Futaba S3115 Micro Precision Servo - micro-size servo for RC electric models  [S3115]

Overview of the Futaba S3115 micro servo

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

Pay attention to electrical and mechanical boundaries for safe operation. Designed for battery-powered electric models, the servo may draw significant current under heavy load, so confirm your battery and BEC/ESC can handle peak demand. Avoid placing this servo in applications that require sustained high torque or exposure to overvoltage, as these will shorten service life.

Fit the supplied horns and mounting hardware, maintain recommended voltages during use, and avoid installing this servo in gas or high-power engine models or in any aircraft that demands continuous high torque; replacement internal gears can be ordered as FUTM3404.