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Piaggio MP3, was 02 GL1800
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Poor Boy has passed away, several years ago.
I have an Email from him just prior to that, and he said he is in "bad health" and that was the last that I heard from him, until later when I saw an Obit.
 

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I am in need of a poorboy alternator kit for my '85 GL1200. Anyone know where to look? Thanks.
I did my own with parts I fabricated out of angle iron and a chevy one-wire mini alternator. message me off line if you want help as I don't check this site often. Also, look up on youtube for video on Gl1200 alternator conversion, esp. one by 'Chris Earlywine' it will help you judge if you want to go that route)
 

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85 GL1200A
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Discussion Starter · #8 ·
What makes you think you need one? I'd be willing to bet more than 50% of those installed weren't needed.
And, replacing the stator is probably easier than altering the bike for any car alternator kit.
Well, I've been through that process on two occasions and my opinion is that the $1000 it takes for the shop to do it is worth it. The engine really doesn't have to come out of the frame, but it has to be just as disconnected as if you were going to. It has to be able to be rotated so that the can where the stator lives can be removed.
i'm on my second 1200. The first thing I did was to solder the stator wires together.....and it went out anyway!!! What's up with that? It ony takes about 15 minutes to switch out the stator, but it takes a day and a half to get to it and then put the engine bac in place.
i have ordered a chevy, mini, one wire alternator. I need to order a pully for the crankshaft, a belt and create the brackets. I'm 80 now and just don't feel like taking the engine out. i've ohmed the windings and they are ALL THREE OPEN!!! i don't trust the regulator either. I ohmed it out and it just didn't look right, so I'm going a different route this time..
Thanks, everyone, for all the support. I've found lots of great info on this sight.
Be blessed, DT
 

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Piaggio MP3, was 02 GL1800
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63,393 Posts
Dennis is adamant in staying Stock.
Stators are not worth a damn, I would prefer the Alternator route every time.

With care, they can be totally hidden, so what is the difference, except with an Alternator you get much better reliability and easier to repair if needed.
 

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While the stator is what dies, I think the real bad guy here is the shunt regulator. Switch to a series regulator and I bet the stator would last forever.
 

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The newer shunt regulators use internal MOSFET components (no such animal as a MOSFET RR - shunt or series). These shunt RRs are generally a 5 wire unit, 3 stator wires and a positive and negative connection - no sense wire. The sensing is through the positive wire. These units are generally larger as well. The series RRs are larger again and do require a new spot to be installed in. Same wiring - 3 stator, and a negative and positive connection.

Most connect the stator wires with the positive/negative directly to the battery. Need to cap or remove the existing RR connector(s) making sure there are no live wires that can go to ground.

Think a key issue is the cleanliness of all connectors. Crud/dirt build up is not your friend.
 
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