Futaba HPS-A703 – S.BUS2 High-Voltage Standard Size Airplane Servo
Extreme Power, Precision & Reliability for Giant Scale Aircraft
The Futaba HPS-A703 is a high-performance, standard-size HV brushless servo designed for demanding applications, particularly giant-scale aircraft and aerobatic models where exceptional torque, speed and reliability are essential.
Powered by a custom high-power brushless motor and featuring a robust all-aluminum case, the HPS-A703 delivers an impressive 66 kg/cm of torque at 7.4V while maintaining a fast 0.12 sec/60° response.
Fully programmable and compatible with Futaba S.Bus and S.Bus2 systems, this servo offers precise control and flexible setup options. It can also be programmed directly from a PC using the Futaba CIU-2/CIU-3 USB adapter (sold separately).
The HPS-A703 is also recommended as a high-performance upgrade for the BLS172SV and BLS177SV.
Key Features
- Designed for: All-purpose giant-scale aircraft
- Motor: Custom high-power brushless motor
- Technology: Programmable High-Voltage digital servo
- Compatibility: Futaba S.Bus & S.Bus2 systems
- PC Programmable: Compatible with CIU-2 / CIU-3 USB adapters (sold separately)
- Gears: Stainless-steel final gear
- Case: Full aluminum upper, middle and bottom case sections
- Recommended upgrade: BLS172SV / BLS177SV
- Spline: Standard-size Futaba specification
Performance
- Speed @ 6.6V: 0.13 sec/60°
- Speed @ 7.4V: 0.12 sec/60°
- Torque @ 6.6V: 61 kg/cm
- Torque @ 7.4V: 66 kg/cm
Dimensions & Electrical Specifications
- Dimensions: 40.5 × 21 × 39.4 mm
- Weight: 82 g
- Rated Voltage: DC 6.0–7.4V
- Operating Voltage: DC 4.8–8.4V
The Aerobertics Touch
When you're flying a large-scale aerobatic model, servo performance is not something to compromise on. The HPS-A703 combines serious power, brushless-motor technology and rugged construction in a compact standard-size package.
At Aerobertics, we select equipment with demanding RC pilots in mind — because when precision matters, every control surface counts.
