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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 11-15-09, 09:58 PM   #1
chucky
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estimating rolling resistance...

...in the real world using real world power meter measurements:
http://anonymous.coward.free.fr/watt...direct-cda.pdf

Better than the traditional tire-on-drum methods and folds in aerodynamic drag too (which is probably what we want anyway). Not my work, but I was impressed and thought some of you guys would be too.
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Old 11-16-09, 10:13 AM   #2
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Quote:
Originally Posted by chucky View Post
...in the real world using real world power meter measurements:
http://anonymous.coward.free.fr/watt...direct-cda.pdf

Better than the traditional tire-on-drum methods and folds in aerodynamic drag too (which is probably what we want anyway). Not my work, but I was impressed and thought some of you guys would be too.
Thanks for sharing. Bicycle Quarterly has done some work which raises doubts about the appropriateness of tire-on-drum methods. Long story short, it appears that suspension losses are significant and that tire-on-drum tests don't account for them creating a bias.
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