Pickup tube location

Ron, this is a very good question. In fact it's not an easy one to answer. I explained this to Rolla recently and I'm providing him with a tutorial of my experiences with tanks of the how and why. I can very well try my hand at posting some of my findings. The best way to describe what's happening is to swing a bucket of water around and what happens to the water. It goes up the side wall and stays to the outside obviously. I for one would certainly like to experiment a little more with this as I've had some engines just defy everything that I already know. I for one would always try to fix the pickup to the rear and when I've taken some of these engines apart, I found the pickup not in the rear where I originally had it placed and these have been my best runners.

I truly believe what happens here is that as we start getting more involved with our flying and pushing the envelope a bit further the more we start finding faults with our engine runs due to this. Flying level and an occasional wingover doesn't really demand much in terms of a fuel tank until we start doing outsides, inversion, and just all around stunt flying. It then becomes apparent that we can't have the engine quit when we need it most. I certainly would try and raise your pickup a bit higher. This may give you more run time inverted and also less troublesome runs when doing outside maneuvers. It's just that somewhere through the course of the engine run it is going to lean the engine due to the pickup not being totally submersed in fuel. Ken