Blue Bird BLS-H51B (All New Design)

The Powerful BLS-50B just got better!!

Smoother.Precision.More Reliable & Efficiency

Powerful Brushless Servo :BLS-H51B

Available Here

★Soft Start Protection
★Over Voltage Protection
★Low Voltage Protection
★Locked Rotor Protection 
★Temperature Protection


Application / Suitable
Priority for 3D Airplane, Jet & 1/5、1/8th Monster / Crawler / Off-road Car & Helicopter.
Electrical Specification (Function Of The Performance) 
Torque At 6.0V 44.7 kg-cm / 620.8 oz-in
Torque At 7.4V 53.1 kg-cm / 737.6 oz-in
Torque At 8.4V 57.5 kg-cm / 798.7 oz-in
Speed At 6.0V 0.12 sec / 60°
Speed At 7.4V 0.10 sec / 60°
Speed At 8.4V 0.09 sec / 60°
Protection Mechanism
Soft Start Protection Soft start to neutral position.
Over Voltage Protection Over 9.0V drive the protection mode and 8.4V return to normal mode.
Low Voltage Protection Lower than 4.0V, drive the protection mode and 4.5V return to normal mode.
Locked Rotor Protection Stall in 5 sec, output torque goes down.
Temperature Protection Overheat 85 degree C, drive the protection mode and down 75 degree C
return to normal mode.
Power Supply
Operating Voltage Range 4.5V ~ 8.5V ( 4 ~ 6 Cell Ni-MH or 2S Li-Poly / 2S Li-Fe)
Control Specification 
Control System Digital Controller / AD 12-Bits ( 4096 Steps )
Dead Band Width 0.001ms ( 1us )
Mechanical Specifications
Ball Bearing Dual, Steel
Gear All Steel Alloy Metal Helical Gears
Outside Case Full One-Piece Aluminum CNC Casing
Motor High Efficiency Japan Brushless Motor
Horn / Gear Spline 25 Teeth ( Same as F-Type )
Physical Specifications
Dimension (mm) 40.5 x 21 x 38.5 mm / 1.59 x 0.83 x 1.52 in
Weight (gram) 83.0 ± 1 grams / 2.93 oz