There is certainly more than one way to
design a reliable fuel system – each with its pros and cons. I too did
not want a six way value for switching fuel between two tanks and the engine
with the ugh return line. Besides I had already constructed my fuel system
pretty much according to Van’s instructions. So to preclude a return
line I came up with my “almost returnless” system. It uses a ½ pint
capacity small header tank to return the injector fuel – the fuel
injected to the engine comes from this header tank thereby creating a “vacuum”
in the tank which pulls fresh fuel from the wing tanks. It has worked fine for
over 10 years.
Both fuel pumps draw from this header tank
and either tank can feed it and I have no return lines going back to the tanks.
But, Tracy’s
approach has shown to work just fine – not knocking it by any means.
Ed
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Bktrub@aol.com
Sent: Friday, March 12, 2010 11:43
PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: fuel
supply problem?
I just copied Tracy's setup- all fuel is pumped from the
right tank, and fuel is transferred from the left into the right by a Facet
pump. I didn't want to get into having a six port fuel valve in order to get
the fuel injection to return to the tank I was using at the time.
It's really simple, and hopefully that
means reliable. We'll have to see, as this plane is looking for it's
airworthiness inspection in the next few months.
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 3267 (20080714) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com