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Old Sep 10, 2003, 09:53 PM
DavidJ is offline
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Rubber Servo Mount Bushings-Anyone Use Them?

Does anyone use the rubber servo mount bushings with the brass insert that comes with most servos?


I have on some and not on others, and can not tell a difference.

David J.
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Old Sep 10, 2003, 10:03 PM
Jim McPherson is offline
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I do, but only becuase that's what I was taught. Can't see any good reason not to. They'll provide a little give and could lessen the likelyhood of stripping, and the weight is nill. Plus they look nice.

Old Sep 10, 2003, 10:15 PM
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I agree with Jim. I use them on the Pico and not on Hitec 55. Different size holes.
Orginally they were to protect the servo from the vibration of a gas engine.
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Old Sep 10, 2003, 10:15 PM
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They also may be recommended for IC (slimer) planes due to the excess vibration. I think with electrics you can certainly get away without using them.
Old Sep 11, 2003, 12:30 AM
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They seem to compress to easy (maybe I'm tightening to much?) so I didn't use them. I did have to go to a larger screw because the supplied ones kept slipping out of the notch. They're nice and secure now.

Old Sep 12, 2003, 01:56 AM
Grejen is offline
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I don't use 'em. Figure with electrics you don't need the vibration protection and the servo needs to be held more positively to reduce the slop. Esp with the reduced arm travel on smaller servo's and control arms. 1mm of servo wiggling is not gonna make a difference on a .40 Kadet but it sure would on some of these higher performance parkies. SB etc.
Old Sep 12, 2003, 02:07 AM
William A is offline
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I don't use them either, and what's worse, I save 'em. I don't know why, save all those extra servo arms too.
Got tons of both.
Old Sep 12, 2003, 04:09 AM
Martin Hunter is offline
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I use them on Pico bb servos only to decrease the size of the hole and make a screw slipping less likely. I typically don't use the little brass collars that come with them, though.

Old Sep 12, 2003, 04:36 AM
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Only used them in my moth after I put a servo tray in it and needed to screw the servos down. All my other planes they're taped in so don't need em.
Old Sep 12, 2003, 05:12 AM
LenBFP is offline
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If I use the grommets I also use the eyelets, they work as a system to keep everything in place. Usually I just tape the servo or put it in a hole cut to fit. Lately I have been using the HS55 servos and they don't have the grommets and eyelets.

Old Sep 12, 2003, 08:14 AM
Tim Jonas is offline
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I use the brass insert and the rubber....always did, it just seems to be part of my "scan pattern".
Old Sep 12, 2003, 10:00 AM
redtiger is offline
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I use them, but on my MPjet gearboxes. Without the brass inset, it makes it very easy to adjust the motor's angle if I need to - just compress the grommet a bit more.
Old Sep 12, 2003, 12:54 PM
FredN is offline
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If the servo comes with the rubber grommets I used them. If
they don't (like the HS-55) I don't.

Old Sep 12, 2003, 01:16 PM
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I have used them in my MM Switchback but without the brass inserts.
The whole idea is to reduce vibration from the the case of IC , the vibration is an issue!

Old Sep 12, 2003, 01:18 PM
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Yep - I nearly always use them. My old slimer habits die hard.....


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