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HomeRC & PowerAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › brass eyelets in rubber servo grommetts
03-31-2009 10:20 PM  9 years agoPost 21
Dr Lodge

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Guildford, Surrey - UK

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the wide portion of the eyelet will be in contact with the servo tray when mounted
This quote from the Futaba manual is spot on. The flange is there to prevent the ferrule (or eyelet) from digging into the airframe, whether it be made of plastic, carbon fibre or balsa. The other end without a flange can be safely tightened against the screw head which is rigid and therefore does not need a flange.

Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
TRex 500, Furion, Gaui EP200

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03-31-2009 10:21 PM  9 years agoPost 22
T-Rex-Flyer

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Panama City, Fl

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Heli 770 +1

If the wings are traveling faster than the fuselage, it's probably a helicopter.

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03-31-2009 10:29 PM  9 years agoPost 23
Dood

rrProfessor

Wescanson

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I'll wager the price of a shlub shlammich and a Grolsch that a majority here will agree.
The bet is on.

So far your side is losing.

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▲ ▲

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03-31-2009 10:57 PM  9 years agoPost 24
scrape

rrNovice

USA

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Which way do you mount a toilet paper roll

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03-31-2009 10:59 PM  9 years agoPost 25
Heli 770

rrProfessor

USA.

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It depends if you have kids around or not.

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04-01-2009 12:59 AM  9 years agoPost 26
love for scale

rrVeteran

Omaha, Nebraska U.S.A.

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here is some food for thought Multiplex servos.. use a rubber grommett, no brass eyelets. they use a plastic eyelet, that instead of a flange, has a square plastic flange that is the same dimension as the rubber grommett. it is inserted from the top, or to the screw head side. the sleeve or eyelet is 2.5mm, which if tighted too much will go thru the pre-drilled holes on the vario CF servo tray, not cut the tray. i did not like how when tightening the screw, the hole plastic eyelet piece turned with the slightest tightening. so i removed it, and installed regular brass eyelets. and installed flange side at the screw head because thats how the multiplex servos plastic eyelet is installed. My next question for the "flange down toward the tray guys," is if the flange side touches the tray, and the rubber grommett does not, the vibrations go up the flange, and are dampened by the rubber graomeet, thu not affecting the servo? correct?

I thought that the entire flat side of grommet had to touch the surface of the tray in order to dampen vibration.

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04-01-2009 01:39 AM  9 years agoPost 27
Heli 770

rrProfessor

USA.

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The bottom line is the servos won't care what way the eyelets are installed because the rubber grommets are installed on the servo flanges and it will be isolated from vibrations.

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04-01-2009 01:42 AM  9 years agoPost 28
love for scale

rrVeteran

Omaha, Nebraska U.S.A.

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thats what i figured, just second guessing myself. dont want to screw up anything

greg

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04-01-2009 01:44 AM  9 years agoPost 29
GREYEAGLE

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Flat Land's

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Flange DOWN -
Flange down against load bearing surface , screw with washer thru the lil hole , or use the new pre washered hex screws tight to the sharp side of the brass grommet.

Compression of the screw and washer holds the brass grommet securley to the under laymet foundation / allowing the isolation rubber grommet to isolate vibration from the floating servo.

If your mashing, twisting and tearing your rubber grommets and buring the screws hard - / hard bottomng the servo - your telegraphing all vibration directley into the servo case. Hence bad pot's, shot out put' bearing's shafts. Least with the rubbers it help's a bit.

Best set up I've ever seen is the top cross bridge affair tieing into the output shaft that stops the rocking and ties into the side mounts.

greyeagle

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04-01-2009 01:59 AM  9 years agoPost 30
RayoVac

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raptor4ever is a THIEF!!!

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Another vote for Flange down against the heli. Other wise you are jamming that sharp little tube into the frame or whatever material you are binding against. It won't hurt the screw head a bit.

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04-01-2009 02:07 AM  9 years agoPost 31
Heli 770

rrProfessor

USA.

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Does anyone use servo mounting plates? I find them to help with servo movement.

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04-01-2009 02:14 AM  9 years agoPost 32
GimbalFan (RIP)

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Big Coppitt Key, FL

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I'll wager the price of a shlub shlammich and a Grolsch that a majority here will agree.
The bet is on. So far your side is losing.
As I stated above in the 'exceptions' to the flange-up choice, with the use of a two-holed servo plates on top, flange-down takes on a different perspective. On my first heli build four years ago I didn't know about servo plates, and the flange-up choice stuck in subsequent builds.

But I can see a trend 'building' here, even without using my super-magnifying Tiny Town Parts Placement Goggles, and will hereby concede that a trip to the local Shlub Shlammich Shlop may soon come due.

Place your orders!

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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04-01-2009 12:47 PM  9 years agoPost 33
T-Rex-Flyer

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Panama City, Fl

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What's a shlub shlammich?

If the wings are traveling faster than the fuselage, it's probably a helicopter.

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04-01-2009 03:24 PM  9 years agoPost 34
love for scale

rrVeteran

Omaha, Nebraska U.S.A.

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similar to "tube-steak" i believe

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04-01-2009 11:00 PM  9 years agoPost 35
GimbalFan (RIP)

rrProfessor

Big Coppitt Key, FL

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What's a shlub shlammich?
similar to "tube-steak" i believe
If you can imagine a shlub shlammich is anything at all like a 'tube steak', then NO SOUP FOR YOU!

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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04-01-2009 11:28 PM  9 years agoPost 36
baddynergy

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sierra madre, ca- usa

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I'll wager the price of a shlub shlammich and a Grolsch that a majority here will agree.
Italian style please, light on the oil and vinegar..

**Unattended children will be givin a shot of espresso and a puppy**

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04-01-2009 11:30 PM  9 years agoPost 37
Dood

rrProfessor

Wescanson

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And something other than Grolsch.
Grolsch isn't very good. It tastes like dirty sweaty armpits.

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▲ ▲

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04-01-2009 11:38 PM  9 years agoPost 38
GimbalFan (RIP)

rrProfessor

Big Coppitt Key, FL

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Italian style please, light on the oil and vinegar.
Provolone or mozzarella?
Grolsch isn't very good. It tastes like dirty sweaty armpits.
If Grolsch tastes to you like dirty sweaty armpits, then perhaps you're going to the wrong types of bars to meet women.

Do you check 'em thoroughly before licking their pits?

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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04-01-2009 11:47 PM  9 years agoPost 39
baddynergy

rrElite Veteran

sierra madre, ca- usa

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Provolone or mozzarella?
hmmmm, TOUGH call. Both..
Grolsch isn't very good. It tastes like dirty sweaty armpits
Ugh, cancel that schlammich. Just lost the appetite..

**Unattended children will be givin a shot of espresso and a puppy**

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04-02-2009 03:46 AM  9 years agoPost 40
RayoVac

rrVeteran

raptor4ever is a THIEF!!!

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Yup I used the mounting plates. I have not tried it without them, but it would seem to stabilize things.

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HomeRC & PowerAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › brass eyelets in rubber servo grommetts
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