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Cadwell Park Jump
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<blockquote data-quote="davidd" data-source="post: 53055" data-attributes="member: 1177"><p>I always assumed this was not related to power, but at least in the gravity based racing it was due to aerodynamics. Once in the air it is difficult not to double or triple the frontal area that the racer is presenting. The tuck is always the most efficient position. I would be inclined to say the same thing about racing motorbikes. The tuck is the most efficient and when you tip the bike in the air you have increased the frontal area to include the bottom of the bike as well. So, I would suspect there is an aerodynamic penalty to the jump. It could be offset by an increase in entry speed, but it seems to me that there is always someone who can figure out how to enter faster and stay closer to the ground, which should provide an advantage. To add to the aerodynamic advantage, if the rider can stay close to the ground, he can then apply the throttle and get a benefit much longer, as Roy says. </p><p></p><p>I think you would have to examine lots of lap times to find the answer, but it would be interesting to know if the track record lap time was made with the bike in the air or closer to the ground. That would give a quick clue.</p></blockquote><p></p>
[QUOTE="davidd, post: 53055, member: 1177"] I always assumed this was not related to power, but at least in the gravity based racing it was due to aerodynamics. Once in the air it is difficult not to double or triple the frontal area that the racer is presenting. The tuck is always the most efficient position. I would be inclined to say the same thing about racing motorbikes. The tuck is the most efficient and when you tip the bike in the air you have increased the frontal area to include the bottom of the bike as well. So, I would suspect there is an aerodynamic penalty to the jump. It could be offset by an increase in entry speed, but it seems to me that there is always someone who can figure out how to enter faster and stay closer to the ground, which should provide an advantage. To add to the aerodynamic advantage, if the rider can stay close to the ground, he can then apply the throttle and get a benefit much longer, as Roy says. I think you would have to examine lots of lap times to find the answer, but it would be interesting to know if the track record lap time was made with the bike in the air or closer to the ground. That would give a quick clue. [/QUOTE]
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