So I picked this up almost 2 years ago now. Spent quite a bit of time on it and stalled out again. I'm working in a walk up basement workshop so in the end I'll reassemble everything somewhere else. For $200 USD I started out with a 93 CB250 Nighthawk, which in the US only came with 16/18 spoked wheels and drum brakes front and rear. This alone was enough to relegate these bikes to closed course learning and most of them never saw street duty at all. my plan was to adapt the rear alloy wheel from a US spec CB750 Nighthawk. I've had this wheel around a while, had sanded and repainted it, new bearings and new tire, then it sat unused and neglected. First order of business is to adapt the 15mm axle to the 17MM wheel bearings, it's easier for me than cutting the swingarm slots to accept the 17mm axle, which would be way too long anyway. Since the bearings were new there was no sense in swapping them out to fit the axle either. So I turned some steel sleeves with a 1mm wall and a flange on the end from stock I had on hand, not stainless but it hasn't rusted in a damp basement for 6 years either so it's a good alloy choice. Starting out with narrower stock would have been easier, but the stock was free... I'm no machinist, and my machines are best classified as toys, but I'm confident I can get this done.