Powder Coat on 4130

"Drew Dalgleish" wrote in message
[...]
I find it very hard to believe that forces strong enough to crack
4130
wouldn't be strong enough to crack powder coating.
I suspect the real reason for not powdercoating the chopper frame
has
a lot to do with filming schedules.

Whatever the reason for the FAA hostility for powder coating, I have
receive pma'd parts that were powdercoated, or "powercoated" as a
member of my EAA chapter calls it.

" jls" wrote

Whatever the reason for the FAA hostility for powder coating, I have
receive pma'd parts that were powdercoated, or "powercoated" as a
member of my EAA chapter calls it.

Cute g

Although I have never had, or seen, an aircraft "powercoated" part crack, I
have seen other powder coated steel parts crack, and the powdercoated crack
remained hidden.

I would not choose powdercoating for a finish for anything I built.

Besides that, I can spray paints, myself, and can not so easily powdercoat
anything.
--
Jim in NC

Morgans wrote:

" jls" wrote

Whatever the reason for the FAA hostility for powder coating, I have
receive pma'd parts that were powdercoated, or "powercoated" as a
member of my EAA chapter calls it.


Cute g

Although I have never had, or seen, an aircraft "powercoated" part crack, I
have seen other powder coated steel parts crack, and the powdercoated crack
remained hidden.

I would not choose powdercoating for a finish for anything I built.

Besides that, I can spray paints, myself, and can not so easily powdercoat
anything.


Besides that, the stuff is heavy!

"cavelamb himself" wrote

Besides that, the stuff is heavy!

Yeah, what he said! g

I can't believe I didn't think of that, too.

The stuff sure is pretty, though.

Another thing is, it is so tough, that it is not likely to show damage when
something smashes into it. If something hits my metal hard enough to chip
or mark paint, I would want to know about it. That stuff wouldn't show a
mark.
--
Jim in NC

"Morgans" wrote in message
...

" jls" wrote

Whatever the reason for the FAA hostility for powder coating, I
have
receive pma'd parts that were powdercoated, or "powercoated" as a
member of my EAA chapter calls it.

Cute g

Although I have never had, or seen, an aircraft "powercoated" part
crack, I
have seen other powder coated steel parts crack, and the
powdercoated crack
remained hidden.

I wouldn't use powdercoat on an engine mount, for sure and not on a
4130 fuselage. But it came on the lift strut of a PA-18 and a
rudder-- both PMA'd.

I would use it on the step (or stirrup) that helps you get into the
cockpit. There you need it because of all the wear you would have on
paint.

I have seen it used with great esthetic appeal on yokes.

I would not choose powdercoating for a finish for anything I built.

Besides that, I can spray paints, myself, and can not so easily
powdercoat
anything.

Eastwood has a kit you can buy which is cheap and easy to use. You
just need an oven to cure it in once you've got it sprayed on your
part. The powder is attracted to the part by a high voltage.

I would not use powdercoat on highly stressed parts but it certainly
has a use in places on some aircraft, especially where the wear on
paint keeps you having to recoat it.
--
Jim in NC


James in WNC

" jls" wrote in news:%9_Mh.30455$sC.5421
@bignews2.bellsouth.net:


"Drew Dalgleish" wrote in message
[...]
I find it very hard to believe that forces strong enough to crack
4130
wouldn't be strong enough to crack powder coating.
I suspect the real reason for not powdercoating the chopper frame
has
a lot to do with filming schedules.

Whatever the reason for the FAA hostility for powder coating, I have
receive pma'd parts that were powdercoated, or "powercoated" as a
member of my EAA chapter calls it.

I believe the reason is that the coating can lift if the surface
underneath gets a bit rusty, forming a pocket where moisture can form
between the coating and the steel. The coating won't deform and flake
off in the same way that paint will and the rust will continue until
it's eaten through something with little or no external evidence that
that is happening. There have been some real problems with tube
airplanes in wet regions and in fact the UK CAA is considering banning
it altogether.


ALC