Agreed it won,t help and a syphon can still occur. One of the more heinous situations that can and does occur. Lets say you arrive and fill your fuel tank on a nice bright glorious morning and you have done this fuel line looping band aid fix.

The airplane is sitting there on its wheels and you dicide to go over and BS with the boys a bit. Well heck great conversation but it starting to get hot so ya,ll get on back to you own pit so ya can go flying.

You pull out the trusty starter, push the button and Bang! That prop is locked up solid and you may have even damged you engine (usually a bent connecting rod).

Whoa you say it was not leaking when You filled it! Yup but that cool fuel after heating up in the sun has expanded and started a syphon despite the band aid fix (fuel line loop). Now if the prop just happens to be in the right position this syphoning fuel can now flow right through one of the transfer ports and completely fill the combustion chamber with non compresable fluid (fuel). You come along and hit it with a starter, bang goes the weasel.

Operation of an inverted installation even one with the proper fuel tank center/carb jet relationship carries many additional. procedure that you will be required to learn and practice without fail to be successful.

Actually Jaka presented an excellent idea earlier in this thread with the suggestion for a sideways mounting which raises the carbs to eliminate most of these problems. However I understand that most are not going to be willing to do this especially with an ARF. So the most practical thing I highly reccommend for anyone with a tank mounted to high is to simply lower the tank. This even if it requires a little surgery.

If you are completely new get on of the old timers in your club to help you with this most are most willing to help for only just the asking.

John