HobbyStar 40A Brushless Aircraft ESC, 3A BEC


HobbyStar aircraft ESC's are deisgned to deliver reliable power at an affordable price-point.  High grade components deliver extremely low internal resistances to maximize efficiency, reduce operating temps and deliver the maximum power to your aircraft.  A full-featured ESC that can be used out of the box with simple calibration, yet also contain multiple adjustable parameters to dial in to your specific application.  Program using your transmitter or quickly make changes using the optional program card.  Built-in BEC for supplying your receiver and servos without the need for a separate battery.



  • Built-in BEC
  • Extremely low internal resistance
  • Power arming protection prevents motor from being accidentally turned on 
  • Automatically cuts power to motor if signal is lost
  • Supports high RPM motors
  • Fully programmable
  • Ultra smooth and linear throttle curve


  • Output: 40A continuous, 50A burst
  • Input Voltage: 2-4S LiPo, 5-10 cell Ni-XX
  • BEC output: 5V/3A (linear)
  • Weight: 36g
  • Dimensions" 52x27x11mm

Programmable Options:

  • Brake setting (on/off -- default: off)
  • Battery type: (Ni-XX/LiPo -- default: LiPo auto detect)
  • Low voltage cutoff setting (2.8V 50% / 3.0V 60% / 3.2V 65%  -- default: 3.0V)
  • Factory default setup reset
  • Timing settings (Auto 7-30° / Low 7-22° / High 22-30° -- default: auto)
  • Acceleration (Soft / Normal / Hard -- default: soft)
  • Governor mode (RPM off / Heli Mode 1 / Heli Mode 2 -- default: RPM off)
  • Motor rotation (forward / reverse -- default: forward)
  • PWM/Switching Frequency (8KHz / 16KHz -- default: 8KHz)

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