yeah, I know the compatibility is probably gonna be a pain in the neck, but I don't have my calipers here, so I can't really do any worthwhile measurements beforehand. I had brought it to my LBS to get track ready, and the best he did was put a 3/8" coaster brake axle in. I can feel a little play in it now, so I'm thinking the 10mm standard will fit fine. I could just buy all the parts, but I figure if someone has a hub lying around that's trashed, it would be cheaper for me, and at least I know everything is there that I would need. Assuming the hubs are the same width. I never thought I would ever say this, but I really miss my vernier calipers right now. I'm such a nerd...