Tim wrote:

> I plan on using "Nevada silver" as a base and considering a checkerboard
> pattern on the nose.

The thing about silver is that is entirely composed of metallic aluminum
chips.  You might argue that it's very thin, and you'd be right, be so is
aluminum foil, the stuff that people use to make ground planes out of.  I
was thinking about painting my plane the same color as my car, which has a
little metallic in it.  An electrical engineer buddy whose specialty is
antennas modeled my vertical stab and antenna in some software that analyzes
antenna patterns at specific frequencies.  While the signal improved
slightly out front (for 123 kHz), it just about got killed completely from
behind, thanks to the vertical stab and rudder behind it.  That's bad
enough, but then it dawned on me that the other half of antenna dipole is
buried INSIDE the fuselage, and beneath the aft deck, so you might as well
throw that leg away entirely!  That's when I went to just plain red.  Based
on his analysis, and the experience of others, silver paint would seriously
degrade antenna performance, which is why I'm probably going with a very
light gray on top instead.  My thinking is that white or light gray is easy
to see from above, and a dark color such as red is easy to see from below.
If neither of those arguments hold water, then it's just because I like red!

> As A side note, do you see any problem using feather fill over
smoothprime?

I don't know about Feather Fill, but I sprayed an entire layer of urethane
primer over Smooth Prime on my plane.  Not that it proves anything, just
that I don't think there'll be a problem with what I did.  Can't say about
Feather Fill, since it's polyester based.  Wouldn't you want to follow
Smooth Prime with the primer or sealer that's recommended for your top coat?
For example, DuPont's Ultimate 2K urethane primer is OK for use directly
under DuPont's urethane colors, and it has a great build and is easy to
sand.  It's working for me.  Feather Fill might be just fine, but I don't
know.  I guess I should let somebody that knows what they're talking about
answer that one...

Mark Langford, Huntsville, AL
N56ML "at"  hiwaay.net
see KR2S project at http://home.hiwaay.net/~langford


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