FP S128 Voltage Limit
Hi! I'm assembling an Ultra Stick 40 ARF. I'm planing on using a switching BEC to supply the RX with 6.0v. I have an old Futaba FP S128 servo I was looking to use on the throttle. Can I drive the S128 at 6.0v? Or do I need to drop it down to 4.8v? I've looked on the web, but can't seem to find any specs that speak to the voltage requirements for this servo.
Tom |
RE: FP S128 Voltage Limit
The S128 servo will be fine at 6 volts as long as it's regulated.
Sincerely, Krysta Product Development & Support Specialist Futaba Service Center USA [email protected] |
RE: FP S128 Voltage Limit
Thanks much!!
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I know this is old, but I bought a plane that has 3 of these old FP-S128 servos and was wondering whether they could run on 6.0 volts. The fellow I bought it from had just recently installed a UBEC and set it at 6 volts. They seem to be working fine.
I found an instruction manual online for the Futaba FP-2GS transmitter which comes with two of these servos. See photo below. The servo specs say the power requirements are 4.8V - 6V. Since it mentions current drain at 6.0V, I assume the torque of 48.7 oz-in and the speed of .24 sec/60 degrees are also at 6.0V, although it does not specifically state that. https://cimg2.ibsrv.net/gimg/www.rcu...29e0505215.jpg |
That servo as stated above in this tread are fine on 6 volts as long as it is regulated voltage. The speed and torque shown are at 4.8 volts. Both will be faster/higher at 6 volts, but not hugely faster/higher.
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