How to build a electric mini motorcycle based on a kx65 frame and a hub motor kit

[@kmt2323]

Hello I saw your wonderful video. How many amps is the breaker you are connecting from your battery pack? Did you use the 48V breaker for the 72V battery?

[@leitian7328]

Hi, the breaker is a 300A breaker -- but it’s rated at a lower voltage so it’s not perfect, it’s kinda difficult to find a good breaker at a reason price….

[@bransonlariscy4660]

What kind of power do you get out of the hib motor, how does it compare to say a 138v3? also can you provide a link to the hub motor?

[@leitian7328]

I was doing around 10 hp out of the hub motor. It can do more. It's lower power compared to 138v3 for sure. No links, the hub motor was a custom batch and discontinued, sorry.

[@mansonmason6119]

Whats the hub motor size ??? dropouts,watts,,turns,please??????

[@leitian7328]

I don't have those motors anymore, so I cannot measure them for you. Sorry. Rated power is 2000W.

[@MotoAlias]

If you moved the speed controller under the subframe you'd have more room for a larger battery

[@leitian7328]

You are not wrong for sure! I did that on a couple of my other builds

[@thebesttipsforyou82]

Whats the link to the hub motor?

[@leitian7328]

It was a custom build batch for this swinger. Sorry it's not available any more after the batch was sold out.

[@mxs8102]

Hi there, is the kit available anywhere else than Facebook marketplace? Also what KX65 model year would you recommend best for this sort of conversion?

[@leitian7328]

Hi, I live in the bay area (San Jose). Contact me and you can pick up in Norcal or Socal. The KX65’s throughout the years are basically the same, with pre-02 having shorter forks and shorter swingarm. I built both, I don’t think there is really that much a difference. If you are set on a mini motard usage tho, then you can put pre-02 forks on there, for the shorter length

[@spankdammit]

Hey sir I’m in Hayward I’d love to buy a kit let me know when I can

[@MountainDaughter]

@@leitian7328also interested if you can source them still

[@leitian7328]

@@MountainDaughter Unfortunately I sold out the batch I made. Moving on to different projects so I decided I won't be starting a new batch. Sorry!

[@thatfreeamericantv923]

I need one of these kits!!!!!!!

[@oldmanebikes8392]

Do you or will u be selling kits again? I don't see it on FB anymore if not what is the exact model numbers for hub and controller thanks great build

[@leitian7328]

Sold out sorry ;))

[@simple6786]

Could this work on other bikes?

[@leitian7328]

Hi, the general principles apply. But the hub motor dimensions will bolt on only to a kx65 swingarm; it’s not a direct bolt on for any other bikes, since each bike’s swingarm design is a little different

[@roodick85]

Yes they usually have similar drop outs for the wheel. I think 170mm

[@Paul-em9yb]

Hi, what are the specifications of the hub motor? Great build btw

[@leitian7328]

It’s a custom hub motor from QS motor. Nominal rating is 72v 2000W. I was pushing 72v 100A through it with no issues whatsoever.

[@gamingprotocol8871]

@@leitian7328 what parameters u set for this motor in fardrive controller to push 100a? I have votol controller with this same qs 2000w motor i would like to do that as urs.

[@leitian7328]

Usually the app for the controller has a setting like “current limit” or something. Just set that to 100A and you’re set

[@bigpowerhouse11]

Do you think the KX65 could handle QS motors 12" 5000W 72V motor? Or what about their 12" 3000W 72V motor?

[@leitian7328]

That’s a tricky question. The swingarm itself is quite beefy, so I think the mechanical structure might be fine. However, those motors won’t be a direct fit (like mine), so you’d have to modify the swingarm extensively, especially if you want a rear brake.

[@leitian7328]

So during the modifications-- e.g. if you cut the swingarm a lot, or weld extension tubes, the structure integrity might compromise, then it might or might not handle it any more

[@poet9155]

hi, if i have a 125 can i do this but get a bigger hub? thank you

[@leitian7328]

I mean, anything is do-able with fabrication;))

[@darianvoicau]

Hey man, i want to ask what would you chose for stunt and city rideing with a pitbike like this converted to electric between hub and mid drive motor? i mean i know that a hub motor is 20kg and i don't know how that could efect the stunt part because it would be much heavyer in the back but it would help with more room for battery pack to fit in the frame and it would have more range, but i want to know what you would chose and wich one is better for stunt and city rideing

[@leitian7328]

Yeah you summarized pretty well --- if you do steppes, bunny hops, jumps, burnout drifts etc. etc., having a mid drive will provide you with the right handling characteristics. You do lose a bunch of space with mid drive, so it is harder to package the battery pack. If I gonna do a stunt bike, I'd say doing mid drive is the right way to go

[@atomp153]

Do you still have this qs motor kit available?

[@leitian7328]

Yep still have 1 motor available

[@jacobdiehl5253]

Where can I get this kit??

[@leitian7328]

Hi, here is the marketplace post for the kit: facebook.com/marketplace/item/4314698808591865

[@biix5616]

I like i have dirt bike 60v 50a 1500w but i want upgrade 72v 🙂

[@spankdammit]

Where can I buy the adapter plates bro?

[@leitian7328]

They were custom made ... and sold out. Sorry lol

[@snowfreak207]

I want this kit

[@leitian7328]

It was sold out, sorry

[@ericthompson165]

how fast?

[@leitian7328]

62mph is the fastest I have gone on a flat road

[@racerx2095]

They look like they just stick to the pavement pretty nice