REFLECTOR:Low fuel light

Wed, 23 Jul 2003 18:34:51 -0400

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Rene'
I can not say much about the low fuel light except that I have not 
had that on my XL-RG and I am not extending the vent. Mine is as you 
described in the plumbing except the vent line under the belly is cut 
off almost flush with the fuselage. I have tested my sump warning 
light durin the test flight period by getting pretty low on fuel and 
then pushing the nose over and maintain a dive for enough time for 
the sump light to start to flicker The low pressure warning from the 
VM1000 is a common indication. I have spoken with Vision micro about 
it and the good news is the VM1000 is working fine and the bad news 
is the lack of pressure is real. it is the way the lycoming pump 
works and if you have an analog system with low sensitivity you never 
see it. They have sent me a snubber to install in the sensor line 
which will in theory reduce thesensitivity. ther is a similar snubber 
device in the manifold pressure system. I will let you know when I 
get some free time to install it.
Jack
N55XL
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<div><font face="Trebuchet MS" color="#663333">Rene'</font></div>
<div><font face="Trebuchet MS" color="#663333">I can not say much
about the low fuel light except that I have not had that on my XL-RG
and I am not extending the vent. Mine is as you described in the
plumbing except the vent line under the belly is cut off almost flush
with the fuselage. I have tested my sump warning light durin the test
flight period by getting pretty low on fuel and then pushing the nose
over and maintain a dive for enough time for the sump light to start
to flicker The low pressure warning from the VM1000 is a common
indication. I have spoken with Vision micro about it and the good news
is the VM1000 is working fine and the bad news is the lack of pressure
is real. it is the way the lycoming pump works and if you have an
analog system with low sensitivity you never see it. They have sent me
a snubber to install in the sensor line which will in theory reduce
thesensitivity. ther is a similar snubber device in the manifold
pressure system. I will let you know when I get some free time to
install it.</font></div>
<div><font face="Trebuchet MS" color="#663333">Jack</font></div>
<div><font face="Trebuchet MS" color="#663333">N55XL</font></div>
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