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Marv wonders:

<< Other than the extensive distance from the
 outboard end of the tanks back to the fuselage, what problems do any of you
 see with this venting scheme? >>

I don't think it is a good idea to have the vent higher than the cap. This
implies that you can have some pressure behind the cap. There are two problems
with this, caps leak and a preflight check of fuel level (removing the cap)
will result in fuel being spit at you. Personally I would rather have the blue
ring around the vent;)

The IVs have a little NACA scoop that pressurizes the fuel to about 1/2 a PSI
at cruse. This no doubt helps prevent boost pump cavitation in high altitude
flight.


Regards
Brent