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Fiberfrax on the firewall

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bob88

Joined: 24 Feb 2013
Posts: 99

Posted: Sun Dec 15, 2013 5:25 pm Post subject: Fiberfrax on the firewall

Has anyone out there used a product called FYREWRAP to insulate their firewall? It is a fiberfrax-like product with stainless steel foil on one side. Regardless of the product, is it better to insulate on the engine side or the cabin side (or not insulate at all?)

Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Sun Dec 15, 2013 6:38 pm Post subject: Fiberfrax on the firewall

Probably approaches primer in various opinions. I used fiberfrax on the 

cabin side of firewall. I prefer having engine side of firewall smooth, 

so that oil and dirt can be easily cleaned. Others will wax poetic about 

advantages of engine side of firewall.



On 12/15/2013 6:25 PM, bob88 wrote:

 	  Quote: 	
		   



 Has anyone out there used a product called FYREWRAP to insulate their firewall? It is a fiberfrax-like product with stainless steel foil on one side. Regardless of the product, is it better to insulate on the engine side or the cabin side (or not insulate at all?)





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=415631#415631

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

carl.froehlich(at)verizon
Guest

Posted: Sun Dec 15, 2013 6:48 pm Post subject: Fiberfrax on the firewall

Cabin side.  That way the grease and grime does not get into the insulation.



I used this for the whole plane (the double sided version):

http://www.aircraftspruce.com/pages/cs/insulation/insulator3.php

And this tape to hold it all in:

http://www.aircraftspruce.com/pages/cs/insulation/insultape.php



If you want to do the minimalistic approach then just do the inside of the

firewall and the tunnel floor.  I did all the hidden areas between the

floorboards, under the seats and the where the hull has a double wall.



Carl



--

Tim Olson

Joined: 25 Jan 2007
Posts: 2878

Posted: Mon Dec 16, 2013 6:32 am Post subject: Fiberfrax on the firewall

Carl,

I used almost exactly the same thing. At the time I think it was called

Foss Thermozite Plus.  But the stuff I got (the "plus") was silver on 2

sides.  You didn't run across that anywhere, did you?  I will probably use

it again on the RV-14.  I used red RTV to stick it to the side walls

and firewall, and it hasn't loosened up at all....that was the benefit

to me of the silver on 2 sides.  The tape would work too of course, but

if I can find the "plus" stuff easily I'll do that.



Tim



On 12/15/2013 8:48 PM, Carl Froehlich wrote:

[quote] 



 Cabin side.  That way the grease and grime does not get into the insulation.



 I used this for the whole plane (the double sided version):

 http://www.aircraftspruce.com/pages/cs/insulation/insulator3.php

 And this tape to hold it all in:

 http://www.aircraftspruce.com/pages/cs/insulation/insultape.php



 If you want to do the minimalistic approach then just do the inside of the

 firewall and the tunnel floor.  I did all the hidden areas between the

 floorboards, under the seats and the where the hull has a double wall.



 Carl



 --

schmoboy

Joined: 26 Feb 2006
Posts: 130

Posted: Mon Dec 16, 2013 6:45 am Post subject: Fiberfrax on the firewall

Carl, link below has an option to buy it with foil on both sides.



-Sean #40303 (struggling to complete the last 90%)



 	  Quote: 	
		   Tim Olson <mailto:Tim(at)MyRV10.com>

 December 16, 2013 at 8:31 AM

 



 Carl,

 I used almost exactly the same thing. At the time I think it was called

 Foss Thermozite Plus.  But the stuff I got (the "plus") was silver on 2

 sides.  You didn't run across that anywhere, did you?  I will probably 

 use

 it again on the RV-14.  I used red RTV to stick it to the side walls

 and firewall, and it hasn't loosened up at all....that was the benefit

 to me of the silver on 2 sides.  The tape would work too of course, but

 if I can find the "plus" stuff easily I'll do that.



 Tim

carl.froehlich(at)verizon
Guest

Posted: Mon Dec 16, 2013 6:51 am Post subject: Fiberfrax on the firewall

ACS has both the single and double side aluminum versions.  They are listed

as different part numbers (09-06016 for double sided).  The double side

makes the most sense as it provides a barrier to getting "stuff" into the

insulation material.



