Dave,
This topic has come around many times. This so called UV protection additive is
little more than a sales gimmick. See previous notes by Graham Singleton etc..
If your aircraft is really exposed to sunlight most of its life , then some
protection is probably required. The only way to stop ultraviolet rays to reach
the structure is to use very dark paint, i.e. a dark green epoxy primer or
primer
filler is all you need underneath your topcoat. I didn't do that, but then
my Europa spends most of its life in the garage, in a hangar, or is covered
up. I have used small amounts of smooth prime and found it easy to work with.
It's shelf life, at least that of the hardener , is very limited. For topcoating
I would stay away from polyurethane. I used two-part acrylic urethane with
great success and at low cost. I heard recently that some builders are now using
two-part automotive paints.
Karl
From: "Dave Anderson" dja767@charter.net
Subject: Europa-List: Repainting the mini U2
Date: Fri, 9 Apr 2004 20:28:06 -0700
-- Europa-List message posted by: "Dave Anderson" dja767@charter.net
Hello group.
As a result of finish coat failure (a HUGE, long story), I am starting to
experiment
with removing my paint and repainting the airplane. I have UV smooth prime
underneath for the UV protection and after today's trial sanding it is clear
the paint will come off fine, but I will not be able to avoid doing the entire
job over again. I can't leave the primer underneath and get thte finish coat
off. I will attempt to remove the finish coat from the primer on certain areas,
but I am facing repeating history. The plan now is to go with two possible
choices. One is aerothane with an epoxy primer. Unfortunately the epoxy primer
doesn't have UV protection ( what the heck is that anyway, really!). I have
a local painter who has said he does not like the water based UV smooth prime
- he does not use if and has painted airplanes that have been primed with it.
Here is the question: Does anybody know if there is another option for priming
with a UV protection that is not UV smooth prime ( seems everyone uses that
stuff)?
Also, since it has been over a year since I painted and I have a gallon
left over, does anybody know what the shelf life of that stuff is? I have
purchased
a quart and am going to experiment with different items to paint to see
if i can get a smooth finish.
I just can't wait to get more painting experience! This time, it will work!
Dave
A227
Mini U2
178 hours TT
working on cabin heater, upholstery and REPAINT!
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