Blue Bird BMS-207WV Servo – 7.5Kg.cm 0.05s 17.5g 12mm

The Blue Bird BMS-207WV is fast, and have amazing high torque, making it a great servo for most RC applications. Weighing 17.5 g, and 12 mm thick, it is perfect for RC planes and gliders. At 8.4V the BMS-207WV’s torque is still a very impressive 7.5 kg.cm while having an amazing speed of 0.05 seconds per 60° of movement. These are very impressive speed and torque figures for such a small and well priced servo, making it good for most applications. It is suitable for all control surfaces and especially flaps on F5J models, most gliders wingspan and many RC sports models and helicopters. At 12 mm thick it is suitable for mounting in small fuselages and thin wings and tails.

The WV in the name stands for Wide Voltage, indicating that this servo has wide range of acceptable supply voltages and is suitable for 1S LiPo, 4 or 5 cell NiMH and 2S LiPo operation.

The Blue Bird BMS-207HV is a great servo and uses the same technology as the new BMS 125/126/125 range of servos. It is similarly precise, with no free play in the geartrain, and it is even more powerful and faster than the smaller servos. The large output spline is identical to Futaba 25 tooth splines, so replacement output arms are readily available.

Blue Bird BMS-207WV Servo Specifications
Body dimensions	23.2 mm wide x 12.0 mm thick x 27.5 mm high	0.91″ wide x 0.47″ thick x 1.08″ high
Max dimensions	32.0 mm wide x 12.0 mm thick x 33.0 mm high	1.26″ wide x 0.47″ thick x 1.30″ high
Stall torque (3.7V)	3.3 Kg.cm	46 oz.in
Stall torque (6V)	5.4 Kg.cm	75 oz.in
Stall torque (8.4V)	7.5 Kg.cm	104 oz.in
Weight	17.5 g	0.62 oz
Lead length	16 cm	6.3 in
Operating speed (3.7V)	0.09 sec/60°
Operating speed (6V)	0.07 sec/60°
Operating speed (8.4V)	0.05 sec/60°
Operating voltage	3.5V to 8.4V
Operating temperature	0 to 40 °C
Bearings	2 ball bearings
Gear material	Metal alloy
Case material	Nylon
Motor type	Coreless DC motor
Working frequency	333 Hz
Dead band/resolution	2 µs
Pulse width for ± 60º	(L) 900 µs – (0°) 1520 µs- (R) 2100 µs
Digital	Yes
Programmable	No
Position feedback	Potentiometer
Supplied accessories	2 plastic output arms, 1 arm retaining screw, 4 mounting screws, Blue Bird sticker
Optional accessories