your right jonathan, i meant a helli ESC in govenor mode... iv switched it off, i read somwhere that it would hold revs under diffrent loads, sadly, no joy on that one, its just a slow wind up to speed to stop all the power stripping gears betwean the motor and the main helicopter rotor... maybe it will hold revs when it is flat out?

on the brighter side, my motor has enough power to drill 10mm holes through 40mm of alli without getting particularly hot :) the ESC gets a bit warm though but nothing to drastic... fingers crossed

that motor you have would be wasted as a router !! it may even be over kill for milling alli on your 3 axis... id stick that one on a bike and start doing wheelies up and down your street and use a similar size as mine to mill alli, i really cant see my 3 axis out performing a 2000w spindle

ps: you get extra points for getting your holes wrong on a CNC :) yeeeee Haaaaaawww !!!