configuring spindle speed

[Freddy Bastard]

Hello all,

This morning, I've updated my PCNC to the latest mach3 update (PCNC3Rel1.8b). I try to calibrate the spindle the best I can but found it very hard. By playing with the XMLTweak program and a good digital tachometer, I'm near to get it but can't figure out how to fine tune the spindle speed. Right now, If I set the speed to 4500 RPM, I get 4450 on the tachometer. If I set 4000 RPM, I get 4050, and I got alway 50 RPM more than what I ask.
Anybody got it?

[keen]

Quick reply Freddie - I think the max rpm is 4450 - well the label says that on mine by the pulleys.