Inverted motors

[Bob Pastorello]

The only effective fix I have ever heard of was to make a relatively large,
horizontal loop of fuel tubing, that was higher than the highest point of
the fuel system before the spraybar, when the plane was sitting normally.  I
don't have first hand experience with this, but was told it "worked".

The only other method is to have the supply line to the carb accessible from
the outside of the fuse, and either break it/plug it, or use a clamp to shut
off the line.

Bob Pastorello
rcaerobob at cox.net
www.rcaerobats.net


----- Original Message ----- 
From: "John Pavlick" <jpavlick at idseng.com>
To: <discussion at nsrca.org>
Sent: Tuesday, August 17, 2004 9:44 PM
Subject: Inverted motors


> Has anybody found a good way to mount a non-pumped motor inverted without
> having a fuel tank siphoning problem? Most of the planes I have with
> inverted motors had this problem originally, but I moved the tank down low
> enough to stop it. My latest project doesn't have enough room to move the
> tank so I'm hoping there's something else I can do. I'm using an O.S.
.61SF
> Long Stroke so it has idle mixture control but I don't want it to start
> dripping fuel as soon as I fill the tank. Thanks in advance to anyone who
> offers any suggestions.
>
> John Pavlick
> http://www.idseng.com
>
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