Brodhead Pietenpol Association

Original Posted By: BARNSTMR(at)aol.com

Original Posted By: BARNSTMR(at)aol.com

Original Posted By: "Rick Holland"
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Original Posted By: "John Dilatush"
I don't think Aluminum for a firewall is considered legal by the FAA,because it will burn. The Brits found the problem of aluminum's burning hotduring the loss of one of their ships during the Falkland's war. Smallmissle set the aluminum on fire and burnt the ship. Missle damage wassmall, aluminum fire was a disaster.Re; the question of fibefrax, this is just aluminum oxide ceramic fibers"ceramic", I think just about any insulation material like dry fiberglass(silicon oxide ceramic) functions just as well. But bottom line, the "dope"used on the Dacron fabric will be burning real good, long long before anengine fire could burn thru 16-20 ga. galvanized steel over plywood. Forthose who'd like to save a little wt. forward of the CG, and live near theBoeing surplus store near Auburn WA, the surplus store sells titanium sheetabout 20 ga., as scrap metal, cheap and very light weight. None of the olestore-bought certified ragwings have any insulation between the engine andfuselage, just a galvanized steel sheet. The FAA only requires asnon-flammable firewall between the pilot and engine. I agree with anearlier posting- if the fire burns thru galvanized steel, and startsscorching the plywood, you've already got more problems than you'd want tobe dealing with if still airborne.Gordon Bowen----- Original Message -----

Original Posted By:> "Gordon Bowen"
The "Dope" won't burn if you use the PolyFiber process. It does not support combustion.Having lost a friend who burned up in an otherwise survivable crashdue to the fabric burning, I consider this the primary reason to use Stit's PolyFiberprocess.Jack>

Original Posted By: BARNSTMR(at)aol.com

Original Posted By: Rick Holland

Original Posted By: "Rick Holland"
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Original Posted By: Michael D Cuy

Original Posted By:> "John Dilatush"
> To: > Subject: Re: Pietenpol-List: Another firewall question> > > I don't think Aluminum for a firewall is considered legal by the FAA,> because it will burn. The Brits found the problem of aluminum's burning hot> during the loss of one of their ships during the Falkland's war. Small> missle set the aluminum on fire and burnt the ship. Missle damage was> small, aluminum fire was a disaster.> > Re; the question of fibefrax, this is just aluminum oxide ceramic fibers> "ceramic", I think just about any insulation material like dry fiberglass> (silicon oxide ceramic) functions just as well. But bottom line, the "dope"> used on the Dacron fabric will be burning real good, long long before an> engine fire could burn thru 16-20 ga. galvanized steel over plywood. For> those who'd like to save a little wt. forward of the CG, and live near the> Boeing surplus store near Auburn WA, the surplus store sells titanium sheet> about 20 ga., as scrap metal, cheap and very light weight. None of the ole> store-bought certified ragwings have any insulation between the engine and> fuselage, just a galvanized steel sheet. The FAA only requires as> non-flammable firewall between the pilot and engine. I agree with an> earlier posting- if the fire burns thru galvanized steel, and starts> scorching the plywood, you've already got more problems than you'd want to> be dealing with if still airborne.> Gordon Bowen> > > > ----- Original Message -----