----- 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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