http://forums.usfirst.org/showthread.php?t=16333
Hi,
I noticed your question in the Q&A forum, and found the official answer “lacking in details”.
Since you are rookies I thought I’d make it clear: you CAN use linear actuators, if you remove the built in motor and replace it with a legal 2011 FIRST motor.
This could save you some time in fabrication.
Good luck!
-Leav
(Team 2630, The Thunderbolts, Israel)