Re: Modified Drive and Clutch gears
When my son was BMX racing, some of the racers would put valve grinding compound in the crank and wheel bearings and ride for miles laping and adjusting. Flush out and replace with machine oil. I don't know how much was gained but it makes sense if there's burrs on gear teeth and they're making contact, wire wheeling and lapping would be a good thing. I would like to get a thread going on the best grease for those gears. I'll search the forum archives. McMaster Carr and other industrial suppliers sell different clutch and brake materials. It can be carefully shaped into our clutch pucks. I know the stock ones usually need to be trimmed or sanded so they float a little better.