there's some good stuff on this thread:
http://weightweenies.starbike.com/ph...er=asc&start=0
It takes about a page to "clear its throat", but then some interesting posts about aerodynamics start to pop up. The guy called Adrien, who's on the Weight Weenies forum, is the author of some of (or all of?) the aero articles on
http://www.rouesartisanales.com/ , such as this one:
http://www.rouesartisanales.com/article-4934445.html
This thread also has a few good posts:
http://www.bikeforums.net/showthread...highlight=holy
I don't know a lot about aerodynamics, but, to answer your question, both rim depth
and spoke count affect aerodynamics: a 15mm rim with 12 spokes ( i hope there's no such wheel
) would have an aero advantages over a 20mm 28-spoke wheel, as would a 100mm rim with 24 spokes. Getting aero isn't just about getting to a certain depth -- which is usually stated as being >40mm -- it's also about any increase in rim depth reducing the spoke count because the wheel is stronger, which then improves aerodynamics. In other words, some would say that 30mm isn't enough to affect any aero benefit, but it is if the 30mm makes the wheels strong enough to drop the spoke count to (for eg) 16 or 18.
eh, more later.....