3Racing 3RAC-H2520/BK Race Setup Futaba 3.0mm Arm  [3RAC-H2520/BK]

3RACING Futaba Single Arm 3.0mm V2(servo gear hole to ball end hole length:20mm)- Black - 3RAC-H2520/BK
Price:
USD$5.70
Brand:
3Racing
Model:
3RAC-H2520/BK
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Race-Oriented Steering with 3Racing 3RAC-H2520/BK

The 3Racing Futaba Single Arm 3.0mm V2 is tailored for tuners and racers seeking a firmer connection between servo and steering linkage. Designed to fit Futaba-style splines, the black anodized arm provides a 20mm centre-to-ball dimension and a 3.0mm section to reduce compliance under load. Its construction supports consistent feel through repeated runs and setup adjustments.

Setup Notes for Competitive Use

For setup work, expect reduced flex compared with thinner horns, which helps preserve steering geometry under high loads. This arm is well suited to drivers who tune throw and endpoint settings to extract consistent handling from their chassis.

How does this arm affect steering tuning?

Because of the 3.0mm stiffness and 20mm reach, steering inputs become more direct, allowing finer tuning of throw and dual-rate settings for predictable lap-to-lap behaviour.

Is this suitable for competitive lightweight classes?

Yes. Its reduced compliance helps maintain alignment in lightweight cars, but always verify spline compatibility and check for any binding in tight servo linkages.

Recommended checks after installation?

Centre the servo, confirm free travel, and recheck endpoint calibration. Small changes in arm leverage often require subtle transmitter adjustments to retain optimal handling.