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Troy Maynor
Joined: 10 Jan 2006
Posts: 162
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 Posted: Mon Mar 19, 2007 5:16 pm Post subject: Firewall Insulation |
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Hi Again All,
The front of the firewall will need some sound/heat barrier. Also, several
bits to mount. Do I mount or build everything to the front THEN cut holes in
it all to mount rectifier, and all the other assorted parts to it? I can't
imagine putting the insulation over anything that is on the firewall, unless
it would be the shock mounts that are used in the club instrument panel
mounting mod. What else do I consider?
What is the favorite insulation that others have used that is available in
the USA?
What about sound deadening on the aft side of the firewall?
Troy Maynor
N120EU Europa Monowheel Classic
Left to finish:
Paint,(some) interior,engine install, (some) wiring.
Weaverville, NC USA
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ward.t(at)xtra.co.nz
Guest
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| Posted: Mon Mar 19, 2007 6:09 pm Post subject: Firewall Insulation |
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Troy,
I installed the firewall insulation with aluminum reflexive coat facing forward, first.
Then drilled holes through it and the firewall where necessary for wires etc. Mounting the starter relay etc on the side of the battery for the classic (starboard) and the rectifier etc on the other side (port) of the plenum chamber. I mounted them on an aluminum plate away from the firewall, the thickness of the insulation by installing washers between the firewall and plate.
The plate also can be grounded for all necessary grounding of electrical components.
I also installed sound proofing throughout the cabin including the aft side of the firewall. Again do this first.
Hope it is of help.
Tim
--
Tim Ward
12 Waiwetu Street
Fendalton
Christchurch.
Ph. 64 33515166
MOB 0210640221
ward.t(at)xtra.co.nz
---- Troy Maynor <wingnut54(at)charter.net> wrote:
| Quote: | Hi Again All,
The front of the firewall will need some sound/heat barrier. Also, several
bits to mount. Do I mount or build everything to the front THEN cut holes in
it all to mount rectifier, and all the other assorted parts to it? I can't
imagine putting the insulation over anything that is on the firewall, unless
it would be the shock mounts that are used in the club instrument panel
mounting mod. What else do I consider?
What is the favorite insulation that others have used that is available in
the USA?
What about sound deadening on the aft side of the firewall?
Troy Maynor
N120EU Europa Monowheel Classic
Left to finish:
Paint,(some) interior,engine install, (some) wiring.
Weaverville, NC USA
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davidjoyce(at)doctors.org
Guest
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| Posted: Tue Mar 20, 2007 2:04 am Post subject: Firewall Insulation |
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Troy, My 914 installation has worked just fine without any form of heat or
sound insulation on the firewall. The amount of heat that comes through the
firewall is probably enough to stop your feet freezing in winter but not
enough to be noticed in summer, and noise levels are such the you can
converse in the cruise without headsets if you really wanted to. Can see no
point in adding weight and complexity. On the other hand I did line the
cockpit with 2mm foam covered by that synthetic suede material (whose name
escapes me), in the hope that this would reduce noise levels and undue
cooling at altitude.Regards, David Joyce G-XSDJ
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ami(at)mcfadyean.freeserv
Guest
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| Posted: Tue Mar 20, 2007 2:18 pm Post subject: Firewall Insulation |
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Agreed for the monowheel.
On the non-monowheel without the well ventilated central tunnel and with the
original metal firewall, there is too much heat that builds up in the tunnel
during a long flight on a hot day, resulting in the fuel eventually getting
very warm too.
In this instance there is benefit in (thermally) insulating the central part
of the firewall.
Duncan McF
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