Alright, so at the moment, I'm currently trying to find a way to control the Linac, and finding a controller for the job is proving to be tricky. I was hoping to simply use another of the BotBitz 30A controllers to control the Linac, a little excessive for something that should be drawing no more than 7A, but at the moment my current (heh) concern is having a controller that can handle the 18.8V from the battery, as well as the fact that it would be a spare controller for the drive system should anything go wrong.

My problem now though is that there doesn't seem to be any way to get the BotBitz ESC's before January, and I'm trying to find alternate controllers for the actuator. So far, I've found a few controllers on Hobbyking that should be able to handle the Amps, but I'm a little concerned about the size of the battery they'll be accommodating.

TURNIGY 30A BRUSHED ESC: https://hobbyking.com/en_us/turnigy-...ushed-esc.html

HobbyKing X-Car 45A Brushed Car ESC: https://hobbyking.com/en_us/hobbykin...d-car-esc.html

20A Brushed ESC - Turnigy TZ4 AWD/Drift Spec: https://hobbyking.com/en_us/20a-brus...rift-spec.html

I still have the option to use the micro switches and the servo should I run out of time, and it continues to seem like a good option, but I'm mostly posting to ask if A: Are the controllers above actually suitable to use given my current setup (18.8V battery)? And B: In the likely event that they aren't, are there any brushed ESC's that are available right now that could be used with this machine?