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TR 4 Timing mark

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carpecursusII

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glemon said:
Yikes, been so many years, geometry, pulley is 5.5" I assume this is diameter, circumference is Pi x diameter, so 3.14 x 5.5" = 17.27" (circumference) / 360 (degrees) = .048" per degree (rounded). Times 4 (degrees) = .192" inches, a hair over 3/16" of an inch. Correct?
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