On my reeded 50cc I used a 1000 spring, and in my very insane 70 I used a 1500 I think with a decent amount of preload.
Did u see my other insane moby shifter mod?
I added a notched shaft with a paddle shifter so it could have fixed gears. Was super fun.
Will be more fun once I put a kit on it
https://www.mopedarmy.com/forums/read.php?7,4261967,page=1
