2old
Much easier for the shift kit with the engine up front. I have a cvt rear rack mount with the same engine that works well, but hard for me to get my leg over the engine at my age.
My other cvt rear rack build has the low profile cage engine with the big bore kit is not a problem for me.
This shifter set up works nice and is super fun to ride and shift. I really like the thumb throttle with the dual brake lever.
My next build may be a 99cc hf engine with a pedal start and shift kit using a primary belt drive with a spring loaded tensioner-clutch. This will be in my stretch cruiser.
Want the pedal start so the engine can be stripped of the tin and rewind starter etc. Will need a second manual belt tightner on top of the belt for pedal starting.
My first sketch shows a left side rear chain drive, or it could be a belt drive. Then after looking at my sketch, it could be a shifter bike by using the $15. Staton 3 groove free wheel adapter with the $5. 3 prong sprocket added to the right side jack shaft free wheel bearing.
This was my first sketch, but it gets the idea across, I hope!! lol.
Ron