Sidewinder Jerry
Well-Known Member
Here I'm going to assume you're running a 14t sprocket to the rear freewheel. So 28÷14×18=36. Therefore in first gear your reduction is 36:1 not 40:1. With the 30ish cc engines around 36:1 is the minimum reduction one should use with minimum pedal assist on level ground for take offs unless the rider and bike build total weight is under a 150 lbs. So unless you're a very lite person eventually you're going to burn the clutch up without being able to pedal assist.the pedaling assy was destroyed. the main bearings were exposed to sand or something. i put a phone with a speedometer in my pocket, and rode it around for a while. my top speed was 35, and my average speed was 28. i was cruizing most of the time, i went down the odd hill, thats prolly where i got my 35 mph from.
So perhaps you should get another bike, rear rack your engine setup and get or build a shift kit.
What I see you as is someone with raw natural talent who if you stick with this forum could become one of the great builders