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Old 01-08-09, 03:30 PM
  #8  
gganio
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Indeed, I have translated some taobao posts with babelfish.yahoo and it seemed to say that the product was not of best quality. But I am not sure, it was a babelfish translation.

My experience is that solid rubber is not too fast. Somewhat similar to pneumatic tires at 90 psi.
You want to use Polyurethane with 75% rebound or better and 83A or less hardness.
If you use PU of 50% or less rebound then you are in a situation similar to solid rubber.

Maybe one day a new small wheel will come out that will join together the advantages of PU tires with the advantages of the pneumatic ones.
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