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motorcycle Aerodynamics.
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<blockquote data-quote="Prince Duster" data-source="post: 19386" data-attributes="member: 154"><p>Hi there. </p><p></p><p>From memory, a German magazine put an enclosed D in a wind tunnel. Apologies, can't recall the Cd or the magazine but the tear drop rear was, apparently, effective. There was much debate, I have heard and read, between Vincent development rider Ted Davies, and PCV, over the wheel mounted fairing on the enclosed front of the Knights and Princes, the former preferring GP dustbin fairing practice, the latter the system (adopted) which allowed the front light beam to reflect the steering input for tighter corners. </p><p></p><p>A much missed British journalist, who passed away a few years ago, was John Robinson of Performance Bikes. There should be something on this area in his book Motorcycle Tuning, at Amazon on <a href="http://www.amazon.co.uk/Motorcyle-Tuning-Chassis-Motorcycle/dp/075061840X" target="_blank">http://www.amazon.co.uk/Motorcyle-Tuning-Chassis-Motorcycle/dp/075061840X</a>. He was a fine rider as well as author - I recall him out-braking the new ABS equipped Yamaha FJ 1200 at the launch... on a slip pad, with the ABS turned off. Yamaha people not too impressed at that. </p><p></p><p>Also worth getting is anything on the subject by another great writer now departed, LKJ Setright, especially his BMW book, Bahnstomer.</p><p></p><p>Finally, I believe Moto Guzzi were the only major factory with a wind tunnel for many years. BMW hired it to develop the R100RS in the mid 1970s - worth the investment, as the RS was a major step forward, the down force the fairing generated acting to improve the steering with speed, rather than the normal habit of the reverse happening, due to lift. The RS is a generation ahead of the R90S at over 90 - 100mph. </p><p></p><p>Good luck.</p></blockquote><p></p>
[QUOTE="Prince Duster, post: 19386, member: 154"] Hi there. From memory, a German magazine put an enclosed D in a wind tunnel. Apologies, can't recall the Cd or the magazine but the tear drop rear was, apparently, effective. There was much debate, I have heard and read, between Vincent development rider Ted Davies, and PCV, over the wheel mounted fairing on the enclosed front of the Knights and Princes, the former preferring GP dustbin fairing practice, the latter the system (adopted) which allowed the front light beam to reflect the steering input for tighter corners. A much missed British journalist, who passed away a few years ago, was John Robinson of Performance Bikes. There should be something on this area in his book Motorcycle Tuning, at Amazon on [url]http://www.amazon.co.uk/Motorcyle-Tuning-Chassis-Motorcycle/dp/075061840X[/url]. He was a fine rider as well as author - I recall him out-braking the new ABS equipped Yamaha FJ 1200 at the launch... on a slip pad, with the ABS turned off. Yamaha people not too impressed at that. Also worth getting is anything on the subject by another great writer now departed, LKJ Setright, especially his BMW book, Bahnstomer. Finally, I believe Moto Guzzi were the only major factory with a wind tunnel for many years. BMW hired it to develop the R100RS in the mid 1970s - worth the investment, as the RS was a major step forward, the down force the fairing generated acting to improve the steering with speed, rather than the normal habit of the reverse happening, due to lift. The RS is a generation ahead of the R90S at over 90 - 100mph. Good luck. [/QUOTE]
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