On Wed, 26 Jan 2005 09:38:14 -0500, " jls"
wrote:

C. G. Taylor, also the designer of the Cub, must have been thinking about
those steep climbs in a Taylorcraft when he designed the ram-air tubes on
the wing tanks because they are bent more than 90 degrees downward so they
face directly into the slipstream during a steep climb.

There is another possible reason for angling the ram tubes slightly
downward: it prevents rain drops from entering the vent system while
in flight, and sitting on the ground.

Corky Scott