<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">One of the easiest and most flexible methods I have used is an oldie and goodie: 90 degree elbows from 1/8" copper or aluminum tube, through the fuse side next to the carb. The idea is to fit a piece of fuel tubing between the two nipples. No dots and tees necessary.<BR>
<BR>
The vent goes just behind the rear pick-up nipple. <BR>
<BR>
When the day is done, I simply disconnect the fuel line that goes to the carb or front nipple, and reconnect the line to the vent tubing. The tank is secured this way and will not leak; and the engine is freed from fuel feed to be run completely dry<BR>
<BR>
Matt Kebabjian<BR>
.
<BR>
<BR>
<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:<B>Re: Fuel tank vent location for Pumped 2-stroke engines & more </B><BR>
Date:4/18/2003 7:33:32 PM Eastern Daylight Time<BR>
From:<A HREF="mailto:KBlackw@snowhill.com">KBlackw@snowhill.com</A><BR>
Reply-to:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>
To:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>
<I>Sent from the Internet </I><BR>
<BR>
<BR>
<BR>
Incheol,<BR>
<BR>
The Webra is 2.145" and the OS is 1.896" from bottom of flange to center of<BR>
exhaust.<BR>
<BR>
I have had both Webra and 3M in my hands at the same time and the 3M is much<BR>
shorter in height than the Webra...but I didn't measure it.<BR>
<BR>
I bring the vent out through the FW and drop it out the bottom of the<BR>
airplane.<BR>
<BR>
Ken Blackwell<BR>
<BR>
----- Original Message -----<BR>
From: "Ihncheol Park" <PatternFlyer@msn.com><BR>
To: "NSRCA" <discussion@nsrca.org><BR>
Sent: Friday, April 18, 2003 5:41 PM<BR>
Subject: Fuel tank vent location for Pumped 2-stroke engines & more<BR>
<BR>
<BR>
> Hi,<BR>
> I have a question for those using OS 140, 3M 140/170, Webra 145 etc.<BR>
> I am sure that the 3M engines have only one line connecting the engine and<BR>
> fuel tank.<BR>
> Where do you people put the vent line? Firewall?<BR>
><BR>
> Also, would someone tell me the vertical distance from the bottom of<BR>
> mounting flange (thrust line) to the center line of the exhaust port of OS<BR>
> 140, 3M 140, Webra 145?<BR>
> Thank you,</BLOCKQUOTE><BR>
<BR>
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