EFLM1305 Park 400 Brushless Outrunner Motor, 920Kv Key Features * Slotted 12-pole outrunner design * Prop adapter (EFLM1923) and gold-plated connectors included * Motor mount included * Excellent motor for small 3D and scale park flyers weighing 10–20 oz (280–560 g) * Replacement for Speed 370 and Speed 400 applications Overview The great performance and small size of this engine makes it perfect for small 3D and other park flyer models. The external rotor design eliminates the need for a gearbox, saving you valuable weight to get the maximum performance out of the model. Product Specifications Type: Brushless Size: Replacement for 370/400 Bearings or Bushings: One 3.175 x 7.94 x 3.6 Bearing, and One 3.175 x 9.525 x 3.97 Bearing Recommended Prop Range: 9x7 to 11x4.7 Voltage: 7.2–12 RPM/Volt (Kv): 920 (rpms per volt) Resistance (Ri): .10 ohms Idle Current (Io): .70 @10V (no load current) Shaft Diameter: 1/8 in (3.17mm) Overall Length: 1.15 in (29mm) Weight: 56 g (2.0 oz) Overall Diameter: 1.10 in (28mm) Diameter: 1.1 in (28mm) Continuous Current: 10A Maximum Burst Current: 13A Cells: 6–10 Ni-Cd/Ni-MH or 2–3 Li-Po Speed Control: 10–20 amp brushless