Skip to main content

Reply to "Airless ti(y)res"

I think there is a consensus that thinner, high pressure tires change cal constant less due to temperature change than thicker or knobbier, low pressure tires. The exact reasons for that are still open to debate.

I have no experience with solid tires. But it seems surprising that cal constants of solid rubber tires would not be affected by temperature since the material properties of rubber are known to vary with temperature. However, I learned in a quick web search that "fillers" added to rubber can dramatically change this effect. In fact, natural rubber gets stiffer with increasing temperature, but if "fillers" are added to the rubber this effect can be reversed, and the rubbers gets softer with increasing temperature! Perhaps the solid tire people have found just the right amount and type of "filler" to add so that the stiffness does not change with temperature.

×
×
×
×