Futaba BLS151 Brushless Standard Air Servo

Tower Stock# LXWYU3  •  Manufacturer Stock# BLS151
Futaba BLS151 Brushless Standard Air Servo (large view)
Notes from our tech department:
This is the Futaba BLS151 Brushless Standard Size Digital Servo
for Aircraft Usage.


Standard size and weight for use on a variety of aircraft control
At least five times longer lasting than brushed servos
Dual ball bearings and Samarium cobalt magnets
Smoother operation and greater resistance to jolts and vibration
Same power consumption as brushed digital servos
One year limited warranty through manufacturer


Futaba BLS151 Servo with 0.83" (21mm) round horn, 1.8" (45mm) round
horn, 1.25" (32mm) 6-point horn, 1.5" (38.8mm) 4-point horn, four
rubber grommets, four metal eyelets, four 1.5 x 12mm mounting
screws and instruction sheet


Installing in aircraft, connecting linkage and connecting to


Power Supply: 4.8V ONLY
Speed: 0.15 sec/60 @ 4.8V
Torque: 133.3 oz-in @ 4.8V
Size: 1.57 x 0.79 x 1.37" (40 x 20 x 34.8mm)
Weight: 1.59oz (45g)


The BLS151 is designed for high torque/high speed applications.
Very high current drain is normal at startup. Always use a 4.8V
NiCd battery for best performance.

For full performance of digital servos use them only with FM, PCM and
FASST systems. Do not use digital servos with AM systems.

jxs 7/27/09

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