Further to all the discussion on parallel v series, I put fuel in my
aircraft for the first time today and found an interesting "effect" that I
had not expected.
I have a 914 plumbed the latest series way (Nov 2004 issue 8).
With only pump 1 running the fuel flows through "filter 1" which is fairly
obviously the only way from the diagram. With pump 2 running, it pulls the
fuel through "filter 2" in preference to pulling it through filter 1 and
pump 1. However, with both pumps running all the flow is through filter
one. I had sort of expected pump 2 to still draw through filter 2 but this
is not the case. It would seem that filter 2 will only be used if pump 1
and/or filter 1 fail in some way. Has everyone else found the same or is
anyone getting a different flow pattern with the series setup?
Simon
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