E-Flite Power 25 Brushless Outrunner Motor, 870Kv

Functions

Equivalent to a 25-size glow engine for sport and scale planes weighing 3–5.5 pound (1.4–2.5 kg)
Suitable for 15-size 3D planes as much as 3.5 pounds (1.6 kgs)
Suitable for models needing as much as 600 watts of power
High-torque, direct-drive alternative to inrunner brushless motors
Includes install, prop adapter and installing hardware
External radial rotor style—6mm shaft can quickly be reversed for alternative motor setups
Slotted 14-pole outrunner style
High-quality building and construction with ball bearings and solidified steel shaft
Quite, lightweight operation

Summary

The Power 25 is developed to provide clean and quiet power for 25-size glow engine for sport and scale planes weighing 3 to 5.5 pounds (1.4 to 2.5 kgs), 15-size 3D planes as much as 3.5 pounds (1.6 kgs), or models needing as much as 600 watts of power. It's a specifically great match for 4- to 5-pound scale planes on the market and models such as the Sig Kadet LT-25, Sig Frazer, Lanier Additional 3.25, International Tequila Dawn 25 and Great Planes Taylorcraft 20.

 
 


Hardware is included 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. Appropriate time between maximum burst periods is required.

You will need...
40–45A brushless ESC
THREE–4S Li-Po or 10- to 14-cell Ni-MH/Ni-Cd
11x8 to 14x7 prop

 How to Figure out 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
Maximum 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)
Overall Size: 35mm (1.40 in)
Shaft Size: 5mm (.20 in)
Overall Length: 54mm (2.10 in)