Futaba BLS251 Brushless Heli Rudder Servo

Tower Stock# LXUVU4  •  Manufacturer Stock# BLS251
Futaba BLS251 Brushless Heli Rudder Servo (large view)
Notes from our tech department:
This is the Futaba BLS251 Brushless Digital Heli Rudder Servo.
Designed specifically for helicopter rudder operation.

***Compatible with the Futaba GY520, GY601, GY611 and GY701 gyros.***

This servo can produce high-current draw from your batteries.
If using NiMH or LiPo batteries, make sure they are capable
of delivering sufficient amps.


Equipped with a Brushless motor that lasts longer and operates at a
lower temperature than Brushed motors
Samarium Cobalt magnets and dual ball bearings
30% faster response times, smoother operation.
Same power consumption and centering as Digital servos equipped with
Brushed motors
Metal gear
Compatible with Super Narrow Pulse of (760Ás) drive.
One-year warranty


Futaba BLS251 Brushless Digital Heli Rudder Servo with universal
connector, 0.83" (21mm) diameter round horn pre-mounted
1.8" (45mm) diameter round horn
1.2" (32mm) diameter 6-point horn
1.5" (38.5mm) 4-point horn
Servo mounting hardware


Installing in helicopter and plugging into gyro


Torque @ 4.8V: 53 oz-in (3.8 kg-cm)
Speed @ 4.8V: 0.06 sec
Dimensions: 1.6 x 0.8 x 1.5" (40 x 20 x 36.8mm)
Weight: 2.1oz (59.5g)


This servo will NOT work with the GY240 or the GY401 gyros.

jxs 6/25/07
updated 11/09/07kh
updated jpg 2/14/08
updated rda 4/2/08
updated jpg 8/13/09

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