Product overview
The STEAM MD3220-1000KV is a red brushless motor for the AK420 and 380/400/420/450-class competition helicopters. Its third-generation construction combines precision CNC-machined 6061T6 aluminium alloy, large bearings and internal active cooling fins. Hand-wound 0.86mm single-strand copper wire provides high slot fill. The motor uses a 32mm-diameter, 20mm-thick stator with a 10N/10P slot/pole arrangement. It weighs 172 Grams, with a 40.8 mm outside diameter and a 54.5 mm body length. Mounting hole spacing is 25mm.
Rated at 1000KV RPM/Volt, the motor supports LiPo batteries up to 6s. Maximum continuous ratings are 85 Amp and 1750 Watt; peak ratings are 105 Amps and 2260 Watts, each for 5 seconds. Motor timing spans 5deg~12deg, with a recommended setting of 5°, while drive frequency spans 8kHz~32khz. A 60A electronic speed controller is recommended for everyday use, and an 80A controller enables maximum performance. The shaft diameter is 5mm, motor shaft length is 21mm and overall shaft length is 90 mm.
