Ooh!..I’ll take a serving of position #2 or #8 please!
ok one in watts at position at 50 km h at another windtunnel
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Spam.
Color me confused: the lines represent changes from the baseline position at various angles–but how does the baseline position do at different yaw angles? Wouldn’t it make more sense just to put up the numbers for all of the various positions in total drag? (of course, that would probably be giving out too much info…).
Secondly, what’s the prognosis for putting out full power? Are 2 and 8 positions that could be tolerated for an all-out 3:3X-3:4X effort? Personally, I find it harder to reach full power over that distance than over 40K. Obviously, faster is faster and all. I’m just wandering if 2 and 8 are ‘windtunnel’ positions that can’t be sustained?
would be even more interesting with the pictures of these 8 position…no???
I notice AC, and a lot of people here, are just complete data teases. They go and figure out the answers to all the questions people ask here, and post just enough crap to prove they really do know, without telling us anything.
Its like going to a strip club! Useless!
well…not necessarly… i just dont understand why post the graph without the positions? i dont know what it tells? but maybe some other understand and i m fine with all this… i m just asking andrew to post the pic if he can…that would make the thread freaking super interesting! or maybe just help me understand more!!!
Seriously, this post of his was to tease us
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Seriously, this post of his was to tease us
Umm…didn’t he SAY it was to “whet your appetite”?? Of course it’s a tease.
Don’t worry, I have a feeling there’s going to be plenty of stuff to digest soon enough…just don’t get too full, or you won’t want dessert 
Spam.
Huh?
hehe…I guess I wasn’t the only one to be a little slow on the “food” meaning of this joke…NOW I get it!
BTW, I kinda like “SPiced hAM”…
Which one is on Power Cranks?
Seriously, this post of his was to tease us
Umm…didn’t he SAY it was to “whet your appetite”?? Of course it’s a tease.
Don’t worry, I have a feeling there’s going to be plenty of stuff to digest soon enough…just don’t get too full, or you won’t want dessert
Yes, this is why I was telling the other guy, with certainty, that this data was just a tease. He actually built a chart to tease us!
damn strippers
=)
Then what is the point of your post?
This is the only thread that I have read about your trip, and the only thing that I have learned is that various positions and equipment choices can create/decrease your drag numbers.
I have a feeling there’s going to be plenty of stuff to digest soon enough
Sorry - no soup for you!
“George: $2.00? But everyone in front of me got free bread.” 
Then what is the point of your post?
I’m quite certain that some of the smart people here have learned something of value from my various posts about this trip.
And people give Frank Day a hard time?
Then what is the point of your post?
I’m quite certain that some of the smart people here have learned something of value from my various posts about this trip.
Well, I’m not that smart, but there are a couple of unusual things I notice: the relative standings of the different positions completely re-arrange themselves between 0 and 5 degrees. You’ve even got a couple of lines that cross each other 3 times between 0 and 10 degrees. Only one of the positions yields anything close to a monotonic increase in drag. I’m not happy about this, because it suggests 0-yaw field testing isn’t all that useful.
This is a great deal different from the graphs of wheels from Zipp and Tour mag, in which the lines tend to run parallel to each other; a few may cross once (though these tend to be ones that are very close to begin with).
– jens
yeah? how much was that trip to the tunnel? you dont get that for free??? anyway, starving athlete request pictures, i m sure you have a bit more generosity stock in you somewhere
Frank is selling something, no debating that. You are giving away confusion (at least to me)
Well, I’m not that smart, but there are a couple of unusual things I notice: the relative standings of the different positions completely re-arrange themselves between 0 and 5 degrees. You’ve even got a couple of lines that cross each other 3 times between 0 and 10 degrees. Only one of the positions yields anything close to a monotonic increase in drag. I’m not happy about this, because it suggests 0-yaw field testing isn’t all that useful.
It also suggests that wind tunnel measurements taken at a fixed, non-zero yaw don’t tell you everything either, huh? Hmm…who’s been telling us this all along??
It’s sounding more and more to me like the most useful field test method is the “Chung method” where you use a loop type course and have some wind present and your speed is varied. That way, at least you get an “average” CdA over a range of yaws instead of just a single zero yaw number.