E-Flite Power 25 Brushless Outrunner Motor, 870Kv

Features

Comparable to a 25-size glow engine for sport and scale airplanes weighing 3–5.5 pound (1.4–2.5 kg)
Ideal for 15-size 3D airplanes approximately 3.5 pounds (1.6 kgs)
Ideal for designs needing approximately 600 watts of power
High-torque, direct-drive alternative to inrunner brushless motors
Consists of install, prop adapter and mounting hardware
External radial rotor style—6mm shaft can easily be reversed for alternative motor installations
Slotted 14-pole outrunner style
Premium building and construction with ball bearings and solidified steel shaft
Quite, lightweight operation

Summary

The Power 25 is designed to deliver clean and peaceful power for 25-size glow engine for sport and scale airplanes weighing 3 to 5.5 pounds (1.4 to 2.5 kgs), 15-size 3D airplanes approximately 3.5 pounds (1.6 kgs), or designs needing approximately 600 watts of power. It's a specifically good match for 4- to 5-pound scale airplanes on the market and designs such as the Sig Kadet LT-25, Sig Frazer, Lanier Bonus 3.25, Worldwide Tequila Sunrise 25 and Great Planes Taylorcraft 20.

 
 


Hardware is consisted of with the purchase of this motor.



Maximum operating temperature level: 220 degrees Fahrenheit.

Adequate cooling is needed for all motor operation at maximum present levels.

Maximum burst present period is 15 seconds. Adequate time in between optimum burst intervals is required.

You will need...
40–45A brushless ESC
3S–FOUR Li-Po or 10- to 14-cell Ni-MH/Ni-Cd
11x8 to 14x7 prop

 Ways to Determine a Design's Power Requirement (68 KB)

Specifications

Type: Brushless outrunner
Size: Replacement for 25-size glow engine
Bearings or Bushings: One 5 x 14 x 5mm Bearing, and 2 5 x 11 x 4mm Bearings
Wire Gauge: 14
Suggested Prop Variety: 11x8 to 14x7
Voltage: 12–16.8
RPM/Volt (Kv): 870
Resistance (Ri): .03 ohms
Idle Present (Io): 2.40A @ 10V
Continuous Present: 32A
Optimum Burst Current: 44A (15 sec)
Cells: 3S-4S Li-Po or 10–14 Ni-MH/Ni-Cd
Speed Control: 40–45A brushless
Weight: 190 g (6.7 oz)
Total Diameter: 35mm (1.40 in)
Shaft Diameter: 5mm (.20 in)
Total Length: 54mm (2.10 in)