EFLM4025A Power 25 BL Outrunner Motor, 870K Key Features * Equivalent to a 25-size glow engine for sport and scale airplanes weighing 3–5.5 lb (1.4–2.5 kg) * Ideal for 15-size 3D airplanes up to 3.5 pounds (1.6 kilograms) * Ideal for models requiring up to 600 watts of power * High-torque, direct-drive alternative to inrunner brushless motors * Includes mount, prop adapter and mounting hardware * External radial rotor design—6mm shaft can easily be reversed for alternative motor installations * Slotted 12-pole outrunner design * High-quality construction with ball bearings and hardened steel shaft * Quite, lightweight operation Overview The Power 25 is designed to deliver clean and quiet power for 25-size glow engine for sport and scale airplanes weighing 3 to 5.5 pounds (1.4 to 2.5 kilograms), 15-size 3D airplanes up to 3.5 pounds (1.6 kilograms), or models requiring up to 600 watts of power. It's an especially good match for 4- to 5-pound scale airplanes on the market and models such as the Sig Kadet LT-25, Sig Frazer, Lanier Extra 3.25, Global Tequila Sunrise 25 and Great Planes Taylorcraft 20. Product Specifications Type: Brushless outrunner Size: Replacement for 25-size glow engine Bearings or Bushings: One 5 x 14 x 5mm Bearing, and Two 5 x 11 x 4mm Bearings Wire Gauge: 14 Recommended Prop Range: 11x8 to 14x7 Voltage: 12–16.8 RPM/Volt (Kv): 870 Resistance (Ri): .03 ohms Idle Current (Io): 2.40A @ 10V Continuous Current: 32A Maximum Burst Current: 44A (30 sec) Cells: 3S-4S Li-Po or 10–14 Ni-MH/Ni-Cd Speed Control: 40–45A brushless Weight: 190 g (6.7 oz) Overall Diameter: 35mm (1.40 in) Shaft Diameter: 5mm (.20 in) Overall Length: 54mm (2.10 in)