Blue Bird BMS-390DMH Servo - 5.4Kg.cm 0.11s 22.5g 13mm

The Blue Bird BMS-390DMH is a high torque servo for medium sized RC planes. Its high speed makes it particularly suitable for ailerons and flaps on larger models.

With its good performance and high precsion it makes an excellent servo for many sports models weighing up to 4Kg

Blue Bird BMS-390DMH Specifications
Body dimensions	29.0 mm wide x 13.0 mm thick x 30.0 mm high	1.14" wide x 0.51" thick x 1.18" high
Max dimensions	39.0 mm wide x 13.0 mm thick x 34.0 mm high	1.54" wide x 0.51" thick x 1.34" high
Stall torque (4.8V)	4.6 Kg.cm	64 oz.in
Stall torque (5.5V)	5 Kg.cm	69 oz.in
Stall torque (6V)	5.4 Kg.cm	75 oz.in
Weight	22.5 g	0.79 oz
Lead length	16 cm	6.3 in
Operating speed (4.8V)	0.14 sec/60°
Operating speed (5.5V)	0.12 sec/60°
Operating speed (6V)	0.11 sec/60°
Operating voltage	4.5V to 6V
Operating temperature	0 to 40 °C
Bearings	2 ball bearings
Gear material	Metal alloy
Case material	Nylon and anodised aluminium
Motor type	Coreless DC motor
Working frequency	250 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