Anachronism wrote:
Tom A. wrote:
lanierb wrote:
Hey Tom- quick question: which of these surface types does your "smooth to rough factor" correspond to? Is it something like "brand new asphalt"?
More like "New asphalt -aged"...brand new asphalt is apparently somewhat soft. It hardens a bit over time.
That said, remember that the blue "roller" and "on road" lines from my testing were from different tires (Vittoria Corsa KS) and a different rider/bike setup than the other lines...so things might not be directly comparable.
This is great information.
Does the breakpoint pressure increase with a heavier rider?
I don't know for certain (i.e. haven't tested it), but an inspection of various models relating to the effect imply that it
could increase with increased mass. No idea on the size of the effect though.
With increased rider mass, you'd probably be more concerned about the pressure on the other end though (i.e. going too low), where you'd start bottoming the tire and suffering pinch flats.
http://bikeblather.blogspot.com/