if anyone has any ideas for anything commercially available, I need something in the 10-20amp range, possibly like what could be used on a blimp. If not any schematics would help. I would prefer brushless, but I realize the complexities of making a brushless motor contoler work at all let alone the added compexity reversablity. a reliable brushed unit is acceptable. does any company build custom ESC's? finding a unit with zero delay is my biggest problem with commonly available car units