--- In masterchassis@..., "hhpja" <phil@...> wrote:

> About 90% of the 4mm jigs we have sold have been 1/8" axles with 1.5mm
> ends, which is the size of the bush that fits over the 12BA screw which
> passes through the wheel to act as a crankpin. This is the standard
> size for Alan Gibson, Ultrascale and Mike Sharman. The old style
> Romford, now Markits, where you solder a thick brass washer onto the
> crankpin is 1mm. The new Markits one is I believe 1.67mm (can anyone
> confirm?)


Hi Phil/all,

One suggestion for those using both sizes may be to use 1/8" axles
with 1mm ends, and to sleeve the ends with tubing to bring the
diameter upto 1.5mm as required. The following site sells hard
Stainless Steel tubing with the following dimensions:

O.D. 1.49mm
I.D. 1.0mm

http://finneyandsmith.co.uk/finneyandsmith/Brass.htm

Does this sound a workable idea, or am I missing something basic?

p.s. I'll try and contact Markits tomorrow to check the dimensions of
their crankpins and bushes and report back the findings.

Best Regards,
Brian Tulley