Monday, August 03, 2015

Motors and Speed Controllers for the Alien X

Ebay has been my choice for brushless motors and electronic speed controllers (ESCs) as the vendors there are a little cheaper than the Chinese warehouse sites and you can find a few good deals from US warehouse sellers.

I chose 4 motors and 4 ESCs from a single vendor in California.  The motors are 2212 class (motor diameter and stator height - 22mm diameter and 12 mm height).

4 - 2212 class brushless motors from Ebay
The specs for the motors are as follows (copied directly from the auction):

Features:
  • High Torque
  • Enduring high-temp above 180℃
  • Excellent-efficiency stator design
  • High-quality construction with ball bearing and hardened steel shaft

Specification:
  • KV: 920
  • RPM: 10212
  • Diameter: 28.0mm
  • Length (w/shaft): 38mm
  • Shaft Diameter: ะค3mm
  • Stator Dimension (mm)
  • Weight: 62g
  • Thrust : 670g
  • Max Power: 180w
  • Input Voltage: 7.4V - 11.1V
  • Propeller: GP10*4.5 / APC 9X6 SF / APC 10X4.7
Packages:

  • 4 x MT2212 Motors (2CW+2CCW)
  • 100% Brand New
The ESCs came from the same vendor and are pretty generic looking.



They have the following specs:

Features:
  • Based on Simon K firmware, further optimized to the perfect drive performance.
  • Highest efficiency 100% N-FET design.
  • Highest accuracy with Crystal Oscillator (Temperature won't affect the PWM operating range like other cheap ESC's).
  • No low voltage cutoff, because any cutoff in a multirotor = crash.
  • No over temp cutoff, because any cutoff in a multirotor = crash.
  • Super high refresh rate, no buffering of the input signal, resulting in more than 490Hz response rate.
  • 16KHz motor frequency, giving fastest response of the motor, and quietest operation as well (no 8KHz squeal).
  • Super simple, foolproof operation! Nothing to program other than the throttle range.
Specifications:
  • Continuous Current: 30A
  • Burst current (10S): 40A
  • Li-xx Battery (cell): 2-3
  • Dimension (L*W*H): 35mm x 23mm x 8mm
  • Weight wires Included: 25g
  • BEC Output: 3A/5V
Package Includes

  • 4 x Simonk-30A ESC
  • 100% Brand New



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