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Date: Thu, 15 Feb 2007 13:24:15 -0500
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From: "Paul Lipps" <elippse@sbcglobal.net>
Subject: Oil separator
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    I made my oil separator out of a hair-spray can. I cut out a section =
of it to reduce its overall length, then, with a 1" wide overlapping =
brass strip, soldered the two parts back together. For the soldering, I =
used the paste in a tube which contains both solder and flux, which I =
brushed on the can parts and the brass strip, then hit that with a =
propane torch. I pulled out the nozzle on top and soldered the hole =
shut. I drilled a 5/8" hole in the bottom center, and one tangentially =
on the side at the bottom. For the breather outlet, I soldered a 5/8" =
brass tube up through the hole on the bottom that went almost to the top =
of the dome on top. For the breather inlet, I soldered a 5/8" brass tube =
into the tangential hole on the bottom side. I next made a 1/4" hole on =
the bottom near one edge and into this I soldered a 1/4" brass tube to =
serve as the oil outlet. Now this last is very important to get the =
separator to work properly. At the side at the bottom, directly opposite =
the breather inlet, I made a 1/4" tangential hole which goes in the =
opposite direction from the breather inlet, and soldered a 1/4" brass =
tube into it. Finally, I wrapped the whole thing in fiberglass to give =
it strength and add extra sealing to all the joints, and mounted it to =
the firewall. For the engine breather tube I used a 5/8" aluminum tube =
which goes to the back near the firewall; this is much lighter than =
rubber hose. I connected this tube to the separator's inlet tube with a =
short piece of hose. I provided a 1/4" tube from the bottom of the =
separator to the bottom of the oil filler tube for drain-back, and a =
piece of 5/8" aluminum tube, connected to the separator's breather =
outlet with a short piece of hose, to go to the bottom of the cowling. =
Lastly, I connected the 1/4" tangential fitting to a source of outside =
dynamic flow. The purpose of this, and why many separators do not work, =
is to provide a cold counter-flow against the breather flow to =
condense-out the hot oil vapors. That's why the Airwolf separator =
requires an inlet from your vacuum pump's outlet.
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<DIV><FONT face=3DArial>&nbsp;&nbsp;&nbsp; I made my oil separator out =
of a=20
hair-spray can. I cut out a section of it to reduce its overall length, =
then,=20
with a 1" wide overlapping&nbsp;brass strip, soldered the two parts back =

together. For the soldering, I used the paste in a tube which contains =
both=20
solder and flux, which I brushed on the can parts and the brass strip, =
then hit=20
that with a propane torch. I pulled out the nozzle on top and soldered =
the hole=20
shut. I drilled a 5/8" hole in the bottom center, and =
one&nbsp;tangentially on=20
the side at the bottom. For the breather outlet, I soldered a 5/8" brass =
tube up=20
through the hole on the bottom that went almost to the top of the dome =
on top.=20
For the breather inlet, I soldered a 5/8" brass tube into the tangential =
hole on=20
the bottom side. I next made a 1/4" hole on the bottom near one edge and =
into=20
this I soldered a 1/4" brass tube to serve as the oil outlet. Now this =
last is=20
very important to get the separator to work properly. At the side at the =
bottom,=20
directly opposite the breather inlet, I made a 1/4" tangential hole=20
which&nbsp;goes in&nbsp;the opposite direction from the breather inlet, =
and=20
soldered a 1/4" brass tube into it. Finally, I wrapped the whole thing =
in=20
fiberglass to give it strength and add extra sealing to all the joints, =
and=20
mounted it to the firewall. For the engine breather tube I used a 5/8" =
aluminum=20
tube which goes to the back near the firewall; this is much lighter than =
rubber=20
hose. I connected this tube to the separator's inlet tube with a short =
piece of=20
hose. I provided a 1/4" tube from the bottom of the separator to the =
bottom of=20
the oil filler tube for drain-back, and a piece of 5/8" aluminum tube, =
connected=20
to the separator's breather outlet with a short piece of hose, to go to =
the=20
bottom of the cowling. Lastly, I connected the 1/4" tangential fitting =
to a=20
source of outside dynamic flow. The purpose of this, and why many =
separators do=20
not work, is to provide a cold counter-flow against the breather flow to =

condense-out the hot oil vapors. That's why the&nbsp;Airwolf=20
separator&nbsp;requires an inlet from your vacuum pump's=20
outlet.</FONT></DIV></BODY></HTML>

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