RE: 3 line tanks - 3rd line bend tubing or use tubing with clunk?
Our very own Erick Royer had a great idea. What he does is place the 3rd line so it is just flush with the back of the tank stopper. This way he just puts the plane on its nose at the end of the day for the defueling. Since you only do a full drain at the end of the day this is fairly easy and foolproof. Now he said that would be better than my tubing bend to the bottom since he can get all the fuel out.
However now as I'm typing this & thinking about it the stopper protrudes far enough into the tank that you actually wouldn't get all the fuel. When the plane is on its nose the and the fuel drains the stopper will be protruding higher in the tank than the inside front thus it cannot pick up all the fuel...hey Erick read this! I think I found a flaw in your system? [sm=confused.gif]