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Russell Duffy wrote:
Message
I found some stuff in an auto speed shop that has
AL bonded to some sort
of fiber insulation with tar looking adhesive (protected by peel-off wax
paper) in big sheets that I just cut to size, peel and press onto the
cowl. Works great. I was baking the paint off the cowl around the
exhaust, but no more.
<>Someone
with an RV-7 had a self adhesive, reflective type sheet stuck on the
inside of his cowl. I didn't look too closely at it, but he said he
got it from Van's. I used the .002 321 SS foil that McMaster Carr
sells on the last version of the lower cowl, and it worked fine, except
where the exhaust pipe is within about a half inch of the fiberglass.
On that spot, it burned the cowl through the foil. I ended up using a
thicker (about .018 304 SS sheet over that small area, but rather than
gluing it to the cowl, I used pop rivets, with a washer between the
sheet and the cowl at each rivet. That gave it an air gap underneath,
so the heat didn't get transferred to the cowl. Worked great.
Don't know if you've noticed on the older
Velocities the cowl has nipples for the exhaust and the last 6" or so
of exhaust pipe the nipples taper from about 3/4" from the cowl down to
< 1/4". That;s where I put this stuff. At 1/4" - 1/8" clearance it
still doesn't burn (or even bake) the glass. And no ugly *&$*#
rivets sticking out all over :o))
This
time, I just skipped the SS foil, and used a larger piece of the .018
SS sheet, and spaced it 1/8" from the cowl. I'm confident this will
work well, if I ever get to try it.
I've
spent the last several hours with a wet vac trying to keep the water
out of our house. The garage had a couple inches when we noticed it,
and the water was just coming in under the front door of the house.
Living room carpet and baseboards are wet, also one bath room and two
closets. There was a foot of water in my front yard! I've been in
this house for 13 years, and never has the water come up like this
before last week. The garage has been flooded now twice in two weeks.
Sure hope my TIG welder survived.
Rusty
(redefining the 30 year flood plane, minus the flood insurance)
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