Du-bro Products

Du-Bro Full Dual Servo Arm – Pull-Pull Servo Arm for Large RC Aircraft (Futaba 25T / JR 23T)

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SKU: DUB3344
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$14.20
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Du-Bro Full Dual Servo Arm – Heavy-Duty Pull-Pull Servo Arm for Large RC Aircraft

The DU-BRO Full Dual Servo Arm is designed for large RC aircraft using pull-pull servo systems that require strong, precise, and dependable control movement. Built for giant-scale airplanes, IMAC aircraft, aerobatic models, and other high-performance RC applications, this servo arm delivers the strength, accuracy, and durability serious pilots demand.

The dual-arm design allows your pull-pull linkage system to move in a smooth, straight, and in-line motion. This helps reduce binding, improves linkage geometry, and ensures both sides of the pull-pull system operate evenly for more precise control response.

Constructed from durable glass-filled nylon, the Full Dual Servo Arm provides excellent strength while remaining lightweight. Included 4-40 swivel ball links and mounting hardware help create a secure, low-slop connection for dependable performance flight after flight.

Features

  • Designed specifically for pull-pull servo systems
  • Ideal for giant-scale and large RC aircraft
  • Smooth in-line movement helps reduce binding
  • Improves pull-pull linkage geometry and precision
  • Durable lightweight glass-filled nylon construction
  • Includes heavy-duty 4-40 swivel ball links
  • Four mounting positions for throw adjustment
  • Low-slop linkage performance
  • Excellent for rudder and elevator applications
  • Proudly Made in the USA

Specifications

  • Servo Arm Type: Full Dual Pull-Pull Servo Arm
  • Material: Glass-Filled Nylon
  • Control System: Pull-Pull
  • Distance from servo center to end mounting hole: 1.5645" (39.75mm)
  • Weight: 11 grams
  • Includes 4-40 swivel ball links and mounting hardware
  • Four linkage mounting positions

Variant Compatibility

  • #3344 – Futaba Version
    Fits Futaba 25T spline servos
    Spline I.D.: .210"
  • #3345 – JR Version
    Fits JR/Spektrum 23T spline servos
    Spline I.D.: .220"

Ideal Applications

  • Giant-scale RC aircraft
  • IMAC and aerobatic airplanes
  • Large RC warbirds
  • Pull-pull rudder systems
  • Large elevator pull-pull setups
  • High-load control surface applications

Why Use a Full Dual Servo Arm?

A full dual servo arm helps maintain equal pull-pull cable geometry while reducing linkage side-loading and binding. This results in smoother movement, more accurate control response, and improved reliability during aggressive aerobatic maneuvers and high-load flight conditions.

Package Includes

  • 1 × DU-BRO Full Dual Servo Arm
  • 2 × 4-40 Swivel Ball Links
  • Mounting Hardware

Modeler Tips

  • Ideal for aircraft using pull-pull rudder systems
  • Outer mounting holes provide greater control throw
  • Inner holes increase servo torque and precision
  • Always verify spline compatibility before installation
  • Maintain equal pull-pull cable tension for best tracking