and lord Kurt back and healthy again. This thing should be insane all around when it's done.

[@BrutalFates]

Lord Curt is the reason you were supposed to pay attention in Physics class! lol

[@TheInja]

Hahaha

[@ryanhudson4015]

i'm starting to really love this channel. i just wish you uploaded more frequently. i believe it would help a lot!

[@theprodigalstranger5259]

Glad to hear The Lord is back on his feet. I had the VID in December and it was no fun. Can't wait to see how this turns out, keep em coming!

[@TheInja]

He actually had no symptoms and was completely 100% fine, his wife had it worse, but a lot of our family are healthcare workers and are out of work for 14 days if they are "exposed" to it. We woulda just kept going but some of our family would be out of work if we did.

[@MOwinecouple]

All your videos are great! A average Joe in it for fun, being honest and just all around fun videos! Keep it up!

[@manuelsantana007]

Every day I watch your channel to see the progress of this monster. And the wait is worth every minute.

[@dadsfriendlyrobotcompany]

This is super inspirational! Out of all the electric bike builds I've watched on YT, this is my favorite. I have my frame for my 1972 Honda SL125 electric motorcycle build. I'll be using the QS 273 17" since the smaller frame doesn't have as much room as a full sized bike. I'll be going for torque since it will be a in-town rider

[@neddyl1225]

Great to see the CB back. Can't wait to see the final result.

[@AKS_88]

This build is super dope, yea we waited a lot but mechanically the bikes almost done I’m hella excited for the cosmetics and like the appearance part of the build. Kudos to you guys for getting this far tho it’s impressive to say the least. Keep it up 👍

[@beestrongbc]

👍🏾Good to have Kirk back aka The Battery Guy. 😀 Stay Well, Stay Safe you Guys. 🙏🏾🙏🏾🙏🏾

[@PikesBikes]

So pleased to see you back working on this project. Its been a long 3 months of constantly checking lol. I think you may need a better controller as it doesn't seem up to the job of delivering max capacity to the rear wheel. Hope you get it sorted 🤞 looking forward to the next video 👍

[@sebmaziu9677]

Great to see your progress! Take your time, but still cannot wait to see it all buttoned up!

[@coolissimo69]

Thinking of you Inja since yesterday, the timing was great, thanks for another great video.

[@foxxyytofficial]

OOOOOOOOOOHHHHHHHHHH YEAAAAAAAAAAAAAH!!! Let's go! One step closer to finish it!!

[@jonathanhagerty7174]

I CANNOT wait to see this build buttoned up and completed, have you thought about paint and body work going forward? After your expert AMG bumper repair the skys the limits!

[@Tianablue1]

Just discovered your channel and been binge watching loads of your videos! - In particular the chinese sportbike and E-bike ones! Great, fun videos! Great editing! Keep 'em coming! 👍

[@thomashogan1645]

Your partner should have his own channel where he maths everything out and talks about his reasoning behind certain decisions.

[@Blown75]

Happy to see you back on this project. keep up the good work.

[@ScottTheis]

Love your channel! Love your content! Never change.

[@kyletaylor2181]

What wattage soldering iron is that and what solder did you use? Very fun build

[@timmcintyre5236]

Nice build! Have you attached a voltmeter while riding to check the battery sag? My first guess is the battery sag is too much for the controller causing the cut-off. Also, did you bypass the BMS? 2nd guess would be a bad BMS. Good Luck!

[@gmfb33024]

This is my favorite build / series u have done

[@TheInja]

🙌🏽

[@richardroe6177]

Yaaaass!! Back on the cafe racer! I've been looking forward to you guys revisiting this. 😁

[@levimor98]

You need to check the BMS and the Hall sensor. It's may be to solved the problems of cut out

[@jmcsoldo]

Very cool! Lord Curt is smart but Inja, you have some in your repertoire as well! For future speed tests, buy a RPM reader to get an immediate readout. It's $15-20 on Amazon and you WILL use it again with the stuff you do. That should alleviate having to film it and count revs. To find MPH, just take wheel RPM x pi x wheel diameter (in inches) and then divide by 1056 and 💥...MPH. To find desired gearing, take the speed you want divided by the speed you're currently at and then multiply that number by the number of sprocket teeth you currently have. That will tell you how many sprocket teeth you want in order to get your desired speed. Also, you had to get this huge input sprocket made, but did you do any research on whether there was a smaller output sprocket option? Always more bang for the buck.

