View Single Post
  #41   Spotlight this post!  
Unread 23-07-2014, 13:25
pribusin's Avatar
pribusin pribusin is offline
Uber Alien
AKA: Mike 1
FRC #4004 (M.A.R.S. Rovers)
Team Role: Coach
 
Join Date: Jan 2009
Rookie Year: 2009
Location: Michigan
Posts: 169
pribusin has a spectacular aura aboutpribusin has a spectacular aura aboutpribusin has a spectacular aura about
Re: Linear Actuators

Quote:
Originally Posted by Tom Line View Post
I've been eyeing some of these models for some time:

http://www.servocity.com/html/12v_linear_actuators.html

I would love to have a drop-in electronic shifting option for gearboxes, and some of the lighter-duty short-throw actuators there have enough force to shift under load fairly quickly. They are pricey, however, and I haven't had time to find out what type of motor and shaft they are. I called servo city and they were unable to give me any more info than external dimensions, so someone would have to buy one to find out if any of our motors would mount in the same location.
Tom, We bought some similar to the ones you show in the link, but without the pot feedback. We modified the shaft of a mini CIM to accept the drive gear of the original motor. Works like a charm but still dead slow at 0.5"/sec. Would be ok for small adjustments that require precision and strength but if you wanted a 6" stroke for example, you'd wait 12 seconds - an eternity during a match. Still a very compact unit; easy to use.