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MacGregor MGB8555HV 54.7Kg/0.12s Brushless HV Servo


The MGB8555HV is a waterproof ultra high speed and torque brushless digital servo, part of MacGregor's range of high voltage servos designed for General use in RC Aeroplanes, Cars & Helicopters.

MacGregor's HV servos are designed with motors and electronics that operate off the direct voltage of a 2-cell Li-Po, Li-Ion, or Li-Fe receiver battery pack. This eliminates the need for a regulator and lowers the chance for a power failure that can cause a catastrophic failure of your model. Also note that the HV servo specs are shown at the higher voltage (8.4V 2S LiPo) but will still operate on a standard 5-cell 6V NiCd, Ni MH battery with a reduction in performance of approximately 10% in speed and torque.


  • High Performance, Standard Size, Multi Voltage Digital Servo
  • High-Precision Steel Gears
  • Full CNC Aluminium Hull Case
  • High Quality Brushless Motor
  • Dual Ball Bearing
  • Long Working Life
  • 25T (Futaba Type) Spline
  • JR style plug
  • Waterproof
  • Suitable for IMAC, Warbirds & Giant Scale Warbirds


  • Dead band: 2µs default
  • Working frequency: 1520µs / 330hz
  • Motor: Brushless Motor
  • Gearset: Steel
  • Spline: 25T
  • Operating Voltage: 5.0 ~ 8.4V
  • Operating Speed (5.0V): 0.20sec/60°
  • Operating Speed (6.0V): 0.17sec/60°
  • Operating Speed (7.4V): 0.13sec/60°
  • Operating Speed (8.4V): 0.11sec/60°
  • Torque (5.0V): 32.6kg.cm
  • Torque (6.0V): 39.1kg.cm
  • Torque (7.4V): 48.2kg.cm
  • Torque (8.4V): 54.7kg.cm
  • Dimensions: 40 x 20 x 39.1mm
  • Weight: 85g
  • Connector Wire Length: 310mm
  • Bearing: 2BB

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£119.99 Each

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