Wow, I feel like this has become a "best histogram plot" contest. :-) Nice work, folks!

We have to be careful interpreting this data. Montreal's F1 track has a 4ft concrete wall around most of it. That's going to impact ground-level wind considerably.

But, yes, we have generally found that rides with more than half of the time spent over 5deg yaw are quite rare. I'm sure Kona will be the exception, rather than the rule.

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AndyF
bike geek

I was basing it off of remembering this article with Josh Poertner while he was still at Zipp. You could also be correct.


http://nyvelocity.com/...ineer-josh-poertner/

I didn't mean to jump to conclusions. Just thought the data was interesting and coincides with other data and analysis of data that I have heard.

I realize the limitations of this data, but it is still interesting to see and look at. :)

Agreed, it is very fun to not have to wonder about yaw angles anymore. We've been doing this for 4 years, now, and it's time to start showing the data off to you folks.

I think that collectively we can find the right use for this data. It's not just for manufacturers.

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AndyF
bike geek

Don't forget though that this track is sort of "shielded" by walls/fences/trees. In light of that, it's remarkable that the yaw distribution is as wide as it is.

Yeah, no doubt. I mentioned there were limitations to this data. But it is still interesting. Even on the road you are shielded by passing vehicles or buildings, trees, fences...etc.

Would be interesting to see if Andy has any data taken from out on the road.

I didn't download the data but it also looked like average speed wasn't all that high. At normal TT race speeds the yaw angles would get even lower.

No way, Cervelo actually know what they're doing?!?!?

;)

Would love to see some distributions just based on your overall data combined (riding on the road, etc)

Hey, I was going as fast as I could, ok!!! ;-)

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AndyF
bike geek

Where's the like button?! I used a car for my little project ;)

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Developing aero, fit and other fun stuff at Red is Faster