RV-3: F-1 Style Fuel Tank Vents

[scsmith]

Originally Posted by FinnFlyer

No, no. Just like the newer RVs have a vent line straight down at the tank root rib, ...

Finn

And how is it that does not simply drain the tank down to the level of the fitting in the root rib? Set aside uncoordinated flight for now, just consider dihedral.

It must be that the vent line still starts at the high point of the tank at the outboard end, and runs inboard to the root, then down. Without a couple of coils, it will tend to burp more fuel