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Re: Capacitance fuel gauges

Subject: Re: Capacitance fuel gauges
From: Gramin@aol.com
Date: Sun, 11 May 1997 19:45:24
In a message dated 11/05/97  11:01:15, you write:

<< Aero Developments at Kemble offer a complete ready to install Capacitance
 fuel gauge kit >>

Come on now , how much ? for those of us near bankrupty from building.
and how's about a digital readout version ?

A transverse float gauge (with  insensitivity to pitch) can be added without
hacking holes in the tank if you are prepared to stand off the filler hose
with a fabricated section. This section carries a support for the axis of the
float gauge itself which is a wire arm at right angles to it (with a 35mm can
on the end of course).  What you do with the rotation is entirely  your
 choice , (except that you cannot rotate a vane type condenser inside, as it
doubles its capacitance when the tank entry pipe fills.)  But most wirewound
pots don't mind petrol even if unsealed.  I have tried bringing  the 1/8"
shaft out through an O-ring seal, and find friction is easily  overcome by
the "Archimedes" in the tank. Though you then have to attach the filler hose
to a side arm, we epoxy moulders know how to do that sort of thing, don't we
?

The options are then  wide.  e.g.  a combined visible and electrical gauge
 using a  light source projecting  via a mirror on the shaft, to a scale.
 The top of the fuselage would have no viewing problems !

Graham


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