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Feedback Loop

机译:反馈回路

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摘要

In the "Milwaukee melody" letter in the July Service, you told the letter's writer, Chris Graham, that "your friend is completely wrong" in his claim that the distinctive sound of a Harley-Davidson is caused by its ignition timing. You then proceeded to imply that a Harley engine has a distinctive sound because it is a 45-degree Vee while the Ducati is a 90-degree Vee. In itself, there's really not that much difference between the two. The reason the Harley has a distinctive sound, which you did not even bring up, is because its ignition timing is 45/675 degrees, whereas the Ducati's is 270/450. The Harley, as it is timed, sounds and runs more like a Single than a Twin while the Ducati is much closer to even-firing. So, Graham's friend was not "completely wrong" at all.
机译:在7月服务的“密尔沃基旋律”信中,您告诉信的作者克里斯·格雷厄姆(Chris Graham),“您的朋友是完全错误的”,他声称哈雷戴维森的独特声音是由点火时间引起的。然后,您暗示哈雷发动机具有独特的声音,因为它是45度Vee,而杜卡迪是90度Vee。两者之间实际上并没有太大区别。哈雷具有独特的声音(您甚至没有提起)的原因是,其点火正时为45/675度,而杜卡迪则为270/450。计时的哈雷在发声和运行方面更像是单打而不是双发,而杜卡迪则更接近均匀射击。因此,格雷厄姆的朋友根本不是“完全错误”。

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    《Cycle world》 |2008年第10期|p.96|共1页
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  • 正文语种 eng
  • 中图分类 公路运输;
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