Quote Originally Posted by Jonathan View Post
The inertia of my design for RM2510 is equivalent to 1250mm of RM2510 ballscrew, hence much better acceleration is obtained than if the screw was rotated.
But what is much better acceleration? I use 1.5m RM2010 and happily achieve 4000mm/sec^3 at 16.5m/min with just Nema23 4Nm(video posted in my Strike thread) I don't run at that because its harsh as *$&£ but if a standard setup can achieve that I have to wonder why bother increasing it further when its already excessive?

Surely all this talk about critical speed and higher acceleration is, in some cases, misleading given practical real world evidence that flys in the face of it?