Just for giggles I set up my machine to where it stalled and then backed it off. Now this is a rough set up and I have NOT gone back and tuned the drives so that would change things as well. Given that I was able to get x(x/c) axis up to 17m/min V with 450mm/sec^2 A; Y axis was gotten to 11m/min V with 350mm/sec^2 A and Z to 7.5m/min V with 250mm/sec^2 A. Let's just say that is a bit scary in speed.
-Michael