RE: [CAD_CAM_EDM_DRO] Stepper speed

Easy question, hard answer. It all depends.

Some of the variables in my limited experience are:
Motor size - smaller frame sizes seem to go faster than bigger
Rated Motor Voltage - Lower voltage = lower inductance and better top speed
Motor Torque - All else being equal the motor with more torque will poop out
at a higher speed
Drive voltage - Higher voltage = higher rpm. Mariss tells me this is linear.
So if you get 1000 rpm on 24 V you get 2000 rpm on 48 V
Specific Driver - some just seem to do a better job of getting max RPM out
of a motor
Driving Software - Again, some seem better. Partially related to an even
pulse train and the pulse widths, partially related to the burden that is
put on the computer to generate the pulses.

I seem to remember someone telling a story on the list about running a
pancake stepper to such a high speed the rotor was super sonic when it
disintegrated. So some combinations can go pretty fast.

I haven't seen any BDI info on the web, just the disk in the mail.

Tim
[Denver, CO]

> -----Original Message-----
>
> Under the circumstances that we are driving them, i.e., Gecko
> or Camtronics,
> how many RPM will a stepper turn? In this instance I am
> interested in
> driving a prop in a model boat.
>
> Also where did the information on the BDI problem get posted,
> I have received
> nothing.
>
> Thanks,
> bill
>
> FAQ: http://www.ktmarketing.com/faq.html
>