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Differential ratios, wheel spin rate puzzle
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Posted by Ray on May 24, 2004 at 08:34:42 from (158.222.224.115):
I've asked several mechanics/machinists that I respect how locking one brake on a differential would affect the speed of the opposite wheel, and have gotten several mutually exclusive answers. Which one is correct? Assume the axle ratio is 3.00:1, which means the drive line turns 3 times for each 1 revolution of the wheel. If you lock one brake, does the opposite wheel: 1) continue to turn at the 3.00:1 rate? 2) speed up, rate determined by the spider gears which the engineers set depending on the axle width, tiresize, etc? or, 3) speed up, driven by the spider gears, up to 2x the axle ratio speed (up to 6.00:1 in this case). If there is a website illustrating this for the mathematically challenged among us, I'd love to see it. Thanks, Ray
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