Bonehead RC

BRUSHLESS MOTOR - An electric motor that has stationary wire coils mounted on the inside of the motor can. A rotor (i.e. magnet) spins in the center of these coils. The coils are energized in sequence by the ESC, creating a magnetic field that 'pushes' the rotor, causing it to rotate as needed. Since the coils are stationary, this eliminates the need for brushes to transfer power to a rotating part (as the brushes transfer power to the comm in a brushed motor), hence the name 'brushless'. Brushless motors tend to be more efficient, quieter, smoother, and more powerful than brushed motors, as well as requiring virtually no maintainance. Compared to brushed motors, brushless motors excell at low to medium load applications, but are comparable at high load applications (such as crawling or pulling). They have a higher power band than brushed motors, so try gearing down a few teeth on the pinion (i.e. go from a 16T pinion to a 14T pinion) than you would with an equivelent brushed motor. A brushless motor reduces EMI (ElectroMagnetic Interference) compared to brushed motors, which helps reduce glitching. Brushless motors are available in a variety of sizes, and are usually rated in 1/2 turns (6.5, 7.5, 8.5, ect) or by kv (kilovolt). They come in 2 basic flavors - sensored or sensorless. Most brushless motors run happily at a temperature around 150* to 170*. Never run a schottky diode with a brushless motor (just in case you're wondering).