Low, here is my idea I came up with going through the garage looking for spare parts
My idea...
Leave the OEM wheel and sprocket on it and use a spare #35 60 tooth sprocket and measure it and bolt it centered onto that OEM wheel with four 5/16" bolts
I have a 99cc engine sitting out in the garage that I am going to use for this. I am going to sit it on top of that rear wheel crossover brace and a brace I fab up forward of that one just ahead of the rear wheel
The clutch is 12 tooth and the rear sprocket would be 60 tooth, the rear wheel is 10" and the rpm is 3600 which would give me a top speed of 21.6 miles per hour
The hardest part is going to find dead center on both sprockets before bolting them together... any ideas? I was going to use 2 vice grips and a digital caliper and slowly make adjustments as I clamp then together then hit the drill press.
Whats your thoughts on the set up I have in mind here??
Would like to use a smaller engine, but this one is on hand and free to use