12 volt blower

Submitted by Anonymous on

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From: <N295VV [at] aol.com>
Sender: Marvin Kaye <marv [at] lancaironline.net>
Subject: 12 volt blower
Date: Mon, 09 Dec 2002 19:43:56 -0500
To: <lml>

West Marine has a nice 12 v. blower in their boat accessories catalog.  That being said, if your NACA vent is properly placed, you probably don't need one.  I would wait until your plane is finished--you can always add one in the tailcone by your inspection port.  Just run a pair of wires back there when building, which is a good idea anyway, in case some other goody comes available in the future that you can't resist.



David Jones

12 volt blower

Submitted by Anonymous on

From: Skip Slater <skipslater [at] earthlink.net>
Sender: Marvin Kaye <marv [at] lancaironline.net>
Subject: Re: [LML] 12 volt blower
Date: Tue, 10 Dec 2002 00:30:55 -0500
To: <lml>
Message Header


Undecoded Message
   There have been a few comments about
the efficiency of the NACA duct on the tail negating the need for a cabin fan on
the ES or IV.  Inflight this is true.  Those of us who advocate them
will all attest to their effectiveness on the ground.  I don't use my fan
at all in flight, but unless it's a pretty cool day, it's on every moment I'm on
the ground.  In the summer, I consider it essential, as the cabin
can become a sweltering greenhouse in the sun.  I can still recall the
image of Orin after doing my first flight on August 13th.  He had the fan
on and 4 overhead vents all pointed at his head and still emerged drenched
in sweat. 
   The bottom line is that the NACA duct
does not become effective until you're at flying speed.  Between
pre-start, after start, taxi, runup, and after landing taxi up until you
shut down, there is plenty of time every flight that you'll be glad you
installed a fan.
   My .02 worth.
   Skip Slater
   N540ES

12 volt blower

Submitted by Anonymous on

From: Marvin Kaye <marv [at] lancaironline.net>
Subject: Re: [LML] Re: 12 volt blower
Date: Tue, 10 Dec 2002 07:39:03 -0500
To: <lml>
Message Header


Undecoded Message

Posted for "Douglas W. Johnson, MD" <Lancair1 [at] bellsouth.net>:



I agree with Skip 100%.  Unless you have an a/c unit, the blower is a

godsend on hot days on the ground.  It is also useful during pressurized

flight, as the air around your head becomes somewhat stagnant due to lack of

airflow high in the cabin once the pressure bulkhead door closes off.  In

non-pressurized flight, I turn it off due to the abundant airflow from the

NACA scoop.

Doug Johnson

620TT in N654DM


     The bottom line is that the NACA duct does not become effective until

you're at flying speed.  Between pre-start, after start, taxi, runup, and

after landing taxi up until you shut down, there is plenty of time every

flight that you'll be glad you installed a fan.<<<

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