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Scott,
Don't know where your mechanic was coming from about "cooling" the
vacuum pump with our little engines. Some Lycoming and Continental
engines
have this pump mounted on the aft accessory case behind the cylinders.
Depending upon installation, no direct cooling is provided and they do
just
fine there. The larger engines, the ones with turbochargers,
intercoolers,
and the like, where it gets crowded in the area between the firewall and
engine I've seen directed cooling air to these pumps and other
accessories.
The winter kit I once had covered the entire opening below the
propeller plus an oil sump blanket and induction blanket. Even with these
installed, oil temperatures would still be low. This experience is based
on
flying this aircraft in Wisconsin winters.
Walt Uebele
1946 415-C
N94113
-----Original Message-----
From: Scott Morgan [mailto:[EMAIL PROTECTED]
Sent: Thursday, December 30, 2004 6:06 AM
To: [email protected]
Subject: [COUPERS-TECH] airflow in cold weather
----[Please read http://ercoupers.com/disclaimer.htm before following any
advice in this forum.]----
I have had one mechanic tell me that I should cover the opening just below
the prop only partially for flying in cold weather. He says that the
vacuum
pump needs to be cooled or it could be ruined. Another mechanic tells me I
should cover the opening completely. This is on an A2-A with a C90 engine.
I
was wondering if anyone could give me a suggestion, based on your
experience. Thanks Scott Morgan 5458F
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