Originally Posted by
donrhummy
A new wind tunnel facility for cyclists has opened. That's cool. They claim that if Cadel Evans had put tape over the vents in his time trial helmet, he'd have finished 30 seconds faster and won the race. I'm skeptical.
Perhaps running the numbers would relieve your skepticism. A reduction in CdA of less than ~2% would save 30 seconds over the course of the Tour TT's. That type of change is easily seen by using a smooth helmet.
http://www.analyticcycling.com