Aileron Hinge Brackets priming

[JohnR]

No, not a primer wars question.

I got a couple more hours in the shop tonight and the last thing I did was de-blue and match up the aileron hinge bracket pieces. The prints that came with them say that only the mating surfaces of the angle need to be primed. How did everyone else do this? Did you just prime the mating surfaces of the angles? Is this to help the plates match up tighter?

I plan on working on this again tomorrow so thought I would get some expert advice.

[mustang]

I just primed the whole 9 yards on the aileron brackets. After all, you are going to paint them right? So, you might as well prime them properly too. I used Super Koropon and let it cure for a few days to eliminate shrinkage after riveting. Be sure to countersink on the correct side of the brackets, the inside holding the aileron. You need to prime the inner surfaces of the plates holding the bearing so that capiliiary action with water will not cause corrosion between the plates.

Cheers, Pete

[jim_geo]

I did the entire hinge also. Since they are an "outside" construct it made sense to prime at least the mating surfaces. Basically I've coated all mating surfaces with a primer and left the large Alclad surfaces (inside skins) bare except where they meet other parts.

[JohnR]

Thanks for trhe responses. I'm not to that portion of the plans but thought I would prime them when I do some other parts. I plan on priming the whole shebang.

[captain_john]

Like Mustang said, you are gonna hafta paint 'em anyways...

The reason why they say just the inside is...

a) When they get painted with the plane later, they will be coated and less paint means a lighter plane.

b) When you paint over old, cured primer you need to scuff it.

c) If you are using epoxy, it will chalk up on you if it is left exposed to UV's.

Me? I painted mine inside and out with epoxy!

CJ