Futaba S3174SV Lightweight Programmable Glider Servo  [S3174SV]

Futaba S3174SV - HV S.Bus2 Programmable Glider Servo (21.0g/0.16sec/4.3kg-7.4v)
Price:
£46.45
Brand:
Futaba
Model:
S3174SV
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Compact Servo for Accurate Trim and Control

The S3174SV gives pilots a programmable, high-voltage option for tidy, repeatable control input. Weighing 21.0g, it reduces cabin mass while providing a quick 0.16sec/60deg response and 4.3kg-cm torque at 7.4V suitable for a range of sailplane control duties.

Electronic Flexibility and Mechanical Strength

S.Bus2 compatibility opens up receiver-side programming for endpoint adjustment and direction changes, enabling clean setups without extra hardware. The internal gearing and case are designed for routine flying loads and precision over time.

Specifications

  • Weight: 21.0g
  • Speed: 0.16sec/60deg at 7.4V
  • Torque: 4.3kg-cm at 7.4V
  • Voltage: 7.4V
  • Compatibility: S.Bus2

The S3174SV is a sensible upgrade for pilots wanting a light, programmable servo that keeps control crisp across a variety of glider rigs.

Do I need special leads to use S.Bus2 functions?

S.Bus2 functions are accessed via compatible Futaba receivers and their lead. Standard servo leads will still allow basic control if you are not using S.Bus2 features.

Can I swap this into an older glider without rewiring?

Physical installation is straightforward for many models, but to use programming you will need a receiver or transmitter with S.Bus2 support; otherwise use it as a conventional servo.

What are sensible link ratios for elevator and aileron?

Aim for control throws that keep the servo near mid-travel to maintain authority and smooth response; fine tune with endpoint settings in your S.Bus2 setup.

Is metal gearing fitted inside?

Refer to official specifications for internal gear materials. The S3174SV is designed to provide a balance of durability and light weight for glider use.

How do I protect the servo from moisture and dust?

Use sealed housings or apply light conformal protection in exposed installations, and check connectors after flying in damp conditions to prevent corrosion.

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