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General Mach Discussion / Slave axis problem

« on: October 31, 2010, 09:59:22 PM »

I am converting an old pantograph burning machine to a cnc router/plasma. I originally was driven by a rack gear on one side of the gantry. I added a rack on the other side so it would not rack when using the router. The problem is i couldnt get the same diameter pinion gear as the original so it is slightly bigger on the one side so the gear ratio is slightly different. i thought that when you set up each drive it would work as long as the perimeters was right for each drive, but when slaved it only gives the number of pulses for the x drive. Is there any way to fix this or am i going to have redesign my whole rack setup to match both sides?