Examining the problem, I spotted that the freer axle was 58.5mm long, which the other measured 62. How?
The axle eneds didn't look that special either, some polishing required.
Supporting each axle on a fine foam sanding block, which helpfully cleaned it as I worked, the wheelset was spun using an electric screwdriver, which I gently attacked the end with a sanding stick to smooth it, and round the corners a little.
The long axle was reduced in length by 2mm using a fine file and then repolished. Still not entirely happy, a 3mm diameter bit was spun in the axlebox as best I could. Finishing with a countersink bit ensured there weren't any burrs.
If all this sounds crude, it is. Opening out the bearing would have been a lot easier if it wasn't fitted - my version doesn't allow for a nice squre opening out, but it works.
Soon, the long axle ran perfectly, but the short one mostly worked, but sometimes didn't. A 1mm long piece of copper stuffed in each axlebox removes most of the sideplay, and improves things a lot.
I suppose this is all part of the "fun" of buying a second hand kit. There is some satisfaction in solving the problems after all!
1 comment:
Oh I here you. Did a bit of off the cuff 3D modelling and knocked up a 009 slate wagon, of slightly better calibre than PECO. I had some wheels from an old project but ordered more, oh they were "orrid" is was like I had glued them in. Changing the design of the axle box's. Now "hotwheeels" I can't keep them on the work bench.
Phil
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