Tuesday, March 10, 2009

The physics behind the stability of a bike.

Nice!... from ibiketo.ca.

It gets into how the design of the bike affects its handling, stability and performance. Originally printed in 1970, 'Physics Today' reprinted it in 2006.

... that the faster a bicycle moves the easier it is to ride (because a smaller steering adjustment is necessary to create a centrifugal correction)... Nevertheless this theory can not be true, or at least can not be the whole truth.

From ibiketo.ca: Jones discovered that a bicycle that has had its front forks reversed so that the rake (curve of the fork) points inward ends up being a very stable bike that will self-correct when pushed and released riderless.



As it turns out this bike is too stable to be a good bicycle. Most modern bikes are built on the edge of instability to provide greater responsiveness.

The article is good, and if you're not that into the numbers, the theory is described on the first page or two, so definitely worth while at least reading that..

Here is the link to the article and to ibiketo.ca source.

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