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Old Apr 06, 2010, 03:34 AM
NeverAgainVolunteerYourse lf
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Australia, QLD, Regents Park
Joined Mar 2007
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Measuring Kv of a Brushed motor


Three examples,
Motor 1
0.29 V at 2575 Calculated Kv is 8583
came out of a cordless vacuum 540- size, screams at low voltage

Motor 2
1.73 V at 2575 Calculated Kv is 1488
was in a tug I brought, just an average 550

Motor 3
5.11 at 2575 Calculated Kv is 503
a BIG motor I got for my Kingfisher supposedly 5000 rpm at 12 volt
comes out very close I reckon

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Last edited by nick_75au; Jan 17, 2012 at 01:59 AM. Reason: Making someting useful out of an old rant
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