Thursday, January 12, 2012

How much of a difference is there in speed displayed with one more tooth on a mopar speedometer pinion?

60's mopar with auto transHow much of a difference is there in speed displayed with one more tooth on a mopar speedometer pinion?
That depends on the number of teeth on the old gear. If it had 20 teeth the difference going to a 21 tooth would be 1 divided by 20 or 5% slower speedo reading. 15 tooth to 16 tooth would be 7.5% slower.How much of a difference is there in speed displayed with one more tooth on a mopar speedometer pinion?
60% faster

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