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Valkyrie Riders Cruiser Club > General > 1500 Tech Board > Alternator Problem
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Author Topic: Alternator Problem  (Read 2105 times)
Rio Wil
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« on: June 30, 2011, 05:07:55 PM »
 A couple of years ago my alternator failed and just got around to investigating the issue.  Checking continuity between the slip rings revealed a open circuit.  Closer looking showed a break in the winding right at the white nylon post that supports the wire from the slip ring and then into the winding on the rotor!!!!!!!
Well....KISS my GRITS........anyone got a good rotor.... tickedoff....maybe we can work out a deal.... Smiley
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RP#62
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Gilbert, AZ


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« Reply #1 on: June 30, 2011, 05:30:02 PM »
Why not solder it back together?
-RP
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Rio Wil
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« Reply #2 on: June 30, 2011, 07:18:31 PM »
Not enough wire to make a physical connection to solder....

OK, so here is a big dummy question?

What are the differences that make a 90 amp alternator vs a 40 amp.?  Is the MARS 90 amp the same physical size as the stock 40 amp'er.  If so/if not  what makes up the higher capacity?
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Valker
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Wahoo!!!!

Texas Panhandle
« Reply #3 on: June 30, 2011, 07:48:27 PM »
You can have MARS or a local shop rewind that one.
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I ride a motorcycle because nothing transports me as quickly from where I am to who I am.
Rio Wil
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« Reply #4 on: June 30, 2011, 08:32:00 PM »
That is the reason for my question about what makes a 90 vs 40 amp alt.  Does rewinding the rotor present any opportunity to increase the alternator capacity?
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Bobbo
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Saint Charles, MO
« Reply #5 on: June 30, 2011, 09:12:50 PM »
A higher amperage alternator needs heaver gauge wire.  The voltage is determined by the number of turns in each coil.  To keep the same voltage, the rotor will need to be physically larger, or the core will need to have higher permeability.  Higher permeability allows the core to be smaller to allow for the heaver gauge wire.
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HayHauler
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Pearland, TX
« Reply #6 on: May 07, 2012, 10:43:10 AM »
Back to the top!!!  I might need to look at this in the coming weeks...  Smiley

Hay  Cool
Jimmyt
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Canuck
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Palmetto Bay FL
« Reply #7 on: May 07, 2012, 04:00:23 PM »
This is where mine failed.  It can be caused by a bad battery over working the alternator.  blackrams confirmed my battery had a bad cell.  Have your battery tested prior to using it with your new alt.
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CASABROKER
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« Reply #8 on: May 07, 2012, 04:41:07 PM »
Well all wish we had a good rotor I have all the other good parts.  Buy the new one for the goldwing and clock it.  I wouldn't even think about fixing it.  Can we say stranded!!!  The place in West Virginia best price brand new OEM hitachi made in Japan.  Stay away from the China crap.
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HayHauler
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Pearland, TX
« Reply #9 on: May 07, 2012, 07:46:14 PM »
Already ordered the goldwing one and some dampeners.  Just wanted to be able to say that I found the problem with mine whether I fix it or not.  I am one who has to know what and how things work and how they failed. 

I will post my findings when I'm done.  Hopefully this Sunday.

Hay Cool
Jimmyt
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