Muffler tank pressure

[nik.middleton at idl-bt.com]

Thanks Bob,
 
That was exactly my concern,  if I spend most of the time inverted, how do I
stop the fuel leaking.  Sounds like there's not much I can do.
 
rgds
 

-----Original Message-----
From: faipatrn [mailto:faipatrn at msn.com]
Sent: Wednesday, September 18, 2002 13:21
To: discussion at nsrca.org
Subject: Re: Muffler tank pressure


The Zenoah has a pumped gas carb.  Doesn't need pressure, and doesn't work
well if closed system.  If you're concerned about gas overflow, put a gas
check valve in the vent line with a short piece of tubing, which you will
remove when filling the tank.  When installed, it will only let air INTO the
tank, and not permit gasoline to overflow.
    However, in hot temps, pressure will build in the tank, and Walbro carbs
don't permit free flow when not running, so something will give someplace.
    I'd recommend just a standard open vent.
 
Bob P

----- Original Message ----- 
From: nik.middleton at idl-bt.com <mailto:nik.middleton at idl-bt.com>  
To: discussion at nsrca.org <mailto:discussion at nsrca.org>  
Sent: Wednesday, September 18, 2002 7:12 AM
Subject: Muffler tank pressure

Hi guys,
 
I'm experimenting with a plane I want to try some artistic flying with.  I'm
intending fitting a Zenoah Gas engine.  My question is, what;s the best way
of putting pressure on the tank, in that I want a closed system.  Do I just
fit a nipple on the standard muffler?
 
rgds
 

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