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Standard digital servo, particularly suitable for large scale aircraft, jets or helicopter cyclic.this HV servo is very resistant, with aluminium housing and metal gears, and develops a colossal torque of more than 40kg under 2S LiPo.servo delivered with cross and circle rudder pedals + screws and shock absorbers (ref 128-O0002005).
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Technical data
- Torque : 29,5 kg-cm (6.0V), 36.5 kg-cm (7.4V), 40,4 kg-cm (8.2V)
- Speed : 0.13 s (6.0V), 0.11 s (7.4V), 0.10 s (8.2V)
- Weight : 75.45g
- Dimensions: 40 x 20 x 40 mm
- Supply voltage: 4.8 - 8.4 V DC Volts (2S Lipo)
- Implosion width/ Operating frequency: 1520μs / 333hz
- 2 bearings
- Coreless Japan motor
- Sprockets : Chrome-Titanium Alloy
- Aluminum housing
Dimensions :

Differences between HV777 and HV777A+ :
| Product | HV777 | HV777A+ |
| Torque | 28 kg-cm (6.0V) 36.5 kg-cm (7.4V) 38 kg-cm (8.2V) | 29.5 kg-cm (6.0V) 36.5 kg-cm (7.4V) 40.4 kg-cm (8.2V) |
| Speed | 0.14 s (6.0V) 0.11 s (7.4V) 0.10 s (8.2V) | 0.13 s (6.0V) 0.11 s (7.4V) 0.10 s (8.2V) |
| Weight | 81.4g | 75.45g |
| Dimensions | 40 x 20 x 45 mm | 40 x 20 x 40 mm |
| Operating Voltage | 4.8 ~ 8.4 V DC Volts | 4.8~8.4 V DC Volts |
| Working Frequency | 1520μs / 333Hz | 1520μs / 333Hz |
| Dead Band | 0.0008ms (Default) | 0.0008ms (Default) |
| Bearing Type | 2* Ball Bearing | 2* Ball Bearing |
| Motor Type | Japan High Quality Coreless Motor | Japan High Quality Coreless Motor |
| Gear Type | Metal Alloy Gear | Metal Alloy Gear |
- Thickness in mm (Servos)
- 20
- Torque in kg.cm (servos)
- 40.4
- Speed sec / 60° (servos)
- 0.1
- Pinions (servos)
- Metal
- Bearing (servos)
- yes
- Technology (sevos)
- Digital
- HV (servos)
- yes
- Weight in g (servos)
- 75.45
128-S0011007
4710150350271
4710150350271
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