Getting Jiggy with Eccentric Sheaves

A post on a few forums by Nick Dunhill on his build of a Rhymney Railway R class on preparing the eccentric sheaves couldn’t have been timelier.

I am just at that point so the night before last I made up a similar jig from a couple of bits of wood that I had on the bench and having consulted the GA for the length of the sheave I marked up and drilled a hole for the pin (a 0.8mm drill bit). Finally, I filed and soldered up the first sheave. Last night I managed a couple more.

Gladiator J6 Eccentric Sheaves Sizing Jig
Inside Motion Eccentric Sheaves – for Gladiator J6
Inside Motion Eccentric Sheaves – for Gladiator J6