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Re: [FlyRotary] Re: Two problems solved, 2 more pop up...
On 5/23/04 7:54 PM, "Ed Anderson" <eanderson@carolina.rr.com> wrote:
----- Original Message -----
From: Bulent Aliev <mailto:atlasyts@bellsouth.net>
To: Rotary motors in aircraft <mailto:flyrotary@lancaironline.net>
Sent: Sunday, May 23, 2004 2:41 PM
Subject: [FlyRotary] Re: Two problems solved, 2 more pop up...
On 5/23/04 11:49 AM, "Alex Madsen" <madsena@rose-hulman.edu> wrote:
I would try aluminum tape for radiation shedding of the turbo after shutdown. Just apply it to the cowl wherever you want some shielding. It is sold in almost any hardware, and is designed for high temps.
Aluminum tape alone will not do it. You should get Fiberfax from Spruce and glue the FF to the cowling than the Aluminum (or better stainless) to the Fiberfax. The Stainless will reflect the heat and the FF will insulate the skin from the heat.
Bulent
While Fiberfax sounds like an ideal material for such a problem, let me caution you about it. I also attempted to use Fiberfax to insulate my lower cowl from the header pipes. I soon removed it because it was fragile and tore easily, but more importantly it absorbed oil like a sponge. I could just see it sitting there oil soaked waiting for the right combustion event.
I removed it and found that aluminum foil worked just fine and was much cheaper and less fire prone. As long as you are not applying the aluminum foil to the headers or turbo pipes them selves, it will work nicely. Now, if you are going to wrap it around a turbo or header then I agree it will not stand up to the temp/heat.
But, unless you are going to forever have an oil free engine compartment I caution against fiberfax unless you somehow incase it so oil drippings will not be absorbed by it.
FWIW
Ed Anderson
Having self adhesive aluminum foil close to the red hot turbo it will melt the adhesive. Also if you are getting oil in this area, you are in trouble already. I agree fiberfax is brittle, but they also have other insulators that will work.
Bulent
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