Received-SPF: pass
 receiver=logan.com; client-ip=209.85.218.222; envelope-from=lehanover@gmail.com
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:date:message-id:subject:from:to:content-type;
        b=XBk9pomMpda5jPZn94+f8Xr10Ow0McrIhY8nCAlvyCRdxvG3Pjpxzxm+0XeuUNIzeT
         k6g+k/WVZVINtSo509vHs7QEFYRlp01+K6D1o5ZAK7iWGWI9Zpba5sJr3xODw1KL+cYT
         wg4yzhPOViA4J0+ICd7CYEyZCTFkxTNyKr6y4=
MIME-Version: 1.0
Date: Thu, 11 Feb 2010 11:08:59 -0500
Message-ID: <1ab24f411002110808t5549ef5bs81d7ec59d53b9908@mail.gmail.com>
Subject: Blower fun
From: Lynn Hanover <lehanover@gmail.com>
To: flyrotary@lancaironline.net
Content-Type: multipart/alternative; boundary=00032555af2e6d26be047f555eef

--00032555af2e6d26be047f555eef
Content-Type: text/plain; charset=ISO-8859-1

Yes.  You can see the open lobes around the PSRU and how they relate to
the cowling in the first two pictures.  The 3rd picture has the openings
highlighted.  The 4th is a picture of how my Harley-Davidson generator
is mounted and the space available for the impeller.  The impeller will
be both a blower and a mount for the generator.  The whole space between
the PSRU mounting plate and the engine is now enclosed in a shroud (I
really need to take a picture of that).  The shroud is not as tight and
technically correct as I would have liked, but it's good enough for a
proof of concept.  If I get good results from it, it will be something
to work on for improvements after I'm flying.

The fan (impeller) of the VW style has a covered face, so it does not need a
shroud at all just a collector ring. It is also not required that a path or
inlet gallery be used, so long as an open flow path is available.

It would of course, be more effiecient if it is exposed to a direct path for
ram air, but it would work pretty well without it.

In olden times us aircooled VW owners had no defrost or heating
capabilities. You had to have a window rolled down a bit to let pressure out
of the sealed passenger compartment. And even with this idea, heating was
nearly nonexistant. The fix was to bore a 2" hole in the back bulkhead of
the package shelf. Insert a piece of exhaust pipe tubing with three tabs
bent out for pop revits. Sealed with silicone. The pipe extended into the
opening of the blower shroud on the engine.
The low pressure thus produced resulted in massive amounts of hot air
entering the passenger compartment, and defrost ducts. A small air filter
clamped over the pipe opening calmed the roar of the fan.

Lynn E. Hanover

--00032555af2e6d26be047f555eef
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div>Yes.=A0 You can see the open lobes around the PSRU and how they relate=
 to <br>the cowling in the first two pictures.=A0 The 3rd picture has the o=
penings <br>highlighted.=A0 The 4th is a picture of how my Harley-Davidson =
generator <br>
is mounted and the space available for the impeller.=A0 The impeller will <=
br>be both a blower and a mount for the generator.=A0 The whole space betwe=
en <br>the PSRU mounting plate and the engine is now enclosed in a shroud (=
I <br>
really need to take a picture of that).=A0 The shroud is not as tight and <=
br>technically correct as I would have liked, but it&#39;s good enough for =
a <br>proof of concept.=A0 If I get good results from it, it will be someth=
ing <br>
to work on for improvements after I&#39;m flying.<br></div>
<div>=A0</div>
<div>The fan (impeller) of the VW style has a covered face, so it does not =
need a shroud at all just a collector ring. It is also not required that a =
path or inlet gallery be used, so long as an open flow path is available.</=
div>

<div>=A0</div>
<div>It would of course, be more effiecient if it is exposed to a direct pa=
th for ram air, but it would work pretty well without it.=A0=A0</div>
<div>=A0</div>
<div>In olden times us aircooled VW owners had no defrost or heating capabi=
lities. You had to have a window rolled down a bit to let pressure out of t=
he sealed passenger compartment. And even with this idea, heating was nearl=
y nonexistant. The fix was to bore a 2&quot; hole in the back bulkhead of t=
he package shelf. Insert a piece of exhaust pipe tubing with three tabs ben=
t out for pop revits. Sealed with silicone. The pipe extended into the open=
ing of the blower shroud on the engine. </div>

<div>The low pressure thus produced resulted in massive amounts of hot air =
entering the passenger compartment, and defrost ducts. A small air filter c=
lamped over the pipe opening calmed the roar of the fan.</div>
<div>=A0</div>
<div>Lynn E. Hanover</div>

--00032555af2e6d26be047f555eef--