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My 235 has the fuel transfer lines going up the left side of the radio
stack. When a tank becomes dry, the bubbles are quite obvious, even
when not looking directly at the fuel line.
The pump is totally inaudible in flight.
Bob,
I concur with you completely. I have the same setup. For some reason, I don't know why, my fuel lines have always stayed clear. The plane was finished in 1992 and now has 750 hours on the tack. Pictures of my plane and panel are at: http://www.dynacomm.ws/~lorn/
I use a kitchen timer wired into my intercom to remind me to check the header tank level so as to avoid pumping fuel out the header tank vent.
http://home.attbi.com/~rbelshe/
Bob Belshe, Moraga, Ca
I fly many cross country flights. On the ground I make sure that my fingers can touch gas in the header tank. At 25 and 55 minutes after the hour I run my pumps for 4 to 7 minutes depending on how much fuel I am burning based on burn rate and center fuel tank indicator. I set the 4 to 7 minutes into the VM800's countdown timer. The VM800 beeps in my headset when it is time to shut off the tanks. I used to time the 25 minutes between the pump times but found that just running every 1/2 hour worked better for me.
When both of my sight gauges are dry, it is time to land or at least be thinking about it. Now that I have had time to verify(every flight) that the VM800's fuel burn gauges work, I also pay close attention to them.
The above techniques have allowed me to make flights of over 1,000 nm's with 43 gal tanks and at least 30 minutes of fuel left when landing.
--
Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp.
248-478-4301, mailto:lorn@dynacomm.ws
LNC2, O-320-D1F, N31161, Y47, SE Michigan
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