Posted by willie in mn on January 06, 2013 at 18:28:32 from (205.188.116.74):
Thread below from yesterday about tire pressure warning systems brought up another conundrum. Does a tire low on pressure actually roll faster than when properly inflated? Bear with me a moment, I say it makes no difference. Circumference of a circle- For easy figuring let's use 3.1416 for pi, & 40" for the diameter, circumference equals 125.664" Deflate the same tire so it squishes out to give 38" height. Pi times 38 equals 119.38" Question is- where did the other 6.284" of tread go? To end the head scratching, it is still there. Key word in the problem is CIRCLE. When the tire squishes out at the bottom, it is no longer round, not a circle, & the diameter times pi formular does not apply. It has been over 50 years, I don't remember my trig classes, but there is a formula to calculate circumference of a deformed shape. That's my opinion, & I'm sticking to it. Willie
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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