On testing my new plane before flight I have a problem with the fuel pick up when the plane is at a climbing angle. I am presently using solid brass pipes inside the tank - the air one is bang in the middle right at the top, the fuel pickup tube is also bang in the middle but right at the bottom. It works at all angles except climbing for some reason. I suspect the fuel level must be away from the fuel pipe at some point.

I have also tried using the usual flex tube with clunk approach. The trouble is the tank is so small (dubro 2oz) that it doesn't have room inside to move everywhere - crap design!!! With this I can climb ok, but not dive on throttle.

What do you think? Is there a better tank design than Dubro 2oz, that actually works at ALL angles? What is clearly required is a spherical tank with a centrepoint pickup, enabling the clunk to move 360 without obstacles. I may have to fabricate one as these muppets have no idea.