Originally Posted by UN4RACING
You can hook it direct. The third wire is polarity.
Now that I think about it more. There is no spark, so the speed control may be converting the DC power in some way.??
I believe that's correct. The reason why you can't use a brushed ESC with brushless motors is because a brushless ESC has to energize each individual section of the stator(that's the sets of windings in the can) seperately in order to make it move, & just hooking it up to power can't do that(& brushed ESC's just turn on & off, really, it's just the frequency of it turning off & on that determines how fast the motor will go). Also, you don't have to spend as much money as BlackedOutRevo suggested, in fact you can find a complete brushless system(motor & ESC) for as little as $180(namely, Novak's XBR speed control & EX-Series BL motor combo, check out prices on those at Tower Hobbies, if they have them in stock yet), should be a GREAT way to get started with brushless, & the motor can also be upgraded later when finances permit(those motors come with a bonded rotor, which is not as efficient as the latest sintered ones, & they also run hotter so you have to be careful about gearing them, but geared right they're still strong & will get you going till you can buy a sintered rotor, then it should be near bulletproof). Brushless motors ARE indeed the future, & at many tracks, they're already being accepted, even in stock classes(we're finally allowing them at my track, so now I can just concentrate on gearing, car setup & driving, definitely much less hassle now)....