VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-7/7A
Register FAQ Members List Calendar Today's Posts

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 09-23-2015, 09:42 PM
DanH's Avatar
DanH DanH is offline
 
Join Date: Oct 2005
Location: 08A
Posts: 9,500
Default

Quote:
Originally Posted by wirejock View Post
I see Proseal used between the skin and firewall flange. Why?
Some builders like a sealant there. Has nothing to do with fire protection.
__________________
Dan Horton
RV-8 SS
Barrett IO-390
Reply With Quote
  #12  
Old 09-23-2015, 11:55 PM
rockwoodrv9 rockwoodrv9 is offline
 
Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,645
Default

If stainless is the best firewall, would there be a reason to use a layer of stainless over the fiberfrax rather than foil? How about natural cork?

I am building a 9A. I have a light battery and a fixed pitch Catto. The front end of my plane is light and I believe I will have to put a crush plate to get the CG where I want. The firewall isnt as far forward as the crush plate, but maybe the weight of a second layer of stainless wouldn't be that much of a penalty.

Any thoughts? I will be re-installing my engine next week and still trying to figure out the best options.
__________________
rockwoodrv9a
Williamston MI
O-320 D2A
Awaiting DAR Inspection
Reply With Quote
  #13  
Old 09-24-2015, 11:06 AM
Bevan Bevan is offline
 
Join Date: Sep 2007
Location: BC
Posts: 1,674
Default

Quote:
Originally Posted by wirejock View Post
I see Proseal used between the skin and firewall flange. Why?
The cowl area can be pressurised slightly with reference to the cockpit. Therefore any smells, fumes, or smoke from the engine area may be forced into the cockpit under certain circumstances.

Bevan
__________________
RV7A Flying since 2015
O-360-A1F6 (parallel valve) 180HP
Dual P-mags
Precision F.I. with AP purge valve
Vinyl Wrapped Exterior
Grand Rapids EFIS
Located in western Canada
Reply With Quote
  #14  
Old 09-24-2015, 12:15 PM
David Paule David Paule is offline
 
Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,435
Default

I think Dan recommends stainless foil.

Dave
Reply With Quote
  #15  
Old 09-24-2015, 12:51 PM
rockwoodrv9 rockwoodrv9 is offline
 
Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,645
Default

Right on the foil. Just wondering if it would be easier to clean and maintain if it was a sheet.
__________________
rockwoodrv9a
Williamston MI
O-320 D2A
Awaiting DAR Inspection
Reply With Quote
  #16  
Old 09-24-2015, 01:15 PM
Raymo's Avatar
Raymo Raymo is offline
 
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 2,189
Default

Quote:
Originally Posted by rockwoodrv9 View Post
Right on the foil. Just wondering if it would be easier to clean and maintain if it was a sheet.
Weight would be the primary reason to use foil with its primary purpose, based on DanH posts, is to hold the fiberfrax in place so it can do its job insulating. If weight were not a concern, thicker should, in theory, be better.

my .20 (inflation).
__________________
Ray
RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines (aka Hoser)
Reply With Quote
  #17  
Old 09-24-2015, 01:54 PM
Lucio I-NLCM's Avatar
Lucio I-NLCM Lucio I-NLCM is offline
 
Join Date: May 2013
Location: Milano Italy
Posts: 78
Default firewall insulation

here how I did last year after read tons of threads , finally I followed the Dan way.
Thanks Dan

__________________
Lucio
Milano Italy
Blue-7
Reply With Quote
  #18  
Old 09-24-2015, 03:28 PM
rockwoodrv9 rockwoodrv9 is offline
 
Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,645
Default

Thanks for the picture Lucio. My daughter is in Italy now on vacation!

Quote:
Originally Posted by Lucio I-NLCM View Post
here how I did last year after read tons of threads , finally I followed the Dan way.
Thanks Dan

__________________
rockwoodrv9a
Williamston MI
O-320 D2A
Awaiting DAR Inspection
Reply With Quote
  #19  
Old 09-25-2015, 07:30 AM
Lucio I-NLCM's Avatar
Lucio I-NLCM Lucio I-NLCM is offline
 
Join Date: May 2013
Location: Milano Italy
Posts: 78
Default

Rockwood
Good choice Italy for vacation, I hope you daughter plans, after all, one day to visit the expo in Milano.
__________________
Lucio
Milano Italy
Blue-7
Reply With Quote
  #20  
Old 09-25-2015, 08:26 AM
Ron RV8's Avatar
Ron RV8 Ron RV8 is offline
 
Join Date: Nov 2010
Location: Okanagan Valley BC, Canada
Posts: 483
Default

Another way, 1/8 fiberfrax with .015 stainless (forward of the main firewall). Needed weight forward anyways and wanted something more robust than foil.... Forward stainless sheet is not sealed around the perimeter to allow off gassing of the fiberfrax in case of fire.

__________________
Ron Townson
Okanagan Valley BC, Canada
RV-8 Completed Dec 2013

Membership renewed Sept 8, 2019
Reply With Quote
Reply



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:52 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.