High performance motors for multicopter and foam models. Hand-wound brushless external rotor motors with special multiple winding for optimum efficiency and optimised cooling. All engines in this series excel with their enormously high torque and show their full performance potential in direct drive. The design principle of the ULTRA motors results in a compact motor housing with an optimum power-to-weight ratio.
Right-hand thread = Direction of rotation seen from the thread: CCW
Left-hand thread = Direction of rotation seen from the thread: CW
Graupner, based in Kirchheim, Germany, was founded by the family Graupner and, up until March 2013, operated under the third Graupner generation from Stefan Graupner. In March 2013, the company was purchased by the manufacturer of Graupner HoTT RC Transmitter Systems. Graupner covers a large RC assortment including RC Cars and Trucks (GM), Helicopters, Airplanes, RC Electronics (HoTT 2,4GHZ), Chargers, RC Glow-Powered Motors (OS) as well as a large variety of Electric-Powered Brushless Motors. Graupner supplies around 2000 retailers throughout the world.
