S3155 Futaba Slim Digital HS Wing Servo  [S3155]

Futaba S3155 Digital HS Slim Servo
Price:
NZD$96.81
Brand:
Futaba
Model:
S3155
Condition:
Brand New
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Slim Wing Servo Specifications

The Futaba S3155 is a compact digital high-speed servo engineered for wing-mounted control surfaces where depth is limited. Its slim black case and metal gear set provide a balance of light weight and dependable response for small gliders and electric models.

Plan installations to accommodate inrush and operating current: use power sources and wiring that can provide peak amps, minimise lead length and ensure linkages are free to move to prevent binding and excessive current draw.

Packing includes

  • One S3155 Digital High Speed Wing Servo
  • One 1" (25.4mm) 4 arm servo horn (installed on servo)
  • One 1.5" (39mm) 4 arm servo horn
  • One 1.75" (45mm) straight servo horn
  • One 1.4" (35mm) diameter round servo horn
  • Two eyelets
  • Two rubber grommets
  • Two 2x12mm washer head self-threading screws (phillips head)
  • One year warranty

Specifications

  • Item Futaba S3155 Digital High Speed Slim Wing Servo
  • Model Number S3155
  • Material Black plastic case, metal gears FUTM3331
  • Speed 0.16 sec/60° @ 4.8V, 0.13 sec/60° @ 6.0V
  • Torque 28 oz-in (2.0 kg·cm) @ 4.8V
  • Dimensions 30 x 11 x 29 mm (1.2 x 0.4 x 1.1 in)
  • Weight 20 g (0.72 oz)
  • Lead Length 154 mm (6 in)
  • Included Horns, eyelets, grommets, screws as listed in packing includes
  • Compatibility Intended for R/C systems operating at 4.8–6V, not compatible with listed AM transmitters: CONQUEST AM, FG Series (T4FG, T5FGK, T6FG, T6FGK, T7FGK), New Terratop, T3EGX, T3PGE, T2NL, T2LGX, T2FR, T2PK series

For best results in wing bays, use the shortest practical wiring, check linkages for free movement, and select the included horn that provides the desired travel and centring during setup.

How shallow is the S3155's case for tight wing bays

The servo measures 30 x 11 x 29 mm (depth 11 mm), making it suitable for slim wing compartments where depth is limited. Verify clearance for servo horns and linkages before final installation.

What mounting hardware is supplied with the servo

The box includes multiple horn types (4-arm, straight, round), two eyelets, two rubber grommets and two 2x12mm self-threading screws to cover common mounting methods.

How can I reduce heat and strain during prolonged use

Ensure the servo is not overloaded by oversized surfaces, minimise binding in linkages, and provide adequate ventilation in enclosed bays to help dissipate heat during extended operation.

Is the torque rating adequate for larger elevons or flaps

The S3155 is rated at 28 oz-in (2.0 kg·cm) at 4.8V. For large or heavily loaded control surfaces, compare required torque to this figure and consider a higher-torque servo if more force is needed.

What lead length is provided and can it be extended safely

The servo ships with a 154 mm (6 in) lead. Extension is possible, but keep extensions as short as practical and use heavier gauge wire to limit voltage drop for wing-mounted servos.

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