[@cianomalley1773]

I'd love a part Liste. Found this because I wanted to build a e moto and this one is the best so far

[@daboss298]

Hey Lord Curt and Inja. I'm doing a similar build with the ME1507 and the same controller. I've had issues with the controller cutting out and I'm also getting a lot of hall sensor errors. Two things I've found that help: 1)Make sure your controller and motor sine/cosine sensor grounds/shields are solid. 2)Increase your throttle acceleration time to 15 - 20. It's still not 100% but it makes things better. I hope its not just because the Kelly controller is crap. When I turn on the regen I get that grinding noise you described. I'm doing a build on my channel too, inspired by you guys. Keep up the good work and let me know if you resolve the issue.

[@frazahmad5268]

Great work guys really enjoyed the new things your trying with the editing. Awesome job on the work carried out on the cafe racer so far. 👍

[@jcollins310]

Love seeing the progress on this build. Keep up the good work.

[@ryanhudson4015]

Your friend lord curt is awesome man. don't ever take your friend for granted!

[@maxe16]

Love how the bike is coming together. smokin new car btw Inja :D

[@TheInja]

Thanks!!!!! 💯

[@ballisinn]

would a belt instead of chain be less noise and better lasting ?

[@danielna7157]

what's the top speed and mileage you guys expect and what motor are you guys using?

[@TheMatixen]

great video. How much time did you let your battery sit for? was it fully charged when you last used it? thx

[@liamscott8761]

Loving this build and learning lots about how I will (one day, eventually... maybe) tackle my own electric bike build :D

[@dna59]

That sprocket size just makes it look wild! I dig it!

[@Adidasfighter2006]

Lord Curt make a great Job! I like it!

[@marsrover001]

Don't forget a proper fast charger with a j1772 port. Battery nerd talk: imo the second battery shouldn't have been soldered, it should be welded with a good DC welder like a kweld. I worry if there was too much heat into the cells that would damage them. Oh, and the first 14v pack. She cooked. Would not trust it on the highway. I think those cells are ready for a fire, so maybe strap a large fire extinguisher on the back for the first few highway tests.

[@JasonWW2000]

it is not designed for fast charging. Slow charging only.

[@trevorcrane5271]

Nice to see the bike coming a long. It's been a slow process but hopefully it ends up being really fun and you had make some good videos having fun with it.

[@juggernautherculesgarcia6076]

How would I go upon connecting a homemade super capacitor battery pack to my 2021 Zero Sr

[@progechannel]

pls let me know the site where you guys boght the sprocket

[@jodydewey3516]

I havent finished watching the whole video - but I think your cutout issue may be BMS related. It would cut out due to max current but then your impulse is to back off, which drops the current below the BMS rating which allows it to go again.

[@18thekingman]

Would like to know where u buy the motor. Battery and the controller thx

[@angelrosario5241]

What kind heater are you using in the garage..??????

[@simonkennedy6116]

I hope to get enough money together to build my own electric cruiser soon, thanks Inja fo rshowing the way.

[@TheRealAlpha2]

Holy cow, that sprocket looks insane. I've only seen mini-bikes when they have the thing almost as big as the wheel I feel like this is a first for a full size bike.

[@thegodhoward8037]

I'm pretty sure zero motorcycles (the brand) has bikes like that

[@TheRealAlpha2]

@@thegodhoward8037 Zero sprockets can be large but I think they're a little more subdued. At least they seem have less material to show more of the spoke/rim so they don't look as large.

[@thegodhoward8037]

@@TheRealAlpha2 ya I could be wrong

[@TheRealAlpha2]

@@thegodhoward8037 I mean if you meant a cafe racer style bike, I don't think they do (they do mostly sport bikes and a couple of off road models) but it would be interesting to see their take on it someday.

[@thegodhoward8037]

@@TheRealAlpha2 would probably look like a better version of the sondors electric motorcycle

[@nicholasgilson6745]

Please do a build video with all parts used! Unfortunately it's hard to find information on building your own and there's not many kits and the ones that are out there the websites are awful.

[@michaelmcalpine4812]

Let's go!

