Plastic washers

Class 14 wheel
Originally uploaded by Phil_Parker.

Bit of a handy hint here: If you want to check things on a chassis that uses Romford crank pins, don’t solder the washers on, use bits of cable insulation. That way you can remove the rods easily during the fettling stage.

I had to force these bits down some tweezers (the tapered bit) to expand them a little but after this they slipped on and hold well.

The chassis can now be run under power to see where the tight bits are. A little reaming of the bearings freed everything up. Those frames are very tight on the back of the wheels though at 12mm apart (measured in the inside faces). Some slightly narrower spacers will be etched for production runs to allow builders the choice.