I have heard of sheaves having been built-up at a machine shop, but how economical that is I couldn't tell you. All I know is that you can sure wreck belts when the sheaves have grooves.........is it all worth it on a 510IJ Good luck, B.
If built-up and returned by a capable shop, the pulley's should outlast the origional. If they just weld 'em up with plain wire, then sure, they'll wear out faster. A hardface alloy wire should wear a long time. Jeremy
