JR 370A GYRO
06-24-2013, 02:11 PM
#2
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RE: JR 370A GYRO
I wouldn't recommend using the JR 370A Gyro on any voltage above the 6.0 V max specified.
Note that JR offers a voltage regulator, P/N VR5203 specifically designed for gyros. This regulator drops an input voltage of 5.5-10.0 V to a constant 5.2V for a gyro and any other device designed for this voltage limit. I installed one in my SMGripen jet for the JR 460 Gyro and it works just fine. I also have one installed in another jet with voltage sensitive servos for retracts and brakes, and it has prevented servo burnout in this application. Also, the VR5203 regulates 2-channels down to 5.2Vso you can use it on another servo besides the gyro. It is about the size of a postage stamp, weighs about 1/3 oz. and installs between the receiver and the gyro/servo.
Art ARRO
Note that JR offers a voltage regulator, P/N VR5203 specifically designed for gyros. This regulator drops an input voltage of 5.5-10.0 V to a constant 5.2V for a gyro and any other device designed for this voltage limit. I installed one in my SMGripen jet for the JR 460 Gyro and it works just fine. I also have one installed in another jet with voltage sensitive servos for retracts and brakes, and it has prevented servo burnout in this application. Also, the VR5203 regulates 2-channels down to 5.2Vso you can use it on another servo besides the gyro. It is about the size of a postage stamp, weighs about 1/3 oz. and installs between the receiver and the gyro/servo.
Art ARRO
06-24-2013, 03:01 PM
#3
RE: JR 370A GYRO
I have used unregulated LiFe packs with many 370A gyros without a problem. I don't know about pumping 7.4 volts (8.4V fully charged) into them though. The only problem with running the suggested regulator is that the servo that is plugged into the gyro is then only operating at 5 volts and you will lose some speed and torque. I would use a regulator that will output about 6.6 volts so you can get full power and speed from the servo.
KennyMac
KennyMac
06-25-2013, 03:44 AM
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RE: JR 370A GYRO
RAPPTOR,
I doubt you'll see any difference in speed or torque on operating your servo (presumably nose gear steering) on 5.2 Vvs. 7.4 V. However you'll note a big difference in feeding 7.4 Vto a gyro specified for 6.0 V max.
I run A123 batteries at 2S and have burned out several mini servos before installing the JR VR 5203 regulator-no problem since installing the reg.
Suggest that you pose your question to the Radio Manufacturers, .....,Direct Support Sub-Forum of the RCRadio Forum here on RCU. Post it in the JR and Spektrum sub-forum for a more"official" answer.
Art ARRO
I doubt you'll see any difference in speed or torque on operating your servo (presumably nose gear steering) on 5.2 Vvs. 7.4 V. However you'll note a big difference in feeding 7.4 Vto a gyro specified for 6.0 V max.
I run A123 batteries at 2S and have burned out several mini servos before installing the JR VR 5203 regulator-no problem since installing the reg.
Suggest that you pose your question to the Radio Manufacturers, .....,Direct Support Sub-Forum of the RCRadio Forum here on RCU. Post it in the JR and Spektrum sub-forum for a more"official" answer.
Art ARRO
