The Murphy Builders Site

A couple of questions,

Do you run a fuel pump, either electric or mechanical, with the header
tank?

When the engine is off, I assume the fuel will equalize up the header
vent line to the level of the fuel in the wing tanks, unless you turn the
wing tanks off, am I thinking correctly?

When the engine is running, is the fuel in the vent line at that same
elevation as above?

Do you make a high spot in the header tank to plumb the vent tube
out of or does a flat top suffice for preventing a bubble on top? (i'm
picturing my cattle trough with a layer of ice on it when I fill it up. Air
gets trapped on the underside of the ice)

Could some photos or a drawing of the fuel system with a header
tank be posted please?

Thanks,
Paul SR074



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A couple of questions regarding a header tank.

Do you need to run a fuel pump with a header tank, (elec. or mech.)?

When the engine is off, does the fuel equalize up the header vent to
the fuel level in the wings?

Do you need to create a high spot in the header tank to place the vent
or does the movement in flight push any air bubbles to the vent on a
flat top header tank? (Think filling frozen water trough when the hose
water breaks through the ice layer)

Does any one have any photos or sketches of a fuel system they can
post?

Thanks, Paul Lennemann SR074



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