Carl



--

Tim Olson

Joined: 25 Jan 2007
Posts: 2878

Posted: Mon Dec 16, 2013 6:58 am Post subject: Fiberfrax on the firewall

I guess it's Monday...I looked right at it and didn't see.  Thanks Carl!

Tim



On 12/16/2013 8:50 AM, Carl Froehlich wrote:

 	  Quote: 	
		   



 ACS has both the single and double side aluminum versions.  They are listed

 as different part numbers (09-06016 for double sided).  The double side

 makes the most sense as it provides a barrier to getting "stuff" into the

 insulation material.



 Carl

Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Mon Dec 16, 2013 7:02 am Post subject: Fiberfrax on the firewall

I didn't see a link. I did look at the Foss Thermozite product just now. I am concerned that the fiber between the foil layers is polyester, from shredded plastic bottles. I wonder how well that stands up to heat compared to ceramic materials like fiberfrax. If I could find genuine fiberfrax sandwiched in foil I would love to add that to the fiberfrax I already installed.

 

On Mon, Dec 16, 2013 at 7:45 AM, Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)> wrote:

  	  Quote: 	
		  --> RV10-List message posted by: Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)>

  

 Carl, link below has an option to buy it with foil on both sides.

 

 -Sean #40303 (struggling to complete the last 90%)

 

  	  Quote: 	
		   Tim Olson <mailto:Tim(at)MyRV10.com (Tim(at)MyRV10.com)>

 December 16, 2013 at 8:31 AM

 --> RV10-List message posted by: Tim Olson <Tim(at)myrv10.com (Tim(at)myrv10.com)>

 

 Carl,

 I used almost exactly the same thing. At the time I think it was called

 Foss Thermozite Plus.  But the stuff I got (the "plus") was silver on 2

 sides.  You didn't run across that anywhere, did you?  I will probably use

 it again on the RV-14.  I used red RTV to stick it to the side walls

 and firewall, and it hasn't loosened up at all....that was the benefit

 to me of the silver on 2 sides.  The tape would work too of course, but

 if I can find the "plus" stuff easily I'll do that.

 

 Tim

 

 

 

 

 

 

 

 

	
 

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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

johngoodman

Joined: 18 Sep 2006
Posts: 530
Location: GA

Posted: Mon Dec 16, 2013 7:23 am Post subject: Re: Fiberfrax on the firewall

I used a product from Aircraft Spruce called Firewall 2000 Ceramic Blanket:



http://www.aircraftspruce.com/catalog/appages/firewall2000.php



I used a special adhesive to attach it - still holding strong after 2.5 years of flying. The hardest part is not cutting yourself with the stainless steel foil side.

On the cockpit side I used Soundex.



John

_________________
#40572 Phase One complete in 2011

rv10flyer

Joined: 25 Aug 2009
Posts: 364

Posted: Mon Dec 16, 2013 1:28 pm Post subject: Re: Fiberfrax on the firewall

I used 1/8" bare fiberfrax on cabin side of fw, tunnel bottom and tunnel fwd. I used the recommended 2000F glue from ACS. No problems with it coming loose or tunnel heat. I burn tested a sample and was not overwelmed with outgassing. I installed an adjustable snap switch limit set to 230F near cowl outlet. It has went off once cruising at 16,500', full gross, LOP, 6 deg pos pitch(normally 2-3). Assuming thin air heated up more passing cylinders. Knowing you have a fire should be top priority. Along with switch/led, I have set my fuel flow limit to 26 gph. Normal on takeoff is 25.6 



No matter how insulated your stainless steel firewall is, the fuel or oil will go down and aft along with the cooling air igniting on exhaust pipes, burning through your .040" aluminum bottom skin then your brake lines. Using the correct materials, assembled properly, inspected and leak tested will prevent many problems. In flight, early detection, confirm with increased fuel flow, 360 deg turn to look for smoke, then a fast descent if needed.

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Wayne G.

Last edited by rv10flyer on Tue Dec 17, 2013 7:07 am; edited 1 time in total

bill.peyton

Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO

Posted: Tue Dec 17, 2013 6:09 am Post subject: Re: Fiberfrax on the firewall

See this thread 



 http://www.vansairforce.com/community/showthread.php?t=37012&highlight=insulation+glue

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Bill
WA0SYV
Aviation Partners, LLC

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