- Sep 16, 2003
So why can't they improve the airflow off the trailing edge of the front wheel with a narrower rim that can use a 23c tire that would fit that airflow concept that takes place with a rim that fits a 25c?
How about this:
Spokes mess up aerodynamics.
If you're hunting aero advantages, one of the first things is to reduce spoke count.
However, there's a dependency between the number of spokes you're using and the strength/stiffness - both lateral and vertical - that's required from the rim to make it into a functional wheel.
Strength/stiffness can come both from shape and from amount of material used.
Maybe the aero advantage of a narrower rim is offset by having to build the rim heavier to achieve the required stiffness?
Or a production issue with actually making that narrow, tapered cavities with good laminate saturation and compaction?