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Old 11-03-2021, 01:28 PM   #101 (permalink)
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Polarity should be a matter of swapping the two lead wires. If anything it's probably some gotcha like cooling air or one-way bearings.

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Old 11-03-2021, 01:43 PM   #102 (permalink)
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Quote:
Originally Posted by freebeard View Post
Polarity should be a matter of swapping the two lead wires. If anything it's probably some gotcha like cooling air or one-way bearings.
Alternators are generally case grounded for one leg. I accept cooling air issues but that shouldn't be a problem since most airpowered things turn only one way
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Old 11-03-2021, 02:58 PM   #103 (permalink)
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All that being the case, here's the thinking behind ganging or coupling two together:

www.autospeed.com/: Designing and building Tuned Mass Dampers to reduce driving light vibration

A dumbbell grasped in the middle has a high polar moment.

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