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Old 09-04-2018, 09:14 PM   #3 (permalink)
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Join Date: Jun 2012
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I think smartphones have G-sensors and compass sensors on them, but they're reading results well below engine vibrations (1 to 2 readouts per seconds, to preserve battery life, vs 4-5000 readouts necessary to measure vibrations).

Butt dyno still gives a good estimate!
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