[EricH]

Ya know... There hasn't been anything in the rules about linear actuators being illegal.

However, the integral motors used to power them have been illegal. So, it's perfectly legitimate to build a linear actuator with a KOP motor--or remove the motor from a COTS linear actuator and replace it with a legal motor. Just make sure that if you go the latter route, you have documentation.

Also, look up "leadscrew".


Of course, I don't know the 2013 rules yet, so maybe there will be an allowance for said actuators.