Yeah I agree with bonesbrigade, it looks almost too good to be true. I think we are seeing a lot of evidence lately that the stuff that hits the wind first is what really counts, so what makes a superbike "super" is a lot to do with the aero bars, integrated stem, forks etc.

I look at that link and think - surely most of it is bringing the riders' arms in more narrow? I wonder if you couldn't achieve some of that with the bars you already have, by simply flexing at the wrist and bringing your elbows in. Might not be very comfortable though, and maybe that is what you get when you pay for those aero bars. But then the difference between the bottom two is probably the most interesting bit, if all of that drag difference is attributable to round vs aero profile tops.

Agree massively.

The results above suggest that switching form my current set up to a 42cm aero profiled bar will save me ~100W at 30mph.
Now obviously I don't ride at those speeds often when I'm in the wind, basically never except on a descent. But even 20W at regular riding speeds is significant, enough that I would hope to be able to spot from a series of Garmin files which bar was used in each ride.

Continuously monitoring the results, and stopping the experiment when one has collected just enough data as to reach statistical significance would be treated as scientific misconduct.

Oops, sorry. I feel silly. :{

Thanks to wsrobert for pointing out my confusion.

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AndyF
bike geek

You're cherry picking my statement, and implying monitoring and bias. Note the reference to Pope's book and methods.

Though I'd rather not sidetrack on this, I suspect you mean to imply a misconduct by which one stops gathering results when they get the conclusion they want, which would be difficult to do if many runs are required to achieve a reasonable confidence of the true mean while not omitting data or introducing more direct forms of skewing results.

Hi Jim

Can't seem to PM you for some reason.

Can you please email me at

Joshua@culpritbicycles.com

about wind tunnel testing with me on the new Legend after Kona. Oct 15-16.

Thanks

Joshua

This is why I love Economics. So many variables. Awesome stuff.

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The curious task of economics is to demonstrate to men how little they really know about what they imagine they can design.