BMS-1715 HV Coreless Digital MG Servo (7.4V High Voltage) 28.2 kg / 0.15sec / 66g
Direction: Clockwise/pulse travelling 1500~1900us
Dimensions: 40.5 x 20 x 39mm
Operating Voltage: 4.8~8.5v
Torque: 23.1kg/cm @ 6v, 28.2kg/cm @ 7.4v
Speed (sec/60 deg): 0.18 @ 6v, 0.15 @ 7.4v
Motor Type: Coreless
Middle Case: Aluminium Heat Sink
Lead/Plug: JR Type
Dual Ball Bearing
Titanium Alloy Gear
Spline Count: 25
Unit Weight (g):
These servos are amazing. They are strong, robust, and center very well. I use them as elevator servos on my 50cc planes.Used these servos on a 50cc yak54. They performed well but one of five servos started jittering only after 6 flights. I contacted Blue Bird Technologies Ltd. and they are going to repair the servo under warranty. If it were not for this small problem I would rate 5 crowns all around. I use other Blue Bird servos in giant scale planes and have had great success.Ok guys I ordered over 6 pcs of these servos for testing purposes and to install in my planes. All 6 were tested under extreme pull stress starting from 8kg/cm to 17kg/cm at 7.4V. The servos easily reach 16.0kg/cm without any problems.
I tested electronics and all was well-made. The gears are good and smooth. Overall, the quality of these servos are Good for those who need 17kg/cm performance.