[@TheInja]

LET'S GOO

[@jafhu]

LET'S GOOO

[@skchafe9310]

LET’S GOOOO

[@dylanfurm5356]

LET'S GOOOOO

[@VeeLazer]

are you and lord kurt related? ya'll look like brothers. also, your bike is coming out pretty awesome! i like it so far :)

[@TheInja]

Brothers 💯

[@neogator26]

Awesome! Between my full time job and finishing my degree I don't have as much time to follow the build as I'd like so I'm cool with the delays. lol I do have a question though. Why did you guys decide to solder the battery cells together instead of welding them?

[@TheInja]

Probably sheer thickness of the metal.

[@TheInja]

We'd have to spot weld to not damage the batteries, and we would have needed some serious tools to do that!

[@thra5herxb12s]

I'm pacing up and down waiting for the next update 😎

[@jcubano2003]

Guy's same happen to me and i by pass the discharge port and exelent the bms was cutting off .controller demanding ti much .

[@eksine]

when you showed the bondo on the front car fender just pointing out you cannot use bondo on flexible parts like plastic, it will crack and break off. use flexible body filler. also you shouldn't use that much that's too much. USC is a good flex filler

[@paule5812]

I’m curious of the max lean angle 📐 🤔 be safe guys can’t wait for more.

[@mahkyehayden1492]

All love this bike is sick but I think your shutter speed is too high or a Lil warp stabilizer is needed

[@5tevenH]

That motorcycle needs mass production, I would buy one

[@riccardo1796]

Are you using a flashed controller or an aftermarket one? It kinda looks like the zero one, but you said it came from a company

[@gilbertorestrepo551]

Love what you guys are doing 😎

[@tylerphillips1502]

Where did you get the sprocket made at,?

[@JonathanBirch7]

Awesome video. Keep on living your dreams. Regards from South Africa 🇿🇦.

[@synseer8484]

Hey not that it matters much but I just thought I'd stop by and say that I love what your doing! Hopefully this helps you get more subs. Always do you no matter what! - syn.

[@Zshaan6493]

Nice to see an electric CB build. What are the specs on that motor?

[@TheInja]

It's an ME1507 from Thunderstruck Motorsports

[@nahidhassan6422]

What sort of controller is that you are using

[@yuviywc12]

Can't wait to get it finished

[@TheInja]

Same!

[@turbotim9009]

This bike is so cool I love this build

[@johannesbeck1326]

Where did you get those batteries?

[@davidmeinertdecrepidude]

I'm trying to understand why you went to the extreme rear sprocket- wouldn't it have been faster, easier, cheaper, more efficient to just knock a tooth or two out of the front sprocket?

[@TheInja]

The motor also requires certain gearing so a small front and larger rear was ideal for the motor performance.

[@weedeater49cc]

like you will never use half the stuff you learn in high school .. haha he was just useing it

[@HellDraGO]

For the Algo...

[@prashant2622]

What are the quirks and features?

[@onegreenev]

Bottom balance your cells and use a BMS to monitor and shut off but not balance. Have your balance at the bottom end.

[@mjosean25]

I just hope you guys can get to the point of only doing this FULL TIME. There are a lot of youtube channels with trash content and millions of subscribers, but what you guys have here is awesome!!!

[@TheInja]

Much appreciated! 🙌🏽

[@KetansaCreatesArt]

Bigger sprocket helps only if you are peddling manually. If a motor is going to run it, there will be 70% waste of motor rpm. Attach the big flywheel to the motor, and attach a smallest flywheek to the wheel, you will see 10 times speed.

[@dylanfurm5356]

I love these video's! Awesome bike!

[@ryanhudson4015]

i was watching one of your older videos and you mentioned your second channel, will you ever upload there again?

[@TheInja]

Actually posting there tomorrow! Getting it back up and running.

[@locker60]

Why not change the front sprocket to something slightly bigger so as to reduce the size of the rear sprocket

[@charlierosenbusch3007]

As usual thank you for sharing your visions with us. I am thankful that you even share what you do. Having to work full time and do you tube and being married your wife deserves to be spoiled rotten for having to deal with that. Maybe dedicate a couple episodes to her, hint hint. Lol anyways thanks again for being real.

[@TheInja]

Much appreciated 🙌🏽 She's the absolute best

[@Arek_R.]

Pretty sure charging via discharge port will bypass any overcharge protection functions and will lead to a fire...

