Have I got the maths right?

[Robin Hewitt]

I can't see the webpage you're referencing

I didn't actually point to the page because graphs seem to be secret and I don't want them to remove it. I've now printed out the bit I wanted, page 26, so here it is...

http://www.motioncontrolproducts.com...pperMotors.pdf

2:1 down on 2.5mm screws means you need 8 rps out of the motor to get a lowly 1 cm/s on the G00.

If you wanted 1" per second do you still have the torque to avoid lost steps?
Pig in a poke without the graph, but I think I am stuck with the "suck it and see" approach because the information simply isn't there