Reply to "History of a Pneumatic Tire"

peteriegelRCMBB Founder

The previous post may be more complicated than necessary. We have a tire that has a constant of about 11070 counts per kilometer. How much does its size change with temperature? From my previous post we see that it ran at a fairly constant level of about 100 PPM/C for the entire 6 years.

This works out to about 5 counts per kilometer for every 10 degrees F.

If I precalibrate at 11070 counts per kilometer and the temperature rises 10 degrees F, my postcalibration constant will be about 11065 counts per kilometer.

The graph below shows how it actually worked out. My apologies for mixing metric and imperial units. I use a metric constant, but I measure temperature with a Fahrenheit thermometer.

1/27/066:34 AM

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