Futaba S3115 Micro Precision Servo — Micro size precision servo for small electric models  [S3115]

Futaba S3115 Micro Precision Servo overview

The Futaba S3115 is a micro-size precision servo intended for RC-scale electric models where limited space and light weight are priorities. It uses a compact case and nylon gear train to deliver controlled motion for small control surfaces and cyclic inputs in micro aircraft. Installation is straightforward: mount the unit in the recommended servo bay, fit the supplied horn that matches your control linkage, and route the lead to the receiver.

Electrical and mechanical limits are important with this servo. It is designed for battery-powered electric models and can draw significant current under heavy load, so confirm your battery and BEC/ESC can supply the required current during peak demand. The servo is not intended for high-torque applications; excessive load or supply voltage above the recommended value will reduce service life.

Use the supplied horns and mounting hardware, keep operating voltage within recommended limits, and avoid installing this servo in gas, high-power engine models, large gliders, or any airframes that demand high continuous torque; for gear replacement use part number FUTM3404.