Negative Drag claim by ZIPP, is it TRUE?
#26
Peloton Shelter Dog
Like that's ever gonna happen. You're way too busy here telling us what a bunch of cheating, wasteful, slothful, useless bunch of American Suckers we all are.
#27
Senior Member
As you well know that's a red herring. Since Zipp never wrote any articles with the intent of submitting them to a journal, the articles were never written in the style for such publication. That in no way implies that the same data could not be presented in such a way as to be acceptable for publication.
#28
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2. I have offered to explain why this data is flawed, but no one has taken me up on this offer.
3. It's very clear to me you don't know how the data was generated, or even how to interpret it, and you are definitely incapable in critical analysis, you just parrot whatever Zipp's marketers place in ads.
4. This is no different marketing than using pseudo-science to sell hair shampoo. The target customer is one who really believes that spending more on a bike beyond a certain point will make you faster.
5. Still no correlation between Zipp wheels and success over any other aero wheel brand, as is true for tires, frames, groupsets, etc. etc. It's really not about the bike.
None of Zipp wheel data is done with a rider on the bike.
#29
Peloton Shelter Dog
#30
Senior Member
False. Several independent test such as at biketechreview have confirmed Zipp results.
I didn't realize you needed my permission to post here.
Since to the best of my knowledge I have never posted about Zipp's methadology, how would you know what my understanding of it is? Are you a mind reader? My being a reviewer for several technical journals would seem to disprove your hypothesis regarding my critical abilities.
There is really no controversy about this. Every responsible person agrees that every gram saved in weight or drag makes one go faster. There can be discussion about the precise advantage gained; and of course everyone must decide for themself whether the monetary investment is worth the benefit. But does equipment affect performance? Absolutely.
I've never seen data trying to make such a correlation (and we all know correlation and causation are two different things). Absence of data is not the same as data of absence.
Because it doesn't matter.
Because it doesn't matter.
#31
Peloton Shelter Dog
Have I posted
Zipps RULE
in the past twenty minutes?
Zipps RULE
in the past twenty minutes?
#32
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Data schmata. I ride a gazillion miles, much of it hammering with fast guys. I use the **** that works, I stand by the **** that works. This DocRay Sounds Good on Paper bull**** is exactly that: bull****. Ride your bike pinhead. And if you did, you might have a clue.
Like that's ever gonna happen. You're way too busy here telling us what a bunch of cheating, wasteful, slothful, useless bunch of American Suckers we all are.
Like that's ever gonna happen. You're way too busy here telling us what a bunch of cheating, wasteful, slothful, useless bunch of American Suckers we all are.
1. They are excellent wheels, with good hubs.
2. They look cool.
Are aero wheels faster than non-aero? Yes. For real.
Are Zipp aeros better than any other aeros due to aerodynamics? Never been proven.
#33
Peloton Shelter Dog
Now you're talking my language Doc.
#34
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#35
Senior Member
I didn't write the rider doesn't affect the data. I wrote it doesn't matter. Surely you understand the difference. Go back and apply that thinking thing you mentioned several posts ago. Think about what this data is being used for and how it is applied. Think about signal to noise ratio and it's importance. Think about qualitative vs. quantitative evaluations.
#36
Je pose, donc je suis.
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Originally Posted by DocRay
Asgelle is misusing terms like a sophomore engineering student, and now is telling us that we can gain energy from wind as we pass through it, like a windmill. And, engineering can do anything, including break the laws of thermodynamics.
Originally Posted by DocRay
OK, but if you actually read those references, they all indicate that this is an application to a perfect sphere through air, and none of those principles can apply to a wheel.
Originally Posted by DocRay
Zipp's marketers imply that you are getting more energy out than you are putting in.
Sorry, but reality has to hit at some point.
Sorry, but reality has to hit at some point.
Originally Posted by DocRay
3. Dimples have been tried in other applications: they don't work, they never have.
Originally Posted by DocRay
Negative drag is just more BS.
Originally Posted by DocRay
The dimples in that application , and for golf balls is used to generate lift, and this comes at the cost of increased drag. Except at Zipp, where the opposite happens.
It's seems you've tried already, and failed miserably. But I'd love to hear your latest explanation. Pretty please?
#37
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I didn't write the rider doesn't affect the data. I wrote it doesn't matter. Surely you understand the difference. Go back and apply that thinking thing you mentioned several posts ago. Think about what this data is being used for and how it is applied. Think about signal to noise ratio and it's importance. Think about qualitative vs. quantitative evaluations.