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Academic paper discussing physics of steering bikes/motorcycles...

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Old 01-14-05, 02:13 PM
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Steelrider
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Academic paper discussing physics of steering bikes/motorcycles...

Ran across this paper that discusses the physics of steering bikes/motorcycles, thought some might be interested. You may stop at the mathematics, all may be of interest, none may be...to each his/her own. Enjoy.

Steering in bicycles and motorcycles
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Old 01-14-05, 02:20 PM
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good stuff. Makes me want to take a course to improve skill.
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Old 01-14-05, 02:45 PM
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I might print it out and read it during my next shiest...

There once was study by some English dudes who wanted to prove you could steer a bike by leaning. The welded the steering strait on a motorcycle. The rode it and tried to make it turn. No mater how much the rider leaned...it still went strait!

Then...they drank a pint...
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Old 01-14-05, 03:25 PM
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Originally Posted by Steelrider
Ran across this paper that discusses the physics of steering bikes/motorcycles, thought some might be interested. You may stop at the mathematics, all may be of interest, none may be...to each his/her own. Enjoy.

Steering in bicycles and motorcycles
This and other interesting but perhaps counterintuitive things are discussed in a great motorcycling book called "A Twist of the Wrist". Can't remember the author, but if you're into motorcycles it's a must read.
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Old 01-14-05, 03:50 PM
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Keith Code I beleive wrote "A twist of the wrist".
I ride motorcycles quite a bit and am quite familiar with "countersteering". I countersteer all the time going into turns at the local track I take my motorcycle to. There are a lot of forces acting on a bike to keep it upright which is why countersteering is an effective tool to turn.

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Old 01-14-05, 07:08 PM
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Originally Posted by galen_52657
I might print it out and read it during my next shiest...

There once was study by some English dudes who wanted to prove you could steer a bike by leaning. The welded the steering strait on a motorcycle. The rode it and tried to make it turn. No mater how much the rider leaned...it still went strait!

Then...they drank a pint...
Don't recall that one, but Keith Code created the "No B.S." bike (as in Body Steering) to prove the point:
https://www.superbikeschool.com/machi...bs-machine.php
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Old 01-14-05, 07:10 PM
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Originally Posted by galen_52657
I might print it out and read it during my next shiest...

There once was study by some English dudes who wanted to prove you could steer a bike by leaning. The welded the steering strait on a motorcycle. The rode it and tried to make it turn. No mater how much the rider leaned...it still went strait!

Then...they drank a pint...
Don't recall that one, but Keith Code created the "No B.S." bike (as in Body Steering) to prove the point:
https://www.superbikeschool.com/machi...bs-machine.php

Keith Code has written several excellent books on motorcycle skills:
https://www.motorcycle.com/mo/mcracin...ookreview.html
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Old 01-14-05, 08:26 PM
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Don't forget Tony Foale (sp?) and his work on motorcycle dynamics.

Now, if only bikes were motorcycles....
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Old 01-14-05, 09:12 PM
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Originally Posted by Thylacine
Don't forget Tony Foale (sp?) and his work on motorcycle dynamics.

Now, if only bikes were motorcycles....
...thennn, we'd all be a little heavier and riding motorcycles?!
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Old 01-15-05, 09:37 PM
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Originally Posted by Steelrider
...thennn, we'd all be a little heavier and riding motorcycles?!
Perhaps, but the inference is that bicycles are not motorcycles and aside from the physics associated with having two wheels and countersteering, there's not much in the way of bike-handling skills that transfer from street/track motocycle to road bicycles. After all, with a motorcycle you've usually got a rider who weighs less than the bike he or she is riding whereas the adult cyclist usually outweighs their bicycle by 80 to 100+ pounds For example, while hanging your body and knee off the side of a motorcycle does a good job of lowering the center of gravity and making the bike corner well, it doesn't work so good on a bicycle where you basically do the opposite and put your body weight on the outside pedal when cornering. Well, and then there is that whole horsepower thing...
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