Quote Originally Posted by wildirishtime View Post
Yea it's not our flying or our plumbing, it's all new and all tests conducted in smooth air - and i'm not talking about just a gallon difference, it's usually 3-4 gal different every long haul flight.

Separate valves are a patch, not a solution - it sure seems that for 3 hour flights with level wings they should consume almost exactly the same rate.

Does anyone else have this problem? Or is this within the realm of 'normal' for model 5/6/7 Kitfox for long cruise flights?

Not sure why you call this a patch- it works well.

If you have all equal in a your fuel system you might be Ok or maybe not.
-gas caps both sealed the same?
-fuel lines the same length and same amout of bends and all bends the same radius?
-is fuel flow exactly the same from each tank the T connector in fuel system?
-is your fuel tank vents equal and calibrated?
- is fuel cap vents the same?
- is everything calibarted equally thought out fuel system?

Separate valves are simple and easy and not necessarily a "patch".

Cessna has the same issues as well. This is not isolated to Kitfox.
You just got to learn to manage your fuel better.

I like to know that I fuel in each tank and when one is low I will switch over.

If you lose a gas cap in flight or have a bad gasket on gas cap you could actually be flying on "BOTH" and have both drain while you fly.