View Single Post
  #26  
Old 01-08-2009, 06:12 AM
kinetic's Avatar
kinetic (Steve)
ATMer and Saganist

kinetic is offline
 
Join Date: Jun 2008
Location: Adelaide S.A.
Posts: 2,293
Quote:
Originally Posted by bojan View Post
Use a differential. I found couple of them on scrap yard...parts of old Radio test set
Bojan's right.

Another way is to clutch the second motor.
I did this with high speed DC motor slews on my old RA spur gearbox.
Steppers for tracking, DC motor for high speed slews.
The clutch was 24v from a photocopier.
I'll post some pics if you're interested.

Steve
Reply With Quote