Eccentric strap for crank driven pump, Aveling roller.

[Aveling&Porter_5499]

Hi

I need a bronze(?) eccentric strap to fit the eccentric on the crank shaft, that the pump con rod is connected to.

It is for an Aveling roller, based on a 6 ton machine, from 1904.

Having measured the eccentric on the end of the crank, it is 1.380" wide, and across the circular diameter at the edges it is 5.500" though the eccentric is concave and whilst I don't have a micrometer big enough to measure the middle diameter, it looks about 1/8" reduced in the middle, so perhaps 5.250" - 5.300" or so. The strap therefore has a convex internal profile.

Has anyone got something or have any ideas?

Many thanks

David.