For a mini-weasel I would only need to power a micro-rx and 2 micro-servos. I'm surprised that there aren't voltage regulators lighter than ESC's, since the ESC already includes the voltage step-down circuit... I could probably design my own regulator using Surface-Mount parts that wouldn't be any heavier than the ESC (and hopefully quite a bit lighter), but I don't have the funds to get the pcb boards built (maybe if I were selling them it would make sense, but not just to get one for my own use). It just takes a little SOIC regulator chip and some passives, I think... I wonder if I could just solder wires on the leads and glue it to a little piece of foam *ponder* I'll have to look into that...

-Rick