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Old 02-03-2020, 09:38 PM
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What servo is this?

I have 2 of these that i bought that were already in a plane. Anyone recognize what model this is?
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Old 02-03-2020, 09:44 PM
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Looks similar to this one
http://www.jramericas.com/103753/JRPS8717HV/?pcat=293


or this one
https://www.horizonhobby.com/ds8711h...rvo-jrps8711hv
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Old 02-03-2020, 09:56 PM
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They look similar to a few of the servos on JR's site. None of them have that printing on the case sides
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Old 02-04-2020, 09:01 AM
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Look like JR High Voltage servos to me

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Old 02-04-2020, 09:07 AM
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Quote:
Originally Posted by BarracudaHockey View Post
Look like JR High Voltage servos to me

SHAD UP You
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Old 02-04-2020, 09:10 AM
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So what is interesting is that on the top of the cases have circular machine marks. In other words the case doesn't look 100% finished. If I had to guess I'd say 8711hv.
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Old 02-04-2020, 06:38 PM
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This is the only servo I found that has the silver case with that specific printing on it
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Old 02-04-2020, 06:51 PM
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Quote:
Originally Posted by nappyroots2182 View Post
This is the only servo I found that has the silver case with that specific printing on it
I found that same image in HobbyKing of all places. If that is the servo in question, it's no monster or high torque component. Even with an HV rating.

It looks to be discontinued as well. That might be the servo in question, but I'm not saying yay or nay. It's definitely close though.

https://hobbyking.com/en_us/jr-ds631...07sec-80g.html
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Old 02-05-2020, 06:42 AM
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They're get'n lower mate.....
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One could take it as a suspect servo due to the bent servo arm -
A bent servo arm generally means it's had a crash or hard knock of some description
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Old 02-05-2020, 08:50 AM
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Quote:
Originally Posted by BarracudaHockey View Post
Look like JR High Voltage servos to me
what is HV to you ? 7.4V or 8.4V ?
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Old 02-05-2020, 09:28 AM
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Quote:
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One could take it as a suspect servo due to the bent servo arm -
A bent servo arm generally means it's had a crash or hard knock of some description
lol Yup it was crashed, by me. It was in the stab. Someone mentioned earlier that it could be a high speed low torque servo based on a discontinued servo from HK. The cool thing is the design right down to the screw used in the case top is correct. However it is not by any means a high speed servo and although I have no way to measure torque I don't believe it is a low torque servo.
It's just a mystery as the plane that I bought was full of JR DS6311's and two of these servos in the stab. Not your typical servo load out for a 100cc 3d airplane. I have thoroughly tested all the servos since the crash and only the throttle servo and one of the aileron servos had any damage and will not be used again.
It's not a big deal if I can't find out what model these are, I just though that maybe someone had some of these before and might recognize them. Since I can't find anything that looks like these other than at hobbyking, it makes me now wonder if these are even real JR servos and not just a knockoff.
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Old 02-05-2020, 12:18 PM
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He bent it to change the geometric shape of the isosceles triangulated differential.
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