Is it not? I'm sure I saw somewhere in the specs that it's reversible... might be thinking of the hacked Botbitz ones though, thanks for the heads up there! That was the plan too, getting some roughly 16:1 gearboxes made up and giving brushless drive a shot!

And ah, that's what the C number means! Thanks for the help there, I think I know what to look out for now! I'll have to rethink my strategy a little here and rework things a bit too, may scrap brushless drive if it ends up being a bit of a pain...
Just out of curiosity, what would happen if I used an 85A ESC where a 100A would be recommended, would it fry it completely?