Does the brass sleeve go up or down ?
Installing for the aileron.
I think it goes on top or do I really need
to put them in the servo ?
Thanks,,,

They are best used to maintain some amount of cushion effect in the rubber. If you leave them out, you can tighten the screws down to a point where the rubber has no vibration dampening effect. My experience with Futaba servos has been to install them flange down, the shoulder of the screw comes down on the tube end of the bushing and forms a grommet to hold the rubber tight, yet allow it to dampen vibration.

They also help maintain grip on the servo. This will keep your servo from becoming detached in flight! A most challenging predicement!

Thanks ,SoonerAce
I can't believe that I finally
got a reply, I was beginnig
to think nobody liked meeee.

same here... futaba (and most others) flange on the bottom. I recently got a bunch of blue bird servos, and they come with 8 flanges per servo, took a little bit to realize one set is smaller and designed to fit inside the other, pretty nice design! You get lots of cushioning and good surfaces for the screw head.

I studied this a bit.
I feel that the brass bushing should be installed from the bottom. This will provide a wider surface against the wood. If installed with the flange toward the screw, the thinwall of the brass will cut right into the wood, eventually becoming loose and rattling. With the flange against the wood, the screw head is against the thinwall side and a sort of captive spool is created. The screw head will not be bothered by the thin wall edge. The brass bushing also keeps the rubber grommet snug in the servo flange.

WOW! You had to wait a whole 7 minutes for a reply. This isn't a chat room Radcom.

By the way, always grommet end down, or as Sooner and Tim pointed out, the thin wall will cut into the wood eliminated the grommets, and the rubber's purpose.
Dennis-

O.K. , I'm impatient....
Thanks everyone for your help and I'll
put the flange down.
This is an AFT and just wait till I get my KIT.
I'll need alot of help then.
Anyway I must of search RCU and the web for
an hour, looking for imfor. on this, before I posted.
Maybe that's why I was impatient.
Later.....

Hi!
Yeah! Flange down!

Jan K

I remember complaining about how difficult it was to get the sleeve in from the bottom in front of a couple old time "builders'. They both looked at me like I had two heads. I was asking for a tip on some tool to use to get the sleeves in from the bottom and these guys both wondered why I was doing it that way. I explained that then the rubber isolator is held between the screw head and the grommet, to allow the isolator to provide vibration isolation. One of them said maybe he would try it that way. Go figure.

Now I put a stack of them on a little screwdriver and get one started, finish later with the side of a larger screwdriver blade. Some guys make a tool from tubing and wire, to capture and insert just one at a time.

Good luck,
Dave Olson

I can't believe how difficult you guys make this task sound. I simply take a small ball driver and thead all four sleeves flare side down and punch them in from the bottem up one after the other.
SIMPLE

In your picture you have them upside down. You want the wide flange at the bottom.

HI" rctrax:
That's a nice tip to know.
I fumble around with my butter fingers.
Dropped a few,but got them in the correct way.
I'll use your tip next time.

Almost any task is simple once you've learned the "tricks".

I will say that some servos are much easier to install the grommet than others!
Dennis-