Re: Torque vs. speed

> These figures suggest much better performance of the new motor, but
> something does not seem right. The EAD chart shows a torque of zero
> at "3K half steps per second".

Let me guess, this zero torque point comes at the end of the linear scale, shortly before the torque begins to degrade gradually to higher step frequencys?

If yes, you´ll find this in all steppers, it´s the point where resonance kicks in. However, this only poses a problem for fullstep drive, half step or microstep will straighten out this problem.

Cheers,
Johann