REFLECTOR:Low fuel light
KeithHallsten
reflector@tvbf.org
Wed, 23 Jul 2003 20:27:47 -0700
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Re: REFLECTOR:Low fuel lightBob,
Personally, I try to fly coordinated turns, so the strake drains to the =
sump tank stay covered with fuel. However, if a little air were =
introduced to the sump tank it would not interfere with the operation of =
the fuel system - you would just have a bubble in the sump tank. If the =
bubble were large, it might make its way back into one of the strake =
tanks, but that's of little concern, as long as the volume of air =
remains only a percentage of the volume of the sump tank. The next time =
you fill the tanks, just exercise the sump vent valve to allow any =
trapped air to escape.
Keith
=20
----- Original Message -----=20
From: Bob Kuc=20
To: reflector@tvbf.org=20
Sent: Wednesday, July 23, 2003 6:20 PM
Subject: Re: REFLECTOR:Low fuel light
=20
I was think about that also. However, if you are on the low side of =
fuel and then make a turn, the fuel on the inboard stake would rush to =
the end. Would that not introduce air into the sump tank that you would =
have no way of relieving because you have the vent blocked off?
Bob
I plan to install a manual vent shut-off valve between the sump tank =
and the vent manifold. The result will be that the vent system can =
allow the main strake tanks to drain, but can't introduce air into the =
sump tank. I have a theory that the vent line to the sump tank causes =
more problems than it solves, once the initial "burp" of air is allowed =
to escape from the sump tank (before engine start).
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<DIV><FONT face=3DArial size=3D2>Bob,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Personally, I try to fly coordinated =
turns, so the=20
strake drains to the sump tank stay covered with fuel. However, if =
a=20
little air were introduced to the sump tank it would not interfere with =
the=20
operation of the fuel system - you would just have a bubble in the sump=20
tank. If the bubble were large, it might make its way back into =
one of the=20
strake tanks, but that's of little concern, as long as the volume of air =
remains=20
only a percentage of the volume of the sump tank. The next time =
you fill=20
the tanks, just exercise the sump vent valve to allow any trapped air to =
escape.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Keith</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dbkuc1@tampabay.rr.com =
href=3D"mailto:bkuc1@tampabay.rr.com">Bob Kuc</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dreflector@tvbf.org=20
href=3D"mailto:reflector@tvbf.org">reflector@tvbf.org</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, July 23, 2003 =
6:20=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: REFLECTOR:Low fuel =
light</DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2> </FONT>=20
<DIV><FONT face=3DArial size=3D2>I was think about that also. =
However, if=20
you are on the low side of fuel and then make a turn, the fuel =
on the=20
inboard stake would rush to the end. Would that not introduce =
air into=20
the sump tank that you would have no way of relieving because you have =
the=20
vent blocked off?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Bob</FONT></DIV></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=3DArial size=3D2>I plan to install a manual vent =
shut-off valve=20
between the sump tank and the vent manifold. The result will =
be that=20
the vent system can allow the main strake tanks to drain, but can't=20
introduce air into the sump tank. I have a theory that the =
vent line=20
to the sump tank causes more problems than it solves, once the =
initial=20
"burp" of air is allowed to escape from the sump tank (before engine =
start).</FONT></DIV>
<DIV><FONT face=3D"Trebuchet MS" color=3D#663333 size=3D3><SPAN=20
style=3D"FONT-SIZE: 12pt; COLOR: #663333; FONT-FAMILY: 'Trebuchet =
MS'"></SPAN></FONT> </DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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