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1. 04:23 AM - Re: Rusty RV-8 Steel Parts (Hopperdhh@aol.com)
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Subject: | Re: Rusty RV-8 Steel Parts |
Same here. When I was working on my canopy frame to make it fit, the
powder coating cracked and flaked off showing bare metal with a little rust.
Made me not a big believer in powder coating, but maybe its OK with the
right prep. When I hear people talking about the greatness of powder coating
it always brings back memories! This was in about 2003 because my 7A has
been flying since 2004. To be honest I scraped off the loose coating,
touched it up with a spray can, and have pretty much forgotten about it. Wow!
Has it been 10 years?
Thanks, Matt for bringing this to Van's attention. I enjoy following your
building progress.
Dan Hopper
N766DH
In a message dated 7/13/2014 7:03:07 P.M. Eastern Daylight Time,
HCRV6@comcast.net writes:
I had the same problem back in 2002 and 2003 with the canopy frame for my
RV-6, which at that time was the only powder coated part I received. after
that I ordered the engine mount bare and painted it myself. Sound like
not much has changed with Van's powder coating supplier.
Harry Crosby
____________________________________
From: "Dralle, Matt" <dralle@matronics.com>
Sent: Sunday, July 13, 2014 11:27:09 AM
Subject: RV-List: Rusty RV-8 Steel Parts
I sent this email to Van's today. Something to watch out for...
>Date: Sun, 13 Jul 2014 11:23:02 -0700
>To: support@vansaircraft.com
>From: Matt Dralle <dralle@matronics.com>
>Subject: Rusty RV-8 Steel Parts
>
>
>Dear Van's,
>
>I am stripping all of the steel parts on my RV-8 to have them re-powder
coated in a textured black to match the rest of my interior. While
stripping, I have noticed a couple of things regarding factory powder coating.
Perhaps the most disturbing was the high build up rust under parts in certain
areas, primarily the ones made from the 4130 plate (see attached pictures).
This will eventually cause the powder to flake off.
>
>The other issue is the distinct lack of surface prep on all steel parts!
On every single steel part that I have stripped, there is no surface
preparation such as scuffing and/or phosphating. All of my steel parts will be
undergoing these steps prior to powder coating for the absolute best
possible protection from future rust break through. Additionally, the adhesion
of the powder coat is significantly better with these additional surface
preparations. The cost differential is minimal, since high-end coaters usually
do these steps by default.
>
>Many builders faced with changing the color of their steel parts will
simply choose to paint or powder coat over the top of the factory powder
coating. This will eventually lead to a less-than-satisfactory result for the
reasons outlined above.
>
>FYI.
>
>-
>Matt Dralle
-
Matt Dralle
RV-8 #82880 N998RV "Ruby Vixen"
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