Spoke breaking repeated again and again
05-03-08, 04:24 PM
#26
Keeping A Low Profile
Join Date: Oct 2007
Location: Atascadero, California
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Bikes: Specialized Hardrock Sport [1998], Dahon Speed P8 2007, 1994 Diamond Back Ascent and a couple of Schwinn Stingrays [one boys, one girls] from circa 1977.
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No, dwood is saying that a spoke does not go beyond yield once it is tensioned in a wheel. There is elastic stretching. This is true and nothing will cause a plastic deformation. A plastic deformation will only happened if something hits the spokes, like your derailer or if the rim fails and tacos.
A suggestion for T-Turtle: don't believe everything you read that has been written by 'bicycle experts' even if they claim to be engineers. I suggest you do some independent study in the Mechanical Engineering field.
05-03-08, 05:08 PM
#27
NeoRetroGrouch
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No, dwood is saying that a spoke does not go beyond yield once it is tensioned in a wheel. There is elastic stretching. This is true and nothing will cause a plastic deformation. A plastic deformation will only happened if something hits the spokes, like your derailer or if the rim fails and tacos.
05-03-08, 05:49 PM
#28
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There is some. Have you ever taken out a spoke and it has a bend in it? That is a plastic deformation. But I was saying that stress relieving does cause some plastic deformation (disputed by dwood). Once the wheel is built and tensioned, there should be no more plastic deformation.
I also meant that there is no normal force that will cause a plastic deformation. Once a wheel is built, the spoke will only plastically deform from some outside force, like a stick in the spokes.
I also meant that there is no normal force that will cause a plastic deformation. Once a wheel is built, the spoke will only plastically deform from some outside force, like a stick in the spokes.
