Today's Message Index:
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1. 03:58 AM - Fabric Wrap Exhaust (Craig Payne)
2. 06:50 AM - Re: Fabric Wrap Exhaust (Mark Wheeler)
3. 08:14 PM - So you want to be an airshow pilot? (Barry Hancock)
Message 1
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| Subject: | Fabric Wrap Exhaust |
There's a problem with wrapping the exhaust systems on our engines: oil. Oil accumulates
from *nowhere* and *everywhere* at the same time and will migrate through
that high temp fabric until the day a fire starts. Perhaps it will happen
while you still are on the ground, perhaps.
Reno racers with nice dry flat engines use the wrap, especially on tightly cowled
Formula midgets and Sport class racers. Let me know if anyone sees it done
on round engines.
Craig Payne
cpayne@joimail.com
Message 2
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| Subject: | Fabric Wrap Exhaust |
Craig,
You are correct. The wrap will wick the oil then catch fire.
The wrap also, is not used for sealing in gasses. It is used as a shield to
keep heat in and out. For turbocharged motors to keep it in, as hotter
gasses move faster. Non turbo motors, to keep it from radiating heat to
other items in the general area. Plus the long term damage done to the
exhaust tubing under it makes it not a good idea. The exhaust on our flying
tool sheds.. is not that cheap to replace.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Craig Payne
Sent: Sunday, September 09, 2007 6:58 AM
Subject: Yak-List: Fabric Wrap Exhaust
There's a problem with wrapping the exhaust systems on our engines: oil. Oil
accumulates from *nowhere* and *everywhere* at the same time and will
migrate through that high temp fabric until the day a fire starts. Perhaps
it will happen while you still are on the ground, perhaps.
Reno racers with nice dry flat engines use the wrap, especially on tightly
cowled Formula midgets and Sport class racers. Let me know if anyone sees it
done on round engines.
Craig Payne
cpayne@joimail.com <mailto:cpayne@joimail.com>
Message 3
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| Subject: | So you want to be an airshow pilot? |
>
> http://www.msnbc.com/modules/interactive.aspx?
> type=ss&launch 628622,3842331&pg=1
Ugg....
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