Raced an ‘03-04 Yamaha YZF-R1 Super Bike…
08-29-2006, 05:59 PM
#286
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Originally Posted by Larry928GTS
I think that helps put it in perspective pretty well. In the above example, the bike does 0-60 in the low 2's, and then takes 8 seconds to do the rest of the 1/4 mile. The supercharged 928 does 0-60 in the high 3's, and then also takes 8 seconds to finish the 1/4 mile. Start them both at 60mph, and go up to the speeds mentioned, and it seems pretty logical that the car pulls away the faster and further they go, up until the top speed of one or the other becomes a factor.
08-29-2006, 06:38 PM
#287
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Perhaps the coefficient of drag as listed in this article...Description Low Medium High
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Experimental 0.17 0.21 0.23
Sports 0.27 0.31 0.38
Performance 0.32 0.34 0.38
60's Muscle 0.38 0.44 0.50
Sedan 0.34 0.39 0.50
Motorcycle 0.50 0.90 1.00
Truck 0.60 0.90 1.00
Tractor-Trailer 0.60 0.77 1.20 " Note that motorcycles have horrible numbers just have small frontal areas yet the effect has a big impact on horsepower drain at high speeds. Power spent fighting the wind is NOT accelerating the bike.
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Experimental 0.17 0.21 0.23
Sports 0.27 0.31 0.38
Performance 0.32 0.34 0.38
60's Muscle 0.38 0.44 0.50
Sedan 0.34 0.39 0.50
Motorcycle 0.50 0.90 1.00
Truck 0.60 0.90 1.00
Tractor-Trailer 0.60 0.77 1.20 " Note that motorcycles have horrible numbers just have small frontal areas yet the effect has a big impact on horsepower drain at high speeds. Power spent fighting the wind is NOT accelerating the bike.
08-29-2006, 06:54 PM
#288
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Originally Posted by jyoon
i don't think this is logical. what is logical is at the end of the 1/4 mile, the bike's trap speed is gonna be way higher than the cars trap speed and pulling away.
Both lift and drag increase with the square of the wind speed.
The reason why drag is much more of a problem for a racing bicyclist than for, say, a runner, is that a fast runner will be moving at speed of some 6 m/s (21 km/h, 13 mph), whereas a racing bicyclist is moving at a speed of some 12 m/s (42 km/h, 26 mph).
A modern car (drag coefficient 0.34) with a 110 kW (150 HP) engine will be using about 4.6 kW (6 HP) of power to overcome air drag and 11 kW (14 HP) for mechanical propulsion (rolling resistance etc.) when it is being driven at a constant 80 km/h (22.2 m/s, 49 mph). When driving at its top speed of 210 km/h (58 m/s, 128 mph) it will be using 82 kW (112 HP) to overcome drag and the remaining 28 kW (38 HP) to overcome rolling resistance etc.
The reason why drag is much more of a problem for a racing bicyclist than for, say, a runner, is that a fast runner will be moving at speed of some 6 m/s (21 km/h, 13 mph), whereas a racing bicyclist is moving at a speed of some 12 m/s (42 km/h, 26 mph).
A modern car (drag coefficient 0.34) with a 110 kW (150 HP) engine will be using about 4.6 kW (6 HP) of power to overcome air drag and 11 kW (14 HP) for mechanical propulsion (rolling resistance etc.) when it is being driven at a constant 80 km/h (22.2 m/s, 49 mph). When driving at its top speed of 210 km/h (58 m/s, 128 mph) it will be using 82 kW (112 HP) to overcome drag and the remaining 28 kW (38 HP) to overcome rolling resistance etc.
08-29-2006, 07:23 PM
#289
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This is comical. liter bike versus a boosted 928. from a 60 punch. The Boosted shark wins. I would imagine there is enough scooter trash and dorks with videos to see this one through.
I also think the bike vs. shark stories are fully made up in the land of oz.
I like being on this board it appears a Boosted shark is king of the road. NA sharks must be a close 2nd.......
I for once would love to see vid of ANY street legal shark do ANY 11 second 1/4mile and not on a MAGICAL G-whiz-tech
I also think the bike vs. shark stories are fully made up in the land of oz.
I like being on this board it appears a Boosted shark is king of the road. NA sharks must be a close 2nd.......
I for once would love to see vid of ANY street legal shark do ANY 11 second 1/4mile and not on a MAGICAL G-whiz-tech
08-29-2006, 08:47 PM
#291
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08-29-2006, 09:03 PM
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Originally Posted by Loaded
This is comical. liter bike versus a boosted 928. from a 60 punch. The Boosted shark wins. I would imagine there is enough scooter trash and dorks with videos to see this one through.
I also think the bike vs. shark stories are fully made up in the land of oz.
I also think the bike vs. shark stories are fully made up in the land of oz.
I like being on this board it appears a Boosted shark is king of the road. NA sharks must be a close 2nd.......
I for once would love to see vid of ANY street legal shark do ANY 11 second 1/4mile and not on a MAGICAL G-whiz-tech
Originally Posted by Larry928GTS
Just how many brothers does Herr Kuhn have anyway?
Last edited by Tim Murphy; 08-30-2006 at 12:12 AM.
08-29-2006, 11:30 PM
#297
Originally Posted by Loaded
its all good... I am still thinking about murphing my 928....I am just afraid to grenade a great car
08-29-2006, 11:45 PM
#298
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Originally Posted by Loaded
its all good... I am still thinking about murphing my 928....I am just afraid to grenade a great car
08-30-2006, 09:35 AM
#299
Race Car
Originally Posted by Loaded
This is comical. liter bike versus a boosted 928. from a 60 punch. The Boosted shark wins. I would imagine there is enough scooter trash and dorks with videos to see this one through.
I also think the bike vs. shark stories are fully made up in the land of oz.
I also think the bike vs. shark stories are fully made up in the land of oz.
WTF!C'mon, you and some others are actually saying that the thread-starter and the witnesses are all liars??
And here you are calling bull**** on posted GTech results too:
I for once would love to see vid of ANY street legal shark do ANY 11 second 1/4mile and not on a MAGICAL G-whiz-tech
https://rennlist.com/forums/showpost...5&postcount=12
So, is Tony a liar too?
As someone else stated, it appears it's all about sour-grapes. Next time you get the urge, I would suggest to do a little research first, so that maybe you won't make such a big fool of yourself.
08-30-2006, 05:48 PM
#300
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Originally Posted by heinrich
LMAO Larry 
Dudes I've lived it, I've beaten great bikes .... it's the rider.
Dudes I've lived it, I've beaten great bikes .... it's the rider.