Moped Army

This is what my father and grand father used to do when they would race on the frozen lakes in Illinois.

They used pan head screws, drilled holes thru the lugs and screwed the screws thru from the inside of the tire, then they used an smaller old tire with no tread left, cut the beads off and used it as a liner to keep the screws from potentially popping the tube

Old school tech from two crazy polocks

I have to try to find the photo of them on the ice with their bikes.