I've seen a number of replies to my inquiry, but before I read them I'll post some photos of the wheels and motors in question. Here's a photo tour of some of the pieces.
First the 252 motor that I need to get running.
First of these two is the known good wheel set. The second is the patched together substitute. The red spot on the inside of the gear is the Bondo patch to the spacer.
A question this raises in my mind - does the gear need to be mechanically attached to the wheel, or is pressing them together on the axle sufficient ? I had to pry it off the bad wheel.
Here is my other 252 motor. It has good sets of wheels, but I still have electrical work to do. I did a lot of measurements of the wheel spacing to see if that might give me clue to my problem. It didn't. So that's a digression from the story so I'll present them in a separate post.
You can see that the wheels line up well.
Here are some individual wheels. First is a spoked wheel with a cast on spacer that is about 1/16". The second photo is a pair of solid wheels from a type 6 motor. Note the spacer cast the wheel. It looks as if the gear has a square hole to fit over this spacer.
The gear is from a type 5 motor on a 250 series engine. Note the square spacer on the inside. I suppose that is to go against the frame, but why is it square ? The other side is the wheel side after I filed it flat. It had fragments of the wheel casting attached after I pried it off.
After all this messing around with wheels, I discovered that my binding problem may be entirely from a different cause. I'm going to sop here and write about that in the next post.