[@LordCurt]

I was watching individual cell voltages, and it was on track. Unmonitored you are absolutely correct!

[@Arek_R.]

@@LordCurt Fair enough, but still sketchy.

[@JasonWW2000]

@@LordCurt Do you have any idea why they discharged on their own in the first place?

[@TheInja]

@@JasonWW2000 we are still not sure. The only thing we could think of was the bluetooth enabled controller was searching for Bluetooth connection for 2 months, or was activated for some other task we were unaware of it doing.

[@JasonWW2000]

@@TheInja It is such a nightmarish scenario to realize that you could ruin several thousands of dollars worth of batteries just by not using a vehicle or plugging it in for a couple of months. A similar thing happened on the Aging Wheels channel where he left his Wheego electric car outside for a couple of months. The batteries over discharged and were ruined. A new set would cost about $11,000 which is way more than what the vehicle is worth. 😭 kzbin.info/www/bejne/jV6rgZyQf96UaLs Do you or Curt have a way to prevent this from happening again? Maybe have a digital volt meter wired in 24/7 (very low current consumption model) so you can always see the voltage? Or maybe a way to kill power to the BMS? Just keep it on the charger all the time? I wonder how large electric vehicle companies prevent this from happening.

[@thomasmaiden3356]

Where can I read about the motor, controller, batteries, BMS and sprocket company?

[@sujangthapa5782]

Been waiting long for this build video

[@TheInja]

Thanks for the wait!

[@southendparaquest]

However much, Lord Kurt is worth. It isn't enough, guy is a genius haha.

[@francisaugustinetravels]

Awesome sauce! If I ever get my 40-year-old ass to learn how to ride I should pay you gents to build me a bike. Digging the new battery pack and the idea of it being less of a fire hazard.

[@FarmerFpv]

Sick, things a beast. Looking forward to see the end result. Liked & Subscribed.

[@GTA5MODCREW]

Why is nobody sponsoring you and Kurt you both are a good team would be good at customs builds like you’re doing now Top fan from UK 🇬🇧

[@TheInja]

Appreciate it!!

[@MotoMango]

Dude this is such a sick project!

[@madmax2069]

Lmao, I bought an old dirt bike a long time ago, whoever owned it before me put a sprocket on it around that size, maybe a bit bigger. It was slow as hell, but had a lot of torque.

[@wh1techerry]

Can I ask why you didnt just make a slightly bigger sprocket to put on the motor instead of a huge sprocket in back?

[@curtmacneill8703]

It works have needed to be smaller on the front, and it was already about a small as they got

[@davidmeinertdecrepidude]

@@curtmacneill8703 I was looking from a similar angle, there's such an increase in mass with the chain, a lot of wasted energy, also for the extreme size of the rear sprocket, all the torque still concentrated on the small diameter axle for mad stress, heat and weak point... so much easier to deal with from the short end with dramatic rpm adjustment with only 1 or 2 fewer teeth- worth pushing the envelope to save on energy loss, heat and friction. It might even make sense to go to belt and pulley.

[@davidmeinertdecrepidude]

One could also use reduction gearing to get the proper ratio without tons of chain and huge sprockets, I'm imagining weird gyroscopic side effects from current experiments in gearing...

[@cosmic6230]

Holy crap! , I would love to see an electric motorcycle race out on the road or on a track.

[@danielbennett5815]

Love the build. I think it's kool u guys are building a electric motorcycle. I think it was a good idea for you to build a gas motor motorcycle.

[@tommylane8878]

Awesome vid, bruh!

[@christopherthumm4348]

Put an extra thick wire we with the current regulator

[@christopherthumm4348]

I meant to say shunt regulator, put an extra wire as a shunt regulator on the controller

[@jeffflanagan2814]

@The Inja What is the motor you are using?

[@TheInja]

ME1507 from Thunderstruck Motorsports

[@321findus]

That sprocket is a hecking chonker

[@chestnutquinton]

finally... it's been a minute. 🤙

[@TheInja]

👊🏽

[@AICD1999]

What is the tank for now? Trash that and put a beer cooler or maybe ice cream freezer in its place.

[@AJCsr]

Is that a hardened aluminum sprocket ?

[@TheInja]

Yessir!

[@mrcab4797]

Are you selling any old e motorcycle?