Futaba S-U400 Standard Servo (ERP) 36g - 0.13sec, 7.9kg  [FP-S-U400]

Why Futaba S-U400 is a go-to servo for control precision

The Futaba S-U400 standard servo offers a compact, dependable solution for model control. Its 0.13sec actuation and 7.9kg torque make it suitable for steering and auxiliary duties where crisp response and steady holding are needed. The light 36g weight helps keep your model balanced without sacrificing performance.

Benefits for tight turning and responsive steering

Fast travel plus firm torque means the S-U400 translates wheel inputs into clean, predictable movement. It is a solid choice for drivers who demand nimble handling from touring cars and 1/10 scale buggies, giving confident feedback through the steering linkages.

Handling demands: quick action with reliable strength

A 0.13sec speed gives timely corrections in close racing, while the 7.9kg torque handles heavier steering loads and tougher track sections. Its modest mass at 36 grams keeps rotating mass low and supports sharper steering dynamics.

Practical setup advice for long service life

Mount the servo securely to reduce flex, check centring during installation, and use a stable power source to prevent voltage drops. Routine inspection of linkages and horns helps sustain precise control and avoids premature wear.

For hobbyists wanting a balanced standard servo, the Futaba S-U400 offers dependable speed and torque in a lightweight body. It performs well across a variety of RC roles, from tight handling to reliable auxiliary control.