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Old 06-07-2009 | 05:35 PM
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exciter900rr
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From: Cathedral City, CA
Default RE: New Edge 540 T

I use gorilla glue- the stuff that looks like a light coffee color, the consistency ofmolasses... the reason I clarify, is that they (gorilla glue) are coming out with a bunch of different products.
I take a q-tip, and dip it in water, and flick off most of it. just so it's wet, but not dripping. insert it into the hinge holes down the surfaces to be glued. (I like to do them all, one side at a time, but I think you have the fast build and only require the rudder to be completed) The reason for the water, is that it activates the gorilla glue and makes the expansion process begin. I also use a fine oil, which I had to oil the bearings in a heli. it has a cool applicator tip like a blunt syringe. I just put a couple drops in the hingeknuckle, and cycle the hinge a couple times to work it into it. then, I take the q-tip, and pull all of the cotton off of it, and use this as the applicator for the glue. I re dip only three times, and you wouldn't think it's enough, but after a couple hinging jobs you'll realize that too much is a bad thing as it expands. Once applied in the hinge hole (one side at a time - either the fuse, or the rudder not both at the same time) I then insert the hinge into the hole and ensure that the center of the hinge is at the center of the bevel, then turn the hinge to the side. this will show you if the hinge is out of square. with it deflected to the side, make sure the hinge is 90* to the surface, and that they all areparallel to each other. one last thing, is to position the plane s that the excess glue will run down over the hinge inside the surface. ie. the fuse pointed up for the hinges in the vert stab, and then when you repeat for the rudder itself, nose down when drying.

Long winded, but hope this helps!
KM

Also, you will find that the glue will encrust the hinge knuckle once cured and will have expanded into a hard foam around the knuckle. some suggest to wipe off the excess with a damp cloth from around the knuckle, but I prefer to let it do it's thing and cut it off with a dull x-acto blade afterwards. I feel that when yo wipe it off, you are actually wiping it into the knuckle. rather than just peeling it off at the end. This is a two step process for both sides of the surface, but in my opinion, far superior... I epoxied the rudder on my WH Sukhoi in haste, and realized that more than half of the rudder hinges failed at the glue joint. time well spent in the beginning with gorilla glue.