REFLECTOR: firewall protection

[Keith Hallsten]

Doug,

 

It's your airplane, and as an "Experimental" builder, the only one who sets
the standards is you.  Convince yourself that you are doing the right thing
after considering all of the ramifications and input of others, then go
forward.

 

I have the SS over the fiberfrax on my firewall, and I'm using the firewall
pass-through seals available from EPM.AV (see
http://www.epm-avcorp.com/tubeseal.html) 

 

Regards,

 

Keith Hallsten

 

 

  _____  

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Douglas Holub
Sent: Sunday, January 06, 2008 6:46 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: firewall protection

 

Thanks for the advice, everyone. I did a little digging and found that RAF
allows aluminum and fiberfrax in the long ez's. Apparently the fiberfrax
provides all of the protection; the aluminum just protects the fiberfrax
from getting beat up. From CP # 25:

 

FIREWALL - LONG-EZ AND VARIEZE
We now approve the use of fiberfrax (a space age ceramic material) as a 
replacement for asbestos. Since fiberfrax is as good a fire barrier as 
stainless steel, we approve substituting .016 2024 T-3 aluminum for the 
stainless. This saves almost 2 lb at the firewall. Both Wicks and 
Aircraft Spruce are now shipping kits with fiberfrax and aluminum.

Installation of fiberfrax is as follows: Complete airframe 
construction through cowling installation, then remove everything from 
the firewall bulkhead, and install fiberfrax with a bead of silicone 
around the edge of the bulkhead. Do not wet out fiberfrax with epoxy. 
Now install the .016 2024 T-3 aluminum which is required to protect the 
fragile fiberfrax, from local damage, abrasion etc. See plans changes 
section of this newsletter. 

----- Original Message ----- 

From: Laurence Coen <mailto:lwcoen at hotmail.com>  

To: Velocity Aircraft <mailto:reflector at tvbf.org>  Owners and Builders list 

Sent: Sunday, January 06, 2008 12:09 PM

Subject: Re: REFLECTOR: firewall protection

 

In the "old days", it was galvinized mild steel, never aluminum.

 

Larry Coen

N136LC

----- Original Message ----- 

From: Alex <mailto:velocity_pilot at verizon.net>  Balic 

To: 'Velocity Aircraft <mailto:reflector at tvbf.org>  Owners and Builders
list' 

Sent: Sunday, January 06, 2008 9:06 AM

Subject: Re: REFLECTOR: firewall protection

 

Stainless steel for the most part- I got mine from Wicks- pretty reasonable-
not sure why the kit does not come with it really.

We do have a slight advantage, in that the flames would tend to flow away
from our firewalls, but that aluminum will soften and dislodge pretty fast I
would think-  stainless is the way to go Doug- I have a good  air powered
nibbler you can borrow to cut the stuff- pretty difficult with snips- until
you get down to just trimming off thin slivers- just let me know.- I would
like to come by and visit your project anyway!

 

Alex

 


  _____  


From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Douglas Holub
Sent: Saturday, January 05, 2008 10:34 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: firewall protection

 

What do they use in aluminum airplanes?

----- Original Message ----- 

From: Matt Bucko <mailto:mbuc310 at cox.net>  

To: Velocity Aircraft <mailto:reflector at tvbf.org>  Owners and Builders list 

Sent: Saturday, January 05, 2008 10:13 PM

Subject: Re: REFLECTOR: firewall protection

 

Lighter... and it melts almost instantly in a fire.  I saw some info on an
aluminum air box and one made out of SS. In a fire, the aluminum box melted
completely, the SS box held together fine. The box was a hot air diverter
for cabin heat. Good demo on why a  heat shield should not be aluminum.
Fire could be from burning fuel or oil, electrical, or an exhaust leak
spewing hot gas onto the shield. 

Matt

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
Behalf Of Douglas Holub
Sent: Saturday, January 05, 2008 9:03 PM
To: reflector at tvbf.org
Subject: REFLECTOR: firewall protection

Why wouldn't I use 1/16" aluminum instead of 1/16" stainless steel to cover
the fiberfrax on my firewall? It's lighter.

 

Doug Holub


  _____  


_______________________________________________
To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector

Visit the gallery!  www.tvbf.org/gallery
user:pw = tvbf:jamaicangoose
Check new archives: www.tvbf.org/pipermail
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html


  _____  


_______________________________________________
To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector

Visit the gallery!  www.tvbf.org/gallery
user:pw = tvbf:jamaicangoose
Check new archives: www.tvbf.org/pipermail
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html


  _____  


_______________________________________________
To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector

Visit the gallery!  www.tvbf.org/gallery
user:pw = tvbf:jamaicangoose
Check new archives: www.tvbf.org/pipermail
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tvbf.org/mailman/private/reflector/attachments/20080106/f3ff338e/attachment-0001.htm