Thread: What makes an Economy tune?
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Old Wed, December 23rd, 2009, 03:14 AM
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See if this calculator helps...

Also, I think you boo-boo'd your calculation. I think you meant 21.6º of rotation at 1800 RPM and 2 ms. In any event, the rest of your math is correct.
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File Type: xls Engine Rotational Time.xls (30.5 KB, 38 views)
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