Hi wallyscr,
Not sure what you mean by power transfer. Are you are referring to the high speed input shaft to the gearbox which has a rubber "tyre" that makes contact with and is driven by the infinitely variable spinning friction wheel? If so, yes the rubber "tyre" is somewhat hard now and has lost its grabbing ability, and as such, is very likely not transferring anywhere near its as-new capacity in speed and torque.
However, like yours, my Shiremaster is a real beast, sometimes a little hard to fully control.
And yes, I do need to procure and replace this Tyre (P/N -187) I am sure it would make a big improvement. Then hang on!
Last edited by RodP; 15/12/21 10:33 PM.