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In a Velocity or Cozy built to plans, there is no fuel selector or check valve between tanks and the sump.
If there is fuel in the main tanks, the sump is always full. Fuel returning to the sump will displace fuel into the main tanks.. the tank should NEVER pressurize.
Bob White wrote:
Hi Ed,
Where does the fuel go after the header tank fills up?
Bob W.
On Mon, 5 Oct 2009 21:03:39 -0400
"Ed Anderson" <eanderson@carolina.rr.com> wrote:
Hi Steve,
Just for comparison -my fuel system is very similar in concept. The
principal conceptual difference is I have a header tank for return of my
fuel from injectors mounted on the fire wall and is ˝ pint in capacity. The
theory is not much fuel to have to get rid of if it gets hot. The fuel flow
into the engine through the injectors continuously pulls cool fuel from wing
tanks.
8 gallons of hot fuel (if it ever got hot) might take a while to burn down
to the point the cool incoming fuel does some good.
This size goes counter to “tradition” on size of header tanks but is more
in line with the “returnless” systems on most of today’s automobiles.
FWIW
Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
<http://www.andersonee.com> http://www.andersonee.com
<http://www.dmack.net/mazda/index.html>
http://www.dmack.net/mazda/index.html
http://www.flyrotary.com/
<http://members.cox.net/rogersda/rotary/configs.htm>
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.rotaryaviation.com/Rotorhead%20Truth.htm
<http://www.dmack.net/mazda/index.html> _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of stevei@carey.asn.au
Sent: Monday, October 05, 2009 7:35 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Fuel System
Hi All
We are trying to make a decision re: fuel system.
I’ve attached a PDF with design and questions etc.
Could you please pull it to pieces, make recommendations?
Steve Thomas can you comment also from the GSIIRG perspective?
Thanks Steve Izett
Perth Western Australia
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