|flat and lenticular disc wheels||hayaku|
Jun 16, 2003 8:04 PM
|what are the pros and cons of each? I remember it was big news when Lance rode a flat disc in the first ITT of last year's tour, why?|
|... generally speaking...||Akirasho|
Jun 16, 2003 10:18 PM
|The lenticular design creates a smoother laminar airflow over the disc surface and is considered slightly more aerodynamic... with a bit of a weight penalty (depending on design)... flat discs gain the weight advantage.
This may become less of a point than the surface of the disc itself with the advent of ZIPPs new textured disc (borrowing on what makes a dimpled golf ball travel further and better than a smooth one).
I've got both types, but the old motor has a time of taking advantage of either type to be definitive...
http://www.analyticcycling.com/WheelsConcept_Disc.html#Coefficeints of Wheel Drag
Be the bike.
|aero disc wheels||Time Trial dot org|
Jun 17, 2003 9:02 AM
|according to Dave Bunce of Bicycle Sports, the testing he and John Cobb did on the Texas AM wind tunnel reflected negligeable differences in aerodynamics for flat or lenticular discs.
The Zipp was very aero as was the Corima, HED lenticular and Mavic