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Discussion Starter · #1 ·
I'm currently in the process of replacing my stator and was just curious while i have the cover off...does the rotor ever really need replacing? Permanent magnets can lose magnetism over time, but there's no way to test it, so I'm just curious whether I should change it for the hell of it. I have no idea how old it is, as the person I bought the bike from was not the original owner and knew very little about it.

Also, just to clear something up..I've been reading old posts about the alternator and the proper voltage at various rpms...and there is some mis-information going around i think. In one post someone actually said that it was normal for voltage to DROP when rpms increase. Others claimed that when revved up, the normal output of the alternator is 13.5. According to Clymer's, for 87-96 VT1100's, at 5000 rpm, the voltage across the battery terminals should read 14-15 volts. Just thought I would share.
 

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Discussion Starter · #4 ·
cmashadow96 said:
An interesting question and I have not seen any other posts about replacing the rotor. I would guess that it probably would not be necessary but maybe the magnets do lose power over time.
I replaced my stator last spring and got a 13.5V at idle and it did drop some when I revved it higher. I have also seen posts that sound like this is common and others that say it shouldn't happen. My battery lasted fine last year and I use running lights so I think the new stator is working fine.
Hmm that's really interesting and I just put in the new stator and got the same result...I wonder if Clymer's is wrong because it's performing opposite of how the manual says it should.
 
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