The holy grail is a returnless system, to finish out the automotive style injection. :-)

Ed did use a very small header tank; logic was that the recirculated fuel never stayed in the tank long enough to begin to heat up. But he didn't vent the header back to either main tank. I always thought that the unvented header was going to be the cause of his next 'glider' flight. If you add a vent line back to the main tank, it'll work safely. (My BD4 had a similar system, but for a different purpose; the BD main tanks had a tendency to unport in uncoordinated flight.)

There are other options, too. We can talk.

On Mon, Jan 20, 2020 at 7:58 AM Bobby J. Hughes bhughes@qnsi.net <flyrotary@lancaironline.net> wrote:

What is the best method for handling return fuel in a high wing? Fuel return to a small header tank sized to keep fuel temperatures low? I think Ed Anderson may have used a small header in his RV6.

 

Asking for a friend with an airplane addiction.

 

Bobby

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