[EricH]

Originally Posted by pollyproof12

in the 2008 manual it never said teams could not use linear actuators. is it considered a motor?

Good question, but the answer is that it is considered a motor if it has a motor. From the 2008 rules:

Originally Posted by Section 8

<R60> Items specifically PROHIBITED from use on the ROBOT include:
 Electric motors and/or servos different from, or in addition to, those in the Kit Of Parts, with the exception of those specifically permitted by Rule <R59>.
 Electric solenoid actuators (note: electric solenoid actuators are NOT the same as pneumatic solenoid valves – the latter are permitted, the former are not).

If it has a motor that is not KOP or otherwise specifically allowed, it is absolutely not legal. Someone did ask in the Q&A about this exact situation, and the response was effectively the one I just gave.

You can have a linear actuator that is powered by a KOP motor, or is an allowed pneumatic cylinder.

[Obligatory note] All rules are subject to change for the 2009 season.