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1. 03:04 PM - fuel sender - 701 fuel tank (H. Robert Schoenberger)
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| Subject: | fuel sender - 701 fuel tank |
--> Zenith-List message posted by: "H. Robert Schoenberger" <HRS4@prodigy.net>
List . . . I've finished modifying (per the photo manual) the fuel sender that
fits in the right 701 wing fuel tank. I made a test stand that duplicates the
height and slight angle of the top of the tank. I'm not completely satisfied
with the way the float arm goes down. When I hold it up (eg full tank) and leave
go, it goes to the bottom in one fell swope, But if I gently hold it in
about the midposition, it stays there unless I very gentlely jiggle the stand.
Have any of you had an experience like this with yours? My common sense says
the vibration of the plane will cause it to move. It doesn't take much to make
it move. Does the fuel itself provide some sort of lubricant? (I'm testing
mine dry, and it would be a major chore to test it wet with fuel.) The sender
is really sealed up when the top skin is riveted on, and I wouldn't want to
have to take it apart to fix a sticky sender.
Maybe one the electrical experts on the list can explain to me how one can pass
an electric current through the rheostat in the sender within a tank of fuel
and not have the whole thing go up. Didn't a Boeing blow up due to stray currents
in the fuel tank? Thanks for your help. Hap Schoenberger 701 tail completed,
right wing 80%.
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