since i'm converting my first weedy, i'm not sure how to make some of the parts(on the lathe)
my question is, how is the drive spacer(metal part that goes on the shaft between the fly wheel and the prop)stay locked to the shaft? do i use a set screw and grind a flat spot on the shaft? how do the store bought conversions work?
im getting close to finishing my plane and i need to make these parts to get it running

also does the prop washer(between the prop on the nut) have those groves like the drive spacer or is it flat on both sides??