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roadman

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About roadman

  • Birthday 02/14/1941

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  • Have you attended a California Superbike School school?
    Yes, about 1986

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    Atlanta

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  1. Great review, Shane! Thanks for taking the time to compose and post it. Robert
  2. I'm not a scientist. And, I admit I do not understand all I know about bikes or gyroscopes. Yes, there is significant disagreement between scientists about precession from what I have read. My friend who is both an experienced motorcyclist and aeronautical engineer and physicist assures me it is only marginally relevant. (He also dismisses Bernoulli’s Principle as having little to do with flight.) Also, motorcyclists disagree about the relevance of precession in motorcycle steering (often vehemently). To my mind, precession provides a good description of what is happening while riding a motorcycle. That is a force operates 90 degrees in the direction of rotation. In the absence of an outside force another gyroscopic property controls the bike. That is rigidity in space. Of course, when this rigidity is lost, a gyroscope tumbles, i.e., the bike crashes. But, with regard to the difference between the experiment with a bicycle wheel and a motorcycle in operation I think the higher speed and mass would make precession more forceful in a motorcycle. It seems to me the experiment with a bicycle wheel using handle grips attached to the axle is only half the turn input. That replicates the push on the handlebar. That gets lean. The other half is the resulting diagonal force applied by the road to the contact patch - that gets the turn. The force seems to be there, however we may interpret it. Just some thoughts.
  3. Oops! Right, 14 and 14a. I'm not sure how Dave is geared.
  4. Hi! I've been following the thread about Barber You might find Dave's video from a NESBA Track Day last year interesting. http://www.lowsideracing.com/Videos/ Scroll down to 2007_11_12 NESBA Barber Schooled By Skip.wmv and play it. He starts 14a about 1:28 on the video. I'm a novice rider. For me 14a and 14b are two turns. Barber is a wonderful track.
  5. Hello! I will introduce myself. I'm an old street rider, started in 1955 - scooters, cruisers, sport touring - but new to modern sportbikes. I now ride a 2006 GSX-R 750 which is having it's first birthday this week with 8,808 miles showing on the odo now. I've done 9 track days this summer - 835 track miles. Wow! What a thrill. I actually did a CSS School in the mid-1980's which was held at Roebling Road, Ga. on Kawasaki 500 twins. I rode a Honda VFR 500 at the time. I remember I was timid, doubtful, and slow. I'm now learning that I don't really know very much about riding a motorcycle. So I'm paying attention to control riders suggestions and keeping an open mind. And, I'm reading in this forum. Comment and advice will be welcome.
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