Blue Bird BLS-M72B V2 – High-Torque Magnetic Helical Gear Servo

Application

1/5th Buggy / Monster / Crawler, Off-Road Car & 3D Aerobatic Airplane, Turbojet

Torque @ 6.0V

56.2 kg-cm / 780.6 oz-in

Torque @ 7.4V

66.7 kg-cm / 926.5 oz-in

Torque @ 8.4V

73.2 kg-cm / 1016.7 oz-in

Speed @ 6.0V

0.12 sec / 60°

Speed @ 7.4V

0.10 sec / 60°

Speed @ 8.4V

0.08 sec / 60°

Operating Voltage Range

4.5V ~ 8.7V DC (2S HV Li-Poly / 2S Li-Fe compatible)

Control System

STMicroelectronics 32-bit MCU; frequency up to 400Hz, neutral 1500us or 1520us

Frame Rate

Under 1ms — compatible with Futaba SR & Sanwa SXR dual-mode

Dead Band Width

0.001ms (default 1us)

Potentiometer

Magnetic Hall-effect sensor (non-contact, replaces traditional VR)

Ball Bearing

Dual, EZO (Japan) stronger ball bearings

Gear

All stainless-steel helical gears

Outside Case

Full one-piece aluminum CNC casing

Motor

Custom high-efficiency brushless motor

Horn / Gear Spline

25 Teeth

Protection

Soft start, over-voltage (>9.0V), low-voltage (<4.0V), locked rotor, thermal (85°C/185°F trip, 75°C/167°F reset), and signal-loss protection

Dimensions

40.5 x 21 x 42.9 mm / 1.59 x 0.83 x 1.69 in

Weight

92.0 ± 1 g / 3.24 oz

Included Accessory

1 lockable aluminum arm (airplane type default; 2 options available)

Patent

M 502116