Originally Posted by wayne z
If you keep the JS, you should add a piece of flatbar or maybe a turnbuckle with a locknut, as a strut, from the jackshaft plate to the engine, on the PTO side.
This would help elminate movement and stress from the aluminum frame , caused by the considerable torque of both chains working together , under power,to twist the JS off it's axis.
That Jackshaft chewed up my down tube and I had to paint it black. I got steep hills to deal with as well. A fixed ratio on a 49cc engine will mean I'll have to do so pedaling. I'm not much into pedaling. LOL