-----Original Message-----
Subject: RE: Fuel tank sight gauge routing
Graham, Why do we want to put the fuel return up at the vent fitting rather
than down at the reserve side fuel outlet?
Kevin A211
-----Original Message-----
Behalf Of Graham Singleton
Subject: Re: Fuel tank sight gauge routing
>I did mine that way and have just tried to fill the tank. It blew gas out
>the single vent on top of the fuselage at about 12 gallons. The tank was
>not full(according to the visual tube by the seat). Did not try putting
any
>more gas in the tank. I am still trying to figure what the problem is. I
>have the tee connection just aft of the tank. I can't figure how gas got
up
>in the vent tube well before the tank was full. Seems to me it would be
>ideal for the vent tube to be long enough to go forward to the front top of
>the tank since the tail is lower and that is the likely last place for air
>when sitting on the ground.
>Ken Carpenter
>A123 MonoMG
Ken,
I think part of the problem is the size of the vent line, too small. I am
planning using 1/2" line up to the vent, teed in to the XS filler moulding
to allow quicker filling and syphon break, then onward through 1/4" pipe to
the breather which could be above or below the fuselage. Havn't tried it
yet but I have made the tank fitting to enable it.
(3 NPT holes for tank breather, sight gauge breather and fuel return.
Graham
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