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Old 12-13-2012, 10:42 AM   #1
kvnm27
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Join Date: Mar 2009
Location: Charleston, SC USA
Default BLS256HV inop

Well I have a few probs but we'll just focus for now with this servo... I have a 12fgh radio, 6303sbus rx, and a cgy750. I connected all servos one at a time to get 90 through the AIL ch of the 750, this worked just fine with the BLS272hv's I then connected the BLS256HV and nothing! It's like it's not even getting power! While plugged up i can turn the servo horn by hand. This is my first venture with Futaba servos, is there some kind of secret hand shake or password I need to give this thing? Or is it DOA. I tried straight through the rx, RUD ch of the 750, and AIL ch becuz all the rest had no issues on that ch. Help??

kevin
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Old 12-13-2012, 03:26 PM   #2
jadams
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Make sure you have it set to the proper bandwidth in the 750
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Old 12-13-2012, 06:59 PM   #3
kvnm27
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Thanks I just tried it in a working setup and still nothing. Must be DOA!
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Old 12-16-2012, 12:33 PM   #4
darryl123
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that servo is a 760us servo for rudder use and must not be pluged imto recever it has to be on a gyro that outputs 760us just set the output of the cgy750 to 760us before you plug the servo in , in the rudder basic settings


INCLUDES: Futaba BLS256HV Servo
0.83" (21mm) Diameter Round Horn
1.8" (45mm) Diameter Round Horn
1.6" (38.5mm) Diameter 4-Point Horn
1.2" (32mm) Diameter 6-Point horn
Mounting Hardware

REQUIRES: Installing in heli, connecting linkage and connecting to gyro

SPECS: Speed: 0.055 sec/60 at 6.6V
0.050 sec/60 at 7.4V
Torque: 61.1 oz/in (4.4 kg/cm) at 6.6V
69.5 oz/in (5.0 kg/cm) at 7.4V
Pulse Width: 760s
Frequency: 270Hz
Size: 1.57 x 0.79 x 1.45" (40 x 20 x 36.8mm)
Weight: 2.15oz (61g)
Power Supply: 6.0 - 7.4V DC

COMMENTS The BLS256HV is designed only for gyro rudder control. Dead band is
set as narrowly as possible. When the fuselage is static, the
servo may jitter. This condition is normal.
Very high current drain is normal at startup. Always use a 6V - 7.4V
battery.
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