There's that, and the fact that in today's unbelievably tight credit market, you might not be able to get a loan for one. ;-) Charlie Bill Schertz wrote: > Consider using an ANDAIR duplex valve. It takes fuel from one tank and > returns it to the same tank. Turn it and it takes and returns to the > other tank. Simple in operation, but requires more plumbing. > Bill Schertz > KIS Cruiser #4045 > N343BS > ----- Original Message ----- From: "randy echtinaw" > > To: "Rotary motors in aircraft" > Sent: Tuesday, December 02, 2008 6:50 PM > Subject: [FlyRotary] Re: Fuel system > > >> Al, >> That was my first thought to just drain the smaller tank into the >> larger with a simple 1/4 turn on/off but I would have to run the >> main at least 1/2 empty for this to work. I cannot fly ackro with >> less than 6 gallons in the main tank. I cannot fly ackro at all with >> fuel in the smaller tank so by the time the smaller tank emptied I >> would have little fuel remaining in the larger tank. I even >> considered a small transfer pump to fill the larger tank but I am >> again creating complexity. >> All input here is welcome :)) >> Thanks, >> --------------------------------- >> >> On Dec 2, 2008, at 7:39 PM, Al Gietzen wrote: >> >>> Randy; >>> >>> Is the positioning of the tanks such that you could gravity feed the >>> small >>> tank into the big tank? Then you could return to the larger tank - and >>> eliminate the selector valve. >>> >>> Al G >>> >>> -----Original Message----- >>> From: Rotary motors in aircraft >>> [mailto:flyrotary@lancaironline.net] On >>> Behalf Of randy echtinaw >>> Sent: Tuesday, December 02, 2008 3:59 PM >>> To: Rotary motors in aircraft >>> Subject: [FlyRotary] Fuel system >>> >>> Gentlemen, >>> Because a large majority of homebuilt problems are fuel related I >>> am trying to make my system as simple as possible. This is a biplane >>> with a 20 gal. and a 10 gal. tank in front of the inst. panel, RX-8 >>> engine. >>> The only "known" problem I have at the moment is my fuel return. I >>> would like it to return to the main tank only. This would mean burning >>> off 2-3 gallons from the main tank before switching to the 2nd tank. >>> But, this might mean I am setting myself up for a future "pilot error" >>> in fuel management. If I return to both tanks I would need another >>> selector and cockpit control which is making the system more >>> complicated and, again, potential "pilot error." So, suggestions . . . >>> Thank you very much, >>> Randy -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html