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08-30-2006, 06:09 PM
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Join Date: Feb 2005
Location: Eatonton, Georgia
Posts: 65
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Heat Shielding the Inside of the Cowl
The Exhaust pipes come close to the Bottom Cowl. What if anything are folks doing to protect the cowl from the heat.
Thanks.
Rolly Clark
RV-9
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Rolly Clark
RV-9
Eatonton, Ga
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08-30-2006, 06:24 PM
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Moderator/Tech Counselor
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Join Date: Jan 2005
Location: East Troy, WI
Posts: 1,983
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Van's sells some nice, self stick, cowl heat protector. I used it and it works great.
Roberta
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Roberta Hegy
Built/Flew an RV-7A
Air Troy Estates, East Troy, WI
Ford Expedition and TRICE "Q"
Built Glen L "ZIP" Classic Outboard Runabout and Super Spartan Hydroplane
Glen L Torpedo
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08-30-2006, 08:40 PM
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Join Date: Jan 2005
Location: Victoria, Canada
Posts: 2,247
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For the close exhaust areas, I used some 0.020 aluminum cut to shape, and glued to the cowling with beads of high-temp silicone. Other areas, I used aluminum tape.
The beads of glue provides an air gap below the heat shields.
Vern Little
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08-30-2006, 08:52 PM
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Join Date: May 2006
Location: Houston
Posts: 2,010
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Originally used aluminum foil applied with spray contact cement. Lasted well for a few years. Reflected radiant energey pretty well.
After that I applied a home-brew mix of clear urethane resin and aluminum flake (glitter). Seems to reflect a fair amount of radiant energy, seals the fiberglass and adheres well.
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Bryan
Houston
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08-31-2006, 12:44 AM
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Join Date: Dec 2005
Posts: 319
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Exhaust close to cowl
We also used an asbestos exhaust pipe wrap from the last joint to the end of the pipe extending out of the cowl. the looks are not bad and should last a long time. We did this on both pipes of the RV9-A slider.
On the other RV9-A tip-up, I plan on using this wrap for the entire exhaust.
http://img208.imageshack.us/img208/3467/img0404sh7.jpg
Patrick N. Garboden/Todd Wiechman building in Wichita, KS
Ozark, MO
RV9-A slider 942WG (reserved)
RV9-A tip-up 942PT (reserved) |
08-31-2006, 07:29 AM
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Join Date: Jan 2005
Location: Martinsville, IN
Posts: 2,326
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The stuff that Van's sells works very well. Just peel and stick to the inside of your cowl. The Rocket cowl is pretty tight and the primer I had on the cowl was blistering ever so slightly. I applied the shielding and re-primed and it fixed the problem completely. It is simple to use, low cost, and easy to apply.
__________________
Randy Pflanzer
Greenwood, IN
www.pflanzer-aviation.com
Paid through 2043!
Lund fishing Boat, 2017, GONE FISHING
RV-12 - Completed 2014, Sold
427 Shelby Cobra - Completed 2012, Sold
F1 EVO - partially completed, Sold
F1 Rocket - Completed 2005, Sold
RV-7A - Partially completed, Sold
RV-6 - Completed 2000, Sold
Long-EZ - Completed 1987, Sold
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08-31-2006, 05:42 PM
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Join Date: Jul 2005
Location: Detroit, MI
Posts: 1,587
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Maybe you should not wrap SS pipes?
Quote:
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Originally Posted by gorbak
We also used an asbestos exhaust pipe wrap from the last joint to the end of the pipe extending out of the cowl. the looks are not bad and should last a long time. We did this on both pipes of the RV9-A slider.
On the other RV9-A tip-up, I plan on using this wrap for the entire exhaust.
http://img208.imageshack.us/img208/3467/img0404sh7.jpg
Patrick N. Garboden/Todd Wiechman building in Wichita, KS
Ozark, MO
RV9-A slider 942WG (reserved)
RV9-A tip-up 942PT (reserved) |
I thought I saw a warning about wrapping the Vetterman stainless steel pipes when I got mine. Maybe worth some investigation. Would likely work fine with iron pipes, as it does in race cars.
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H. Evan's RV-7A N17HH 240+ hours
"We can lift ourselves out of ignorance, we can find ourselves as creatures of excellence and intelligence and skill. We can be free! We can learn to fly!" -J.L. Seagull
Paid $25.00 "dues" net of PayPal cost for 2015, 2016, 2017 and 2018 (December).
This airplane is for sale: see website. my website
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