On 01/02/2014 05:20 PM, Michael Hechmer wrote:
For me, climbing is the real difference. There may or may not be a
"significant" (whatever that may be) difference in accelerating a 23mm
tire vs a well made 38 (e.g pari moto) and there certainly is not a
difference at cruising speeds; but on a long climb where every turn of
the pedal is a form of acceleration, it is hard to believe that a 270
gram tire isn't going to feel better than a 540 gram tire.
Really? If you are maintaining a constant speed (i.e., velocity) then
the rate of change of the velocity (which is the definition of
accelleration) must be zero, right? I don't see any measure of slope in
the equation or the definition.
I think the real questions here are: can you actually feel a 1 lb
difference, and does a 1 lb difference in weight make a measurable
difference in climbing performance. A rough way to test this would be
to do the ride with, and without, a full water bottle. Now this may be
just that I make a poor princess, not being able to notice the pea and
all, but I've never felt the bike to ride any different when I have full
vs empty water bottles, and that's considerably more than a 1 lb weight
difference; and I suspect that there's enough natural variation in my
power level that adding or removing 1 lb would be unnoticeable among the
random fluctuation.
But then, perhaps my proprioception isn't any better than my
pea-detecting skills, and other more refined, better-bred and highly
tuned observers might notice things that I do not...
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