Tempest 2814-850Kv Brushless Motor

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Tempest Motors are designed to provide the optimum blend of Performance, Reliability and Affordability.  These motors produce impressive power with rugged durability at a price that makes them one of the best values available in RC Power Systems.

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For many years modelers had to choose from two ends of the power system spectrum:  Cheap motors made with inferior quality components or top-quality motors, made from the best materials, but with a price tag that was out of reach for many pilots.  The Tempest line of Brushless Motors provides the best of both worlds, giving high power output at an affordable price that will not break the bank!

Unlike most other motors available today, that provide virtually no performance information, Tempest motors include full Performance Data charts. These charts use actual testing data, from a motor testing dyno, measured at multiple input voltages using dozens of different propellers, so you know exactly what performance to expect for your model.

Also available for every Tempest motor is a full range of replacement parts including Prop Adapters, Cross Mounts, Shaft Kits and Bearing Sets.


Included with every Tempest 28mm series motor is a complete accessory kit that includes the following items:

  • Aluminum Cross Mount with mounting screws
  • Threaded Prop Adapter with mounting screws
  • Machined Aluminum Prop Washer
  • Standard Hex Prop Nut
  • Machined Aluminum Spinner Cone Prop Nut
  • A set of 3 Female Bullet connectors to match the ones already installed on the motor
  • A set of 3 pieces of black Heat-Shrink Tubing
  • Hex wrenches to fit the screws in the motor

CLICK HERE for the Performance Data Chart

Tempest 2814-850Kv Specifications
Stator Diameter 28.0 mm (1.102 in)
Stator Thickness 14.0 mm (0.551 in)
Number of Stator Slots 12
Number of Magnet Poles 14
Motor Wind 20 Turn Delta
Motor Kv Value 850 RPM per Volt
No Load Current (Io) 1.39 Amps @ 10 Volts
Motor Resistance (Rm) per Phase 0.092 Ohms
Motor Resistance (Rm) Phase to Phase 0.061 Ohms
Maximum Continuous Current 32 Amps
Max Continuous Power (3-cell Li-Po) 355 Watts
Max Continuous Power (4-cell Li-Po) 475 Watts
Max Continuous Power (5-cell Li-Po) 590 Watts
Motor Weight 107 grams (3.77 oz.)
Outside Diameter 35.4 mm (1.394 in.)
Shaft Diameter 5.00 mm (0.197 in.)
Motor Body Length 32.4 mm (1.276 in.)
Overall Shaft Length

54.8 mm (2.157in.)

Motor Timing 5-10 degrees or Auto
PWM Frequency 8-16 KHz
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MPN TEM-2814-850
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