Gator RC 1.5" Aluminum Servo Arm 25T Futaba Style Spline – 4-40 Thread Red
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Gator RC 1.5" Aluminum Servo Arm 25T Futaba Style Spline – 4-40 Thread Red
The Gator RC 1.5" Aluminum Servo Arm is a precision CNC-machined control arm designed for Futaba-style 25T spline servos. Featuring a durable red anodized finish and a 4-40 threaded linkage hole, this servo arm provides a rigid, reliable connection for giant scale, IMAC, aerobatic, sport, scale, gas, and turbine-powered RC aircraft.
Designed with a 1.5" (38mm) center-to-center control length, this servo arm helps deliver accurate control geometry while reducing flex commonly found in plastic servo arms. The included servo arm screw and precision-machined aluminum construction make it an excellent upgrade for high-performance aircraft applications.
Key Features
- Fits Futaba-style 25T spline servos
- 1.5" (38mm) center-to-center control length
- 4-40 threaded linkage hole
- Precision CNC-machined aluminum construction
- Red anodized finish
- Includes servo arm screw
- Rigid design helps reduce flex compared to plastic servo arms
- Ideal for giant scale and aerobatic aircraft applications
Why Upgrade to an Aluminum Servo Arm?
Aluminum servo arms provide greater rigidity than standard molded plastic arms, helping maintain accurate linkage geometry and consistent control response under load. This is especially beneficial on larger aircraft where control surface loads are significantly higher.
The Gator RC servo arm is designed to provide a secure connection between the servo output spline and linkage system, helping reduce slop and improve precision throughout the flight envelope.
Specifications
| Brand | Gator RC |
| Servo Spline | 25T Futaba Style |
| Thread | 4-40 (American Standard) |
| Material | CNC Aluminum |
| Color | Red |
| Total Length | 50mm (1.97") |
| Center-to-Center Length | 1.5" (38mm) |
| Spline Bore Diameter | Approx. 2.5mm |
| Maximum Width | Approx. 13mm |
| Body Width | Approx. 8mm |
| Maximum Thickness | Approx. 5mm |
| Minimum Thickness | Approx. 2.5mm |
Dimensional Highlights
- 50mm overall length
- 1.5" (38mm) center-to-center linkage length
- 13mm maximum width
- 8mm width at linkage end
- Approx. 5mm maximum thickness
- Approx. 2.5mm minimum thickness
- 4-40 threaded linkage hole
Spline Identification Guide
- Red: Futaba 25T
- Gold: JR / Spektrum 23T
- Blue: Hitec 24T
Applications
- Giant Scale RC Aircraft
- IMAC Aircraft
- Precision Aerobatic Aircraft
- Sport Aircraft
- Scale Aircraft
- Gas-Powered Aircraft
- Turbine Aircraft
Installation Tips
- Confirm your servo uses a Futaba-style 25T spline before installation.
- Apply threadlocker (Loctite) to metal-to-metal fasteners where appropriate.
- Keep all linkage hardware tight and free from excessive play.
- Verify full servo travel and control surface movement before flight.
- Use quality 4-40 linkage hardware for best performance.
- Follow the aircraft manufacturer's recommended servo arm geometry.
Package Includes
- 1 × Gator RC Aluminum Servo Arm
- 1 × Servo Arm Screw