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Old 03-27-2020, 11:12 PM   #11 (permalink)
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Quote:
Originally Posted by Ecky View Post
Although it wasn't stated explicitly, I gather that as some point, rolling resistance improvements diminish sufficiently as to not be "worth" the additional harshness and vibration.
Exactly! On flat roads top speed is limited by wind drag. Consider that a world class sprinter pro cyclist may be able to hit 40 mph in a sprint with a good leadout for a few seconds. A fully faired cyclist can reach 80 mph at Battle Mountain using very similar tire technology.

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Originally Posted by freebeard View Post
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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Old 04-01-2020, 03:11 PM   #12 (permalink)
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Quote:
Originally Posted by Vman455 View Post
You might know the answer to this: Prevailing wisdom at Slowtwitch is that latex tubes are less resistant to puncture than butyl. Is that actually true?
I'll risk a guess that it's an anecdotal,urban legend type of thing.I have read where natural latex rubber has superior hysteresis characteristics compared to synthetics,but a puncture is a puncture.Under up to 51-psi inflation pressures now,unless a tire has an elastic,self-sealing membrane,passive 'healing' from a perforation would be hard to pull off.

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