[rebel-builders] Non-magnetic stainless firewall?
Posted: Sun Feb 19, 2012 6:31 pm
Alum is non magnetic and is much softer than any type of steel.
Almost all Stainless in totally non magnetic, Only a few have the very
slightest magnetic tendency, like 5% of that of hi carbon content steel.
Hi carbon content steel will almost grab your magnet when you get it close.
If I may suggest the regs for small Airplane Design, should be in part 23.
I do not think it is in part 43, or 91.
Advisory Circular AC 43-13- will contain a lot of usable data on how to
do things and it should be on your work bench. I consider it required
reference material.
Dick Wampach SR-108 N331RW
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
schaumr@dcsol.com
Sent: Wednesday, August 04, 2010 6:26 AM
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Non-magnetic stainless firewall?
Hang on.....an earlier message states that this type of stainless might be
non- magnetic.
I admit the color is slightly different from the surrounding aluminum, and I
would love to believe this is stainless. Maybe it wasn't that easy to file
after
all? How the heck do I tell?
Rob
Now I'm not so sure On 8/4/2010 4:28 AM, klehman@albedo.net wrote to
rebel-builders:
-> Curtis
->
-> Some of us riveted a thin flat sheet of stainless on the forward side
-> of
-> the aluminum. Actually makes for a stronger firewall with a little less
-> risk of damage I'm told.
->
-> I understand that fibrefrax cloth also meets the requirement. It and
-> the
-> glue is available from Spruce. I did not use it because I figured it had
-> to be covered with something else anyway to keep it from eventually
-> becoming saturated with oil.
->
-> I don't know why MAM considered aluminum acceptable for early kits.
->
-> Ken
->
->
-> Curtis Langholz wrote:
-> > Rob, Great topic for sure.... I purchased kit # 175r that had been
-> > in storage for a long time. When I purchased it I bought the
-> > upgraded manuals from MAM and got a tour of the factory plus talked
-> > to Daryl about my engine choice. He recomended the 3" shortening of
-> > the boot cowl which I did as well as the fload stiffeners and motor
-> > mount doublers. I was feeling really good now that it was
-> > complete.... I check the MAM bulletins regurlarly as well and there
-> > has not been any mention of the firewall being aluminum or
-> > stainless. It is very frustrating to have all this time putting it
-> > together to find out MAM was so cheap to use an aluminum firewall
-> > that is a safety hazard. Can anyone give me a suggestion of what I
-> > should do with it at this point? Although it is a setback in the
-> > building process, it does need to be addressed. Thanks for bringing
-> > up the question about the firewall material.
-> >
-> > Curtis
-> >
-> >
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Almost all Stainless in totally non magnetic, Only a few have the very
slightest magnetic tendency, like 5% of that of hi carbon content steel.
Hi carbon content steel will almost grab your magnet when you get it close.
If I may suggest the regs for small Airplane Design, should be in part 23.
I do not think it is in part 43, or 91.
Advisory Circular AC 43-13- will contain a lot of usable data on how to
do things and it should be on your work bench. I consider it required
reference material.
Dick Wampach SR-108 N331RW
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
schaumr@dcsol.com
Sent: Wednesday, August 04, 2010 6:26 AM
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Non-magnetic stainless firewall?
Hang on.....an earlier message states that this type of stainless might be
non- magnetic.
I admit the color is slightly different from the surrounding aluminum, and I
would love to believe this is stainless. Maybe it wasn't that easy to file
after
all? How the heck do I tell?
Rob
Now I'm not so sure On 8/4/2010 4:28 AM, klehman@albedo.net wrote to
rebel-builders:
-> Curtis
->
-> Some of us riveted a thin flat sheet of stainless on the forward side
-> of
-> the aluminum. Actually makes for a stronger firewall with a little less
-> risk of damage I'm told.
->
-> I understand that fibrefrax cloth also meets the requirement. It and
-> the
-> glue is available from Spruce. I did not use it because I figured it had
-> to be covered with something else anyway to keep it from eventually
-> becoming saturated with oil.
->
-> I don't know why MAM considered aluminum acceptable for early kits.
->
-> Ken
->
->
-> Curtis Langholz wrote:
-> > Rob, Great topic for sure.... I purchased kit # 175r that had been
-> > in storage for a long time. When I purchased it I bought the
-> > upgraded manuals from MAM and got a tour of the factory plus talked
-> > to Daryl about my engine choice. He recomended the 3" shortening of
-> > the boot cowl which I did as well as the fload stiffeners and motor
-> > mount doublers. I was feeling really good now that it was
-> > complete.... I check the MAM bulletins regurlarly as well and there
-> > has not been any mention of the firewall being aluminum or
-> > stainless. It is very frustrating to have all this time putting it
-> > together to find out MAM was so cheap to use an aluminum firewall
-> > that is a safety hazard. Can anyone give me a suggestion of what I
-> > should do with it at this point? Although it is a setback in the
-> > building process, it does need to be addressed. Thanks for bringing
-> > up the question about the firewall material.
-> >
-> > Curtis
-> >
-> >
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