I have been reading and doing calculation and I am still not satisfied with what I should get from Keling. I have a 100-130lb gantry that I want to mount 2 steppers on either side to drive it, rack and pinion. I want to cut at 3-500 IPM and rapid at 1000IPM at least. I was thinking about 2 of the NEMA 34 670oz/in motors. I would like to do it with no reduction if possible. What do you think?