Futaba BLS251SB S.Bus2 Rudder Servo - Precision Brushless Unit  [BLS251SB]

Futaba BLS251SB - S.Bus2 Programmable Helicopter Rudder Servo (60g/0.06sec/3.8kgcm/4.8v)
Price:
£85.65
Brand:
Futaba
Model:
BLS251SB
Condition:
Brand New
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Rudder Control with the Futaba BLS251SB

Serious RC helicopter flyers can use the Futaba BLS251SB S.Bus2 Programmable Helicopter Rudder Servo to refine tail handling. The brushless motor and S.Bus2 connectivity deliver adjustable control and reliable performance for advanced setups.

Responsive Movement and Adequate Torque

The BLS251SB offers a response time of 0.06 seconds per 60 degrees at 4.8V for immediate rudder action. Its 53 oz-in (3.82 kg-cm) torque provides the strength needed for steady tail control during precise flight maneuvers.

Built to Last in Tail Assemblies

Metal gearing paired with dual bearings reduces backlash and supports smooth continuous rotation under stress. The compact servo size helps with tidy installations in tight tail sections.

Specifications

  • Modulation: Digital
  • Torque: 4.8V: 53 oz-in (3.82 kg-cm)
  • Speed: 4.8V: 0.06 sec/60°
  • Weight: 2.12 oz (60.0 g)
  • Dimensions: Length: 1.58 in (40.0 mm), Width: 0.79 in (20.0 mm), Height: 1.46 in (37.0 mm)
  • Motor Type: Brushless
  • Gear Type: Metal
  • Rotation/Support: Dual Bearings

The Futaba BLS251SB is aimed at pilots who want programmable, responsive rudder control and long term mechanical stability in their helicopters.

Can I use this servo with a gyro on the tail?

Yes, the servo works with most tail gyros; use S.Bus2 or standard PWM connections as required and tune gyro gain to match the servo speed and torque for stable performance.

Is the weight suitable for small electric helicopters?

At 60 grams, the servo is relatively lightweight and fits many small to mid sized electric helicopters, but verify fit and balance before final installation.

What maintenance does a brushless servo need?

Brushless servos need less motor maintenance than brushed types, but you should still check gears, bearings and mounting hardware periodically and keep connectors free of corrosion.

How do I set travel limits with S.Bus2?

Connect the servo via S.Bus2 to a compatible transmitter or flight controller and adjust end points and travel limits through the radio menu for precise mechanical travel without trimming rods.

Are there common upgrades for this servo?

Typical upgrades include stronger servo horns, higher quality pushrods and improved mounting plates to reduce flex and improve control feedback in high demand applications.

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