I bought a lathe a few months back and finally got around to making a set of wheels. I wanted to make a set for a carrera COT so I could have that dirt shield look and also for those times when a COT or other pressed on wheel get knocked off center. They turned out pretty good. I think I will make another set and also turn down the knurl on the axel. My first set are drilled to fit over the knurl but it was hard to get the fit I wanted, even so they seemed really smooth.
A bit more info for anyone who wants more...
I turned them down from 6061 aluminum round stock. The set screw is 4-40 and I had just enough room on the shoulder for it. I didn't want to use anything smaller. I was actually going to drill the hole for the set screw right in the middle of the wheel under the tire but the axel didn't look like it would be long enough to reach to the center.


Jim