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Old November 5th, 2009, 07:39 AM   #5
inlina
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Join Date: Jan 2007
Location: Melbourne, Australia
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The durometer (hardness) of a wheel is only one factor on the actual and perceived hardness of a wheel. It relates only to a 'test' piece of the material it is made from.

The way the material is cured in manufacture can make some apparent differences. The material could be formulated to be 103A on a test piece (ie. a molded rectangular sample), but in the way the material cures in a wheel mold could differ slightly from the test piece and result in a slightly different duro. The croslink bonds may form differently in the wheel mold to a test plaque mold.

The design of the wheel can also result in a wheel feeling harder/softer despite the mateial's durometer. To wheels could use identical material but some people may feel one to be softer than the other depending on the design.

CG
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