KDX 20.0 cells trailbike conversion

General Discussion about large electric scooters and motorcycles and other things with no pedals.
thoroughbred   100 W

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Re: KDX 20.0 cells trailbike conversion

Post by thoroughbred » Dec 26 2020 7:07am

I have started to wonder if using a Motenergy split stator motor would make things easier to reach the 200# powerful dirtbike result utilizing somewhat affordable battery and controller offerings. In my digging I found that DanGT has the same thoughts! :thumb: viewtopic.php?t=53617&start=25

In learning some of the capabilities of the nucular and mobipus controllers, i'm wondering If I could get some "clutch" functionality by playing one controller against the other. Pull a lever or push a button and one controller is now regenerating the other. NOt sure how any of that would work but I will have the ability to use two separate batteries if needed. Lots of ramifications to consider. The throttle, motor temp and halls signal would be the only things shared, potentially. :?

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QuietRush   100 W

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Re: KDX 20.0 cells trailbike conversion

Post by QuietRush » Jan 16 2021 12:52am

Nice to see someone else here on ES wrestling with an eKDX concept - had a B2 years ago and reckon the lighter weight chassis of a 125-200cc makes a reasonable candidate for a registerable ride. Just considering an offer for a reasonably priced 1991 donor bike at the moment, so am enjoying the fact you're thinking this through out loud. Have ridden rekluse modified Husky WR360/TE510, so know the attraction of having some clutch control to feather the power for a steep climb.

thoroughbred   100 W

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Joined: Apr 11 2018 6:18pm
Location: virginia

Re: KDX 20.0 cells trailbike conversion

Post by thoroughbred » Jan 26 2021 10:06am

These guys got closer with the denzel gearbox unit in a KX chassis. The clutch and shifter functions are still really crude. I don't speak the language but sort of understand what they are getting at in the video:

https://www.youtube.com/watch?v=lmtPCi1 ... IdzBSmJSFw

thoroughbred   100 W

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Joined: Apr 11 2018 6:18pm
Location: virginia

Re: KDX 20.0 cells trailbike conversion

Post by thoroughbred » Feb 15 2021 7:53pm

The problem with fitting a clutch comes from trying to package cylinders of various diameter and length into a finite space. The countersprocket position is set in stone. I'm having real trouble coming up with a way of having a jackshaft arrangement incorporating a clutch.

Using an existing gearbox solves the countersprocket positioning and clutch integration. The problems are with how to drive the clutch basket with the motor, especially since the clutch is bathed in oil. You are sort of stuck with trying to fit a skinny but long motor into the space abandoned by the crankshaft. Now you have a big motor bulge sticking out the left side of the bike.
http://www.mortchmotor.com/index.php?ro ... TXen__nHaA

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