Randy,
If I recall, most advice said to put it low (I assume to avoid making bubbles) and straight through into the second bay (I assume to allow the fuel to cool before re-entering the pickup tube).
I did mine slightly different. I did mine at the top of the tank, made a 90 degree turn forward and terminated it very close to the upper curving forward skin of the tank. All well supported of course. My theory was that it would not make bubbles if the fuel "wetted" the skin on an angle very close to the skin. Also, it would still be in the same fuel bay (not having to come back through the baffle) but not too close to the fuel pickup. The leading edge must have some serious cooling "power" if the fuel did pick up any heat from the engine/pumps.
Not flying yet so I can't say how this will work out. By the way, I also ran return lines all the way through the cabin including a dual fuel valve from Andair. I plan on using a fuel return system such as ECI.
Bevan
RV7A wiring now
