Gyroscopic effects of wheels on a bicycle debunked completely

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2011-04-15 4:57 PM

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Subject: Gyroscopic effects of wheels on a bicycle debunked completely
Turns out the gyroscopic effect has no effect whatsover in keeping a bike upright, contrary to popular belief.

It apparently has to do with the higher center of mass in the back relative to the front, which allows a falling bike to steer in the direction of a fall, and thus helping it stay upright.

Published in the most prestigious scientific journal (Science).

http://www.wired.com/gadgetlab/2011/...cycle-cornell/

2011-04-15 5:01 PM
in reply to: #3449396

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, Texas
Subject: RE: Gyroscopic effects of wheels on a bicycle debunked completely
What was their explanation of rollers?
2011-04-15 5:03 PM
in reply to: #3449396

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Elite
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Subject: RE: Gyroscopic effects of wheels on a bicycle debunked completely
Tell that to Jens Voight....
2011-04-15 5:42 PM
in reply to: #3449408

Master
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, California
Subject: RE: Gyroscopic effects of wheels on a bicycle debunked completely

Turns out the gyroscopic effect has no effect whatsover in keeping a bike upright, contrary to popular belief.

That article only means that there's an additional factor at work keeping the bike balanced (which is what they explained).  It doesn't mean the gyroscopic forces have no effect.



Edited by spudone 2011-04-15 5:46 PM
2011-04-15 5:48 PM
in reply to: #3449457

Master
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Subject: RE: Gyroscopic effects of wheels on a bicycle debunked completely
spudone - 2011-04-15 5:42 PM

Turns out the gyroscopic effect has no effect whatsover in keeping a bike upright, contrary to popular belief.

That article only means that there's an additional factor at work keeping the bike balanced (which is what they explained).  It doesn't mean the gyroscopic forces have no effect.

 

Without having read the science article itself, it seemed that the additional gyros placed above the wheels counteracted the gyroscopic effect. So it actually is a bike with no gyroscopic effect.

2011-04-15 6:24 PM
in reply to: #3449396

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Subject: RE: Gyroscopic effects of wheels on a bicycle debunked completely
I like Gyros they taste really good.

2011-04-15 6:39 PM
in reply to: #3449396

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Elite
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Laguna Beach
Subject: RE: Gyroscopic effects of wheels on a bicycle debunked completely

Take a bicycle wheel and an office chair.

Get the wheel rotating fast. Hold it vertically as it rotates. Lift you feet off the ground while seated on the chair, wheel spinning quickly in your hand.

Turn the wheel horizontal.

Incredible, isn't it.

2011-04-15 7:58 PM
in reply to: #3449467

Master
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Subject: RE: Gyroscopic effects of wheels on a bicycle debunked completely
agarose2000 - 2011-04-15 3:48 PM
spudone - 2011-04-15 5:42 PM

Turns out the gyroscopic effect has no effect whatsover in keeping a bike upright, contrary to popular belief.

That article only means that there's an additional factor at work keeping the bike balanced (which is what they explained).  It doesn't mean the gyroscopic forces have no effect.

 

Without having read the science article itself, it seemed that the additional gyros placed above the wheels counteracted the gyroscopic effect. So it actually is a bike with no gyroscopic effect.

Removing that factor from their experiment only shows that their explanation holds true.  It doesn't mean that the gyroscopic effect is also false... see what I mean.

 

Tom Demerly. - 2011-04-15 4:39 PM

Take a bicycle wheel and an office chair.

Get the wheel rotating fast. Hold it vertically as it rotates. Lift you feet off the ground while seated on the chair, wheel spinning quickly in your hand.

Turn the wheel horizontal.

Incredible, isn't it.


Conversely: try rolling along on your bike on an icy road, then lock up the brakes and note the difference in balance.

Actually don't try that unless you enjoy falling

2011-04-15 8:52 PM
in reply to: #3449396

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Extreme Veteran
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Subject: RE: Gyroscopic effects of wheels on a bicycle debunked completely
I used to practice rolling the mx bikes front wheel up on a sheet of plastic, grab some front brake  and see how long I could ride it. (Its good practice for mud races)
2011-04-15 9:33 PM
in reply to: #3449396

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Champion
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Tacoma, Washington
Subject: RE: Gyroscopic effects of wheels on a bicycle debunked completely
And if you wanted to take it further, a motorcycle will NOT turn until you counter-steer it. Proven by the "No BS bike" at Kieth Code's racing school. It's a race bike with a second set of handlebars welded to the frame, so that it debunks the myth that you can turn the bike by leaning it. People will lean, finesse, and torque it all day and it WILL NOT turn. So... When you add more mass such that the gyroscopic effect is greater, it takes over completely.
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