MG5921HV 20.3Kg.cm/0.12s High Voltage Servo
- High Performance High Voltage Coreless Digital Servo
- High Torque and High Speed
- High-Precision Metal Gears With Hard Anodising
- Dual Bearing Support
- Metal Centre Case to act as a Heat Sink
- JR Style Lead and Plug
- 25 Tooth Spline (Futaba Style)
The MG5921HV is part of MacGregor's range of high voltage digital servos. This high voltage, high torque servo has been designed for use with large scale & aerobatic aircraft.
Battery chemistries such as Li-Po, Li-Ion, and Li-Fe have become very popular within the RC community. They are the standard for powering electric motors and have also gained popularity as receiver battery packs. The issue is the output voltage of these batteries is higher then the previous standard 4 - and 5-cell NiCd and NiMH packs, 4.8V and 6V respectively. The higher voltage is not an issue with the receivers but can be for the servos. Many servos will not operate at these higher voltages for very long before burning out the motors or electronics.
To get around this issue modellers have had to use a regulator to drop the voltage to an acceptable operating range for their servos, usually around 5 to 6 volts. The addition of a regulator adds a component that, should it fail, can cause the loss of a model.
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.
|Working frequency:||1520µs / 330hz|
|Operating Speed (6.0V):||0.152sec/60°|
|Operating Speed (8.4V):||0.123sec/60°|
|Stall Torque (6.0V):||17.25 kg.cm (239.55oz/in)|
|Stall Torque (8.4V):||20.32 kg.cm (281.89 oz/in)|
|Dimensions:||40.5 x 20.5 x 36.5mm /1.59 x 0.80 x 1.43in|
|Connector Wire Length:||265mm (10.43in)|
MG5921HV Metal Gearset
MG5921HV Top Case (incl. Label)
Heavy Duty Servo Arm Set (25T) (White)
1.25in Aluminium Servo Arm M3 (25T) (Purple)
1.5in Aluminium Servo Arm M3 (25T) (Purple)
2in Aluminium Servo Arm M3 (25T) (Purple)
3in Aluminium Offset Double Servo Arm M3 (25T) (Purple)
4in Aluminium Offset Double Servo Arm M3 (25T) (Purple)