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11-25-2020, 10:00 AM
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Join Date: May 2020
Location: Seattle
Posts: 38
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Which stainless rivets for firewall and where did you buy them?
From research on the forums it seems like stainless rivets are the way to go on the firewall for protection. I'm wondering what part number you are using and where you got them.
I found (and ordered) a very small amount of MS20427F3 and F4 (with -X suffix for length) from Spencer's Aircraft but they had extremely limited sizing and I don't want to be cutting rivets. I couldn't find any on ACS.
1) Are my part numbers correct for the SS rivets suggested for the firewall?
2) Where are you buying yours?
__________________
Flying a 182 while building a -10.
Emp completed September 2020
Fuse started October 2020
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11-25-2020, 11:01 AM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,536
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The thing about researching something like this on the forums is that you get a lot of folks that have never finished an airplane who have lots of time to postulate on forums....
More than 10,000 RV’s are flying, and I would wager that the majority of them are using the aluminum rivets that Van’s specified on the plans. And I know of no bad incidents that have occurred because of it - never heard of a single one (and I have a pretty broad information gathering system in experimental aviation).
Build it how you’re comfortable with, of course - but be careful about which rabbit holes you go down - too many of them connect to a labyrinth from which you’ll never escape....
__________________
Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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11-25-2020, 11:26 AM
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Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,352
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Be careful in your SS choice..
As Paul reflects, it my lead to other things you aren't prepared for. I work in the heavy jet industry and shot many a SS rivet, actually the Monel being the best choice, however, it can lead to disaster if you have a short edge margin, or need to drill one back out. I have yet to read a factual report about a burn through issue worth worrying about to that level...just stay per plans and move in is what I would suggest.
__________________
Bill E.
RV-4/N76WE
8A7 / Advance NC
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11-25-2020, 11:40 AM
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Join Date: Mar 2007
Location: WARNER ROBINS, GA
Posts: 464
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I personally know 2 engineers that have elected to change certain parts on their RV builds. After all, they ARE engineers. Both started their builds years ahead of me. NEITHER have finished their RVs. I’ve been flying for over 3 years. They like to look at their project and talk about how they’ve improved their build. Maybe some day they fly. Maybe not. Listen to Paul.
__________________
Keith
RV 7A RV #9700 May 2017
N325KS the Flying “K”
Built in SoCal KCCB, now in GA @ KPXE
600+ Hours & 7X cross the USA
OSH flyin 2018 & 2019 & Petit Jean 2019
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11-25-2020, 11:53 AM
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Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,726
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I have seen the results of a fuel fed engine compartment fire on an RV (not mine).
Do not be concerned with aluminum firewall rivets.
The heat of the fire will follow the normal airflow pattern to exit at the bottom of the cowl.
DO be concerned with the aluminum floorboards under the rudder pedals.
On the observed craft, there was a melted hole in that area.
It has been suggested to cover some of the bottom skin with stainless.
While I have not done it (the suggestion was post construction), I think it is a good thing to consider.
__________________
Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
Last edited by rzbill : 11-25-2020 at 11:55 AM.
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11-25-2020, 12:14 PM
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Join Date: Dec 2014
Location: Just Minutes from KBVI!
Posts: 1,128
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For what it's worth, I considered using Monel rivets on the firewall, but decided to build with the standard aluminum rivets. My reasoning was that since I plan to fire insulate the firewall as discussed in other threads here anyway, that the aluminum rivets would be adequately protected in the event of a fire by the insulation and titanium sheet over the engine side of the firewall.
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11-25-2020, 01:41 PM
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Join Date: Oct 2005
Location: 08A
Posts: 9,871
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Quote:
Originally Posted by 1001001
For what it's worth, I considered using Monel rivets on the firewall, but decided to build with the standard aluminum rivets. My reasoning was that since I plan to fire insulate the firewall as discussed in other threads here anyway, that the aluminum rivets would be adequately protected in the event of a fire by the insulation and titanium sheet over the engine side of the firewall.
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By test, they are.
__________________
Dan Horton
RV-8 SS
Barrett IO-390
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11-25-2020, 07:57 PM
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Join Date: May 2020
Location: Seattle
Posts: 38
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Ok, I've been convinced to move forward with my plan B, which was to use the aluminm rivets. I was planning on the forward side firewall protection and the under belly to keep 'normal'rv10 heat away from the tunnel (still need to figure out how to attach the stainless to the alum skin).
__________________
Flying a 182 while building a -10.
Emp completed September 2020
Fuse started October 2020
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11-25-2020, 08:39 PM
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Join Date: Jan 2008
Location: Ashland, OR
Posts: 2,798
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Quote:
Originally Posted by Ironflight
.... - but be careful about which rabbit holes you go down - too many of them connect to a labyrinth from which you’ll never escape....
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Spoken by a hobby spelunker!  
__________________
Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 635
LS6-15/18W sailplane SOLD
bought my old LS6-A back!! 
VAF donation Dec 2020
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11-25-2020, 09:15 PM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,536
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Quote:
Originally Posted by scsmith
Spoken by a hobby spelunker!  
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Uh, point of order...calling a Caver a “spelunker” is like calling a marathon runner a “jogger”.....
__________________
Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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