----- Original Message -----
Sent: Tuesday, May 31, 2005 4:38
AM
Subject: [FlyRotary] Re: will EFI pumps
pump air
I'm planning something similar for my
RV8. Left or right fuel pump is selected by change over switch so both
can't be on at the same time and when the left pump is switched on the
normally open solenoid for the right side is activated blocking
the right return off and conversely the left solenoid is activated
when the right fuel pump is switched on.
Perhaps some sought of change over solenoid can
be used for the return instead of the 2 solenoids. Attached is a plan
of the basic layout. Using this layout, I hope to avoid
the complex plumbing for the Andair fuel selector and I may be able to
place the pumps in the wing root area.
Greg
I have separate tanks, pumps and filters on each side. Return
is switched by a solenoid energized by switching the left pump on. This
leads to its own set of fuel management issues, but it keeps the total
redundancy I was looking for. Since we're analyzing fuel systems, I'd
welcome any comments.
Where
does the fuel return go when both pumps are on? Left tank I'm
guessing? Also guessing you turn that left pump off ASAP when
climbing out with full tanks :-)
John (EM2 up and running. Checking EC2 wiring over &
over)
Great
to year you're running again!
Rusty
(weighing VW parts)
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