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mikestrivens

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Posts posted by mikestrivens

  1. [mention]Gerontious[/mention] you may find that you have recovery with one of your credit cards. I discovered that my Nat West card has full recovery built in to the fee I pay to use the card. I have since cancelled my other recovery insurances.

  2. Thanks for the input, everyone. I was interested in how people cope with such situations. I suppose the answer is obvious, and the same as in any given situation; that anticipation of the road conditions ahead will allow a measured, un-panicked and timely response, minimising the likelihood of locking a wheel, which is where things go downhill.


    I hope you'll forgive me, but the physics of the situation interest me (it's my job!). The reason the bike tends to stand upright as you brake on a curve is that, since the bike is in contact with the ground, only it has a force acting on it to undergo the centripetal acceleration necessary to travel around the curve. Under braking, the rider will tend to obey Newton's 1st Law of motion, and carry on in a straight line, unless they essentially pull on the bike to help them round (which they will hopefully do!). The result is an increased moment about the point of contact with the road acting to make the bike upright. In fact, this moment exists even without braking, since the bike's centre of mass is above the point of contact (again, hopefully!). This explains why you sometimes see a motorbike travelling on upright after dumping a rider, although you don't with a bicycle due to the relatively low centre of mass. This means that the bike requires some input to remain banked (subtle counter-steering?). Presumably, increasing this input would allow the bike to remain banked under braking. Not that I'm going to try. :D

     

    Have a look at Total Control by Lee Parks. He explains the physics of motorcycle control very well.

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