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T-REX 500 › Trex500 servo instalation question
05-15-2008 06:13 PM  9 years agoPost 1
xxcysxx

rrKey Veteran

Baltimore, MD - USA

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I'm installing the jr ds3421 in my trex500.
Are you not suppose to use the servo rubber groovement and brass eyelets when mouting the servos to the frame. Beacuse when i use the rubber groovement and the brass eyelets, the moounting holes on the servos and frame does not mach up.
Also the manual doesn't show the use of rubber groovement and brass eyelets in the picture instruction either.

i though it would be better to have a little cushon for the servos, to isolate it from vibration. But i'm confuse.

Tam

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05-15-2008 06:20 PM  9 years agoPost 2
Tony Whiteside

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Shepherdsville, KY ​ US

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Well I'm using futaba 9650s and I use them​with my servo's with no problem.

Some body should ring in soon that are using those servo.
Tony

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05-15-2008 06:26 PM  9 years agoPost 3
outhouse

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auburn ca

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9650,s and no grommets. with our heli,s they are not needed.

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05-15-2008 06:28 PM  9 years agoPost 4
Tony Whiteside

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Shepherdsville, KY ​ US

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what would it help by not using them?

Tony

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05-15-2008 06:47 PM  9 years agoPost 5
docjoe

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Stockton, CA United​States

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With Electric helis, you typically do not need the rubber grommets because it does not have the high vibes that a Nitro heli has. I don't run grommets on my electric helis, even my 600s.

Joe
We haven't seen Colonel Angus around these parts for years!

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05-15-2008 06:48 PM  9 years agoPost 6
renelu

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Virginia Beach, VA,​USA

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There really isn't much vibration in an electric model (compared to a glow machine) to worry about damaging the servos. If you use the grommets, there will be a little play between the servo and frame which may translate into slop at the linkage to the head. I'm not using grommets on any of my electric helis or planes. You may shave off a couple of grams by leaving them out, too

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05-15-2008 07:02 PM  9 years agoPost 7
Tony Whiteside

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Shepherdsville, KY ​ US

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thanks for the info. I will use them for now

If I don't like it I will just take them off. But will have to say I have never had a slop problem with my 50s and 90s. I don't use them on my 450s. But thinking about it with out using them should get a little more snap. Humm think I will take them back off.

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05-15-2008 07:35 PM  9 years agoPost 8
xxcysxx

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Baltimore, MD - USA

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I think futaba s9650 is a little larger than jr ds3421. No wonder they mate so perfectly. I have no idea.
I'm just going to mount the servo without the rubber groovement then.

thanks guys.

Tam

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05-15-2008 10:35 PM  9 years agoPost 9
S76 Mech

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Hatboro, Pa.

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9650s, no grommets

Gaui Greatness X7, X5, NX4, X3

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05-15-2008 11:22 PM  9 years agoPost 10
JAGNZ

rrProfessor

Auckland, New​Zealand

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Ino-Lab Digitals here - single mounting hole - with Grommets and sleeves.


Jason Greenwood

www.3dheli.co.nz

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