Brit:

I just remembered that I have the Venus 40 manual with me here at work. The tank neck fits through a hole in the firewall that is in the center of the engine mount. Sort of fixed location, unmovable I guess. But, the fed line is on the top of the neck when inverted (the way I set it up). The pressure line is on the side. I use two tubes instead of the three that they recommend in the manual. I route the tube from the tank, out of the cowel, to a brass tube about, oh, 3/4 inches long, then back to tubing then back through the cowel, then to the needle valve assembly, which on the OS 50, is on the back of the engine. The brass tube setup facilitates refuel and allows access for the 'pinch' mixture test.

On the Excelleron, there is a hole in the former between the firewall and the radio compartment and a 'shelf' that the tank rests on after passing it through the former. I suppose I could move it up or down a bit, but not sure without having a look at the setup, I only have the book in .PDF format on my PC.

I will have to give it a lot of thought when I reach that stage of the build. I intend to glue in the horiz stab tonite, then the vert stab Friday, then on to the linkages, then finally to the tank. Should be interesting.

DS.