REFLECTOR:Re: Sump vent

KeithHallsten reflector@tvbf.org
Thu, 24 Jul 2003 19:05:53 -0700


Pat,

I strongly suspect you are right, but I haven't proven this experimentally.
That's why I'd be willing to forego the sump vent.  With 3/8" vents to the
strakes and 3/8" fuel lines from the strakes to the sump, I think the need
for a vent from the sump tank is unlikely.

By the way, my "Y" exhaust stacks from Custom Aircraft Parts arrived and
look good.  Thanks for the recommendation!

Keith


----- Original Message ----- 
From: "Pat Shea" <xl340hp@yahoo.com>
To: <reflector@tvbf.org>
Sent: Thursday, July 24, 2003 12:03 PM
Subject: Re: REFLECTOR:Low fuel light


> FWIW - If you were to block off the fuel lines going  from the strakes to
the sump, drain your sump completely, close the sump vent, and then release
the fuel lines, the sump would refill almost completely.  The air in the
sump simply vents via the fuel inlet lines from whichever strake is at a
lower pressure.  The pocket of air at the top of a sumps in plane's without
sump vents is just air trapped above the fuel inlet lines.