Thread: Cycling Thread
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Old 03-18-2015, 02:57 PM   #1978
cracher
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Quote:
Originally Posted by Fuzz View Post
Curious why you'd get more rolling resistance? Maybe depends on terrain, but when I'm on my 29'er cruising around the top of Nose Hill, I find I go way faster with high pressures. I run much lower for traction in the mountains though.
http://velonews.competitor.com/2014/...istance_355085


"On rough surfaces, however, a tire at lower pressure is able to absorb more of the bumps than a tire at higher pressure, with less deflection of the bike and its rider. This is the same “sprung vs. un-sprung weight” argument that demonstrates why suspension makes a bicycle faster on rough terrain — it takes less energy to keep the bike rolling if only a small amount of weight is lifted (like a small section of the tire) than if the entire bike and rider is lifted by the bump."
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