High-Torque Futaba S3305 Standard Servo for Steering and Throttle  [S3305]

Key Details for the S3305

The Futaba S3305 is a standard-size servo built with metal gears and a 3-pole motor, intended to provide reliable high-torque performance for steering or throttle duties in hobby cars and boats. It uses the standard Futaba J-style connector and is covered by a one-year warranty.

Futaba specifies NiCd packs for this model and notes that NiMH or LiPo setups can increase current draw. If you choose to use other battery chemistries, confirm that your battery, BEC, and receiver wiring can supply the peak amps required to prevent voltage loss during heavy servo loads.

The mechanical footprint matches most standard mounts and includes two ball bearings to limit shaft play. Metal gears enhance durability under load and the supplied horn options allow straightforward matching to common linkage layouts. Mounting hardware is supplied with the servo.

When fitting the S3305, pick the horn that gives the throw and mechanical advantage you need and ensure the power delivery system can handle the servo's peak current to get reliable control response in both cars and boats.