Project Squirrel

[Ocracoke]

To address your questions directly:

1) I can't really answer this one, I don't use drill motors per se (I use a pair of Gimson motors with matching hubs). I might suggest either some threadlock fluid or a nyloc nut though. I can't visualise how you've got them mounted. I definitely know the Featherweight version of Luna-Tic uses drill motors in this fashion though, might be worth asking cjsowry.

2) I'd swap the + and - around on the motor going backwards. I was forever having this issue with The Honey Badger after a dry build so I use a pair of matching connectors on both wires to the motor. If I find it is going backwards, I can swap the connectors over. I have a feeling you may need to swap them at the motor terminal though as you use EC5 connectors (so de-solder and resolder them). There is also the very hacky move of cutting the wires in the middle and then soldering across (so the wire from the connector on the left would be soldered to the wire going to the motor on the right for example).

3) I don't believe it is achievable in the setup you have at the moment. A channel can only really have three states; Up/Stop/Down. As you are sharing the signal between two speed controllers, they'll always either both go forwards or backwards. You need to have the speed controllers on separate channels.

Early attempts at The Honey Badger came across this problem. I ended up using the side to side channels instead of the up/down channels (as one would stick since it was for helicopters) until I found a controller that had sprung up/down sticks on both sides (so tank controls).

I think some controllers do support channel mixing as I looked this up when designing my Beetleweight but otherwise, it would be a Sabretooth or similar controller (which I know you've already tried) that you'd need. I must confess though, channel mixing is something I am pretty new to myself so I would defer this to someone more experienced.