Fuel tank vent location for Pumped 2-stroke engines & more

[Rcmaster199 at aol.com]

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.

The vent goes just behind the rear pick-up nipple. 

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

Matt Kebabjian
.


> Subj:Re: Fuel tank vent location for Pumped 2-stroke engines & more 
> Date:4/18/2003 7:33:32 PM Eastern Daylight Time
> From:<A HREF="mailto:KBlackw at snowhill.com">KBlackw at snowhill.com</A>
> Reply-to:<A HREF="mailto:discussion at nsrca.org">discussion at nsrca.org</A>
> To:<A HREF="mailto:discussion at nsrca.org">discussion at nsrca.org</A>
> Sent from the Internet 
> 
> 
> 
> Incheol,
> 
> The Webra is 2.145" and the OS is 1.896" from bottom of flange to center of
> exhaust.
> 
> I have had both Webra and 3M in my hands at the same time and the 3M is 
> much
> shorter in height than the Webra...but I didn't measure it.
> 
> I bring the vent out through the FW and drop it out the bottom of the
> airplane.
> 
> Ken Blackwell
> 
> ----- Original Message -----
> From: "Ihncheol Park" <PatternFlyer at msn.com>
> To: "NSRCA" <discussion at nsrca.org>
> Sent: Friday, April 18, 2003 5:41 PM
> Subject: Fuel tank vent location for Pumped 2-stroke engines & more
> 
> 
> > Hi,
> > I have a question for those using OS 140, 3M 140/170, Webra 145 etc.
> > I am sure that the 3M engines have only one line connecting the engine 
> and
> > fuel tank.
> > Where do you people put the vent line?  Firewall?
> >
> > Also, would someone tell me the vertical distance from the bottom of
> > mounting flange (thrust line) to the center line of the exhaust port of 
> OS
> > 140, 3M 140, Webra 145?
> > Thank you,

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