I did the calculation, 670 oz-in/4.6 NM is required to move the axis with one motor. I would normally add +30% for efficiency loss and use a motor in the 850/6 range. With all that, I have a pair of NEMA 34 frame motors that are 420/3. Will I be ok with these or should I go with something bigger? I'm sure that a frame size increase to 34 will slow down my Rapids.
My drives are Gecko 203V, I have several power supplies ranging from 36 to 70 volts available. I upgraded to a Ethernet Smooth Stepper with a high end BOB so I should be able to handle most anything.
Thanks again for your help.
Mike