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Old 11-05-2007, 11:14 PM   #1
Metzzen1
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any aerodynamics data on current GP bikes?

im interested to know the Cd and other aerodynamics numbers for the current gp bikes. frontal area, coefiicient of drag, all that good stuff.

Alot of talk about ducati's "advantage" based on their better aero dynamics....
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Old 11-05-2007, 11:18 PM   #2
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Old 11-06-2007, 08:45 AM   #3
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I do the whole street thing; so when it comes down to the nickle and dime stuff, ya its really cool but so long as the top makers all come within a short distance of eachother in race completion, I see the technology adequate enough for my interests...

Ducati use to have a link to a smoke test in wind tunnel on their dealer site but there wasn't any information with it...
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Old 11-06-2007, 08:49 AM   #4
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Well whatever advantage they might have had at the beginning of the season, was only minimal at the end. But if you watched the first race in Qatar, that was all motor!
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Old 11-06-2007, 12:02 PM   #5
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well darn, was hoin for some numbers here. thanks anyway fellas
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Old 11-06-2007, 12:07 PM   #6
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Old 11-06-2007, 12:19 PM   #7
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Quote:
Originally Posted by hornet View Post
man bikes are so small aerodynamics is a moot point for discussion......
unless youre like #1 on the planet, or trying to go....hmmm mach 50...dont worry about it..
until you take into account that most bikes have a Cd (coefficient of drag)the same size as a semi truck.


you won't find any hard numbers on aerodynamics of the motogp bikes, that info is HIGHLY classified. info like that won't be released by the manufacturers for years, if ever.
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Old 11-06-2007, 01:15 PM   #8
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you won't find any hard numbers on aerodynamics of the motogp bikes, that info is HIGHLY classified. info like that won't be released by the manufacturers for years, if ever.
I was just about to say that...these secrets are very guarded ones indeed.
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Old 11-06-2007, 01:20 PM   #9
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until you take into account that most bikes have a Cd (coefficient of drag)the same size as a semi truck.
coefficient of drag takes into effect the frontal area, but a semi has more total drag than a motorcycle
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Old 11-06-2007, 01:27 PM   #10
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and then you also have parasite drag, induced drag, and form drag. a motorcycle has 2 wheels on the ground, a semi has 18, that is a huge difference in drag as well. hence the reason the hayabusa gets 49 miles per gallon and a pickup gets 12 - 20 mpg
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Old 11-06-2007, 04:30 PM   #11
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coefficient of drag takes into effect the frontal area, but a semi has more total drag than a motorcycle

The air around a motorcyclists legs and behind his back is very "dirty" - that's why they have a drag CD worse than a Hummer.

The Busa, with a rider in tucked postion, is the most aero of stock motorcycles - mainly due to the large hump behind the rider.

But even being the most aero its still poor compared to most cars.
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Old 11-06-2007, 05:04 PM   #12
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Quote:
Originally Posted by FJRmgm View Post
coefficient of drag takes into effect the frontal area, but a semi has more total drag than a motorcycle

The air around a motorcyclists legs and behind his back is very "dirty" - that's why they have a drag CD worse than a Hummer.

The Busa, with a rider in tucked postion, is the most aero of stock motorcycles - mainly due to the large hump behind the rider.

But even being the most aero its still poor compared to most cars.
nice response
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Old 11-06-2007, 05:09 PM   #13
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