The Blue Bird BMS-207WV
is fast, and have amazing high torque, making it a great servo for most RC aplications. 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 especillay 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.
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 sdame technologuy 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 Specifications|
||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
||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)
|Stall torque (6V)
|Stall torque (8.4V)
|Operating speed (3.7V)
|Operating speed (6V)
|Operating speed (8.4V)
||3.5V to 8.4V
||0 to 40 °C
||2 ball bearings
||Coreless DC motor
|Pulse width for ± 60º
||(L) 900 µs - (0°) 1520 µs- (R) 2100 µs
||2 plastic output arms, 1 arm retaining screw, 4 mounting screws, Blue Bird sticker