Futaba FUAS4149 Servo Gear Replacement for BLS253 & BLS451  [FUAS4149]

FUTABA BLS253 BLS451 SERVO GEAR SET AS4149 EBS3345
Price:
AUD$29.76
Brand:
Futaba
Model:
FUAS4149
GTIN:
4513886304583
Condition:
Brand New
Write a review

Impact on control and tuning

This gear set is listed as a replacement option for Futaba BLS253 and BLS451 servos, matching the part numbers referenced in the title. Replacing worn gears helps recover accurate mechanical centering and repeatable motion, which supports predictable tuning and setup on your model.

The overview covers compatibility, swap expectations, and how a fresh gear train contributes to reliable input response. AS4149 and EBS3345 are cited as associated part identifiers; confirm those codes against your servo's service documentation prior to purchase.

Specifications

  • Item: Servo gear set
  • Material: Not specified by manufacturer
  • Model Number: FUAS4149, AS4149, EBS3345
  • Compatibility: Futaba BLS253, BLS451

Store a spare gear set with your field kit and validate part numbers before fitting to ensure correct spline alignment and smooth gear mesh for consistent control response.

Does swapping gears help eliminate servo jitter during tuning?

Yes — worn teeth and excessive backlash contribute to jitter; installing matched replacement gears reduces mechanical slack and helps the servo follow radio inputs more accurately.

Will new gears change how I set subtrim and centering?

After replacing gears, verify mechanical centering and then adjust subtrim as required; small changes may be needed if the gear train was previously allowing off-center play.

Can gear replacement affect servo speed or smoothness?

Replacing damaged gears removes binding and slop that can slow or roughen motion, so you should see smoother travel though the electronic speed rating remains unchanged.

Are AS4149 and EBS3345 required references for tuning records?

They are listed part references associated with the FUAS4149 kit; recording the part codes can help track maintenance but do not alter electronic tuning parameters.

Should I retest control throws after gear replacement?

Always recheck and fine-tune control throws, as mechanical centering and reduced backlash can slightly change perceived control travel and precision.

Any recommended bench checks post-installation?

Manually operate the output spline through its full range to check for smoothness, then power at low voltage to confirm there is no stalling before returning to normal setup and tuning.

Copyright © 2008-2026 rcjaz.com.au All rights reserved