Comment

Comment by Travis Corbin on February 22, 2012 at 9:58am

Looks great buddy!

Comment by Joe Harrington on February 20, 2012 at 10:11pm

Jeez Lawrence, a guy goes away for a couple days and .... Looks great! 'Making me rethink my design..

Comment by Jesse Hartman on February 19, 2012 at 4:59pm

Andre.  That is a good article.  Lots of good info.

Comment by Lawrence Van Egmond on February 19, 2012 at 4:25pm

Andre, after looking at the article it would seem that a return line to the header tank should work fine as long as it is vented back to the main tank as well.

Comment by Lawrence Van Egmond on February 19, 2012 at 4:18pm

The tank holds 2.5 gallons and is vented up to the right wing tank. I am not sure how this installation would work with a fuel injected engine. It would probably be better to run the return line to the main tank.

Comment by Andre Levesque on February 19, 2012 at 3:13pm

Here is some info that might help, not sure but just in case.

http://www.sdsefi.com/air27.htm

Comment by Mark Maltais on February 19, 2012 at 3:10pm

That's the one thing I'm wondering about header tanks as well.  If the return line is plumbed to the header tank, how much pressure does it need to offset the fuel being gravity fed from the mains to the header?

Comment by Andre Levesque on February 19, 2012 at 2:56pm

Lawrence,

How many gallons of fuel in your header tank?

you have a good point, running both wing tanks empty leaves you with a 1/2 hrs reserve. that's a great backup no doubt.

Comment by Lawrence Van Egmond on February 19, 2012 at 2:39pm

I chose to put in a header tank so I would not have to worry about fuel starvation in a long decent with low fuel levels in the wing tanks. I am running aluminum fuel lines down the V tubes of the cabin frame with shut offs at the wings and header tank. This will make for a very simple gravity feed system. Because I am using a 912 ULS  the weight of the tank on the firewall should not cause any weight and balance issues and may even allow me to carry more luggage as the 912 is quite light. As for fuel in the cabin, everything is a compromise but I believe the header tank is in one of the safest location in the cabin. With the tank I will be able to use all the fuel in the wing tanks and still have a 1/2 hour reserve.

Comment by Jesse Hartman on February 19, 2012 at 2:36pm

From my experience with race cars and motorcycles with a return line plumbed in, they are recommended to be plumbed in so the fuel goes in the top of the tank.  If the return line goes into the header tank will the fuel be abel to push back the weight of the fuel in the tanks?

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