Quick Overview

This is the Futaba BLS251 Brushless Digital Heli Rudder Servo. BLS251 is designed specifically for helicopter rudder operation.

FEATURES:

Equipped with a Brushless motor that lasts longer and operates at a lower temperature than Brushed motors
Compatible with gyros that use a narrow 760 pulse width
Samarium Cobalt magnets and dual ball bearings
Same power consumption and centering as Digital servos equipped with Brushed motors
Standard size

INCLUDES:

Futaba BLS251 Brushless Digital Heli Rudder Servo , with accessories

SPECS:

Torque @ 4.8V: 47 oz-in / 3.8kg.com Speed @ 4.8V: 0.06 sec / 60 degree Dimensions: 40.0 x 20.0 x 36.8mm (1.6 x .8 x 1.5" )

Supplied as standard with the superb GY611 gyro, the BLS251 is a dedicated ultra high performance tail rotor servo, which is also compatible with the GY601 gyro.

• Futaba brushless servos offer greatly improved response time over other servos.
• Significantly increased life span. Futaba brushless servo motors will last more than five times longer
than servos that include brushed motors!
• Lower operating temperatures. As there aren’t any brushes on the motor armature, no sparks are produced when the servo motor is in operation.
• Thanks to the motor design, the outer coils act as a heatsink dissipating any heat that does occur. As an added benefit, Futaba is able to increase the torque and speed of these servos without increasing case dimensions.
• Vibration & Shock. Unlike servos that used brushed motors, the brushless servos from Futaba are less susceptible to the effects of vibration and/or shock.
• Additionally, the inertia of standard motors also facilitates the effects of vibration on the servo’s performance. By eliminating this inertia in a brushless servo, Futaba has reduced this possibility.
• Power consumption. Brushless servos consume approximately the same amount of power as their digital counterparts.
• Centering. Centering is the same as it is with the digital servos. The dead band is also equal to the digitals.

Miscellaneous
• Increased resolution for smoother operation.
• New gear treatment and materials for added endurance and longevity.
• Samarium Cobalt magnets for better performance and increased holding power.
• Dual ball bearings.

N.B. This servo must be used with a high frequency gyro.

Specifications

Weight: 49g
Size: 40x20x36.8mm
Speed: 0.06s
Torque: 3.8kg
Voltage: 4.8v