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Putting 18 pole stator on gs750 originally equipped with 12 pole stator

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    #1

    Putting 18 pole stator on gs750 originally equipped with 12 pole stator

    I am thinking of doing this since the charging system on my '78 gs750 is barely adequate and still has the original regulator/rectifier and stator. Do the 18 poles charge better than the 12 poles? I realize I'd have to change out the rotor but I'd be happy to do that if It's a upgrade over a replacement 12 pole setup.
    1978 Suzuki GS750

    Past bikes owned:
    1978 Suzuki GS750E, 1979 Suzuki GS750E, 1980 Suzuki GS850, 1977 Suzuki GS550, 1969 Honda CB350, 1976 Harley Davidson SS175, 1979 Motobecane 50V, 1978 Puch Maxi, 1977 Puch Newport, 1980 Tomos Bullet, 1978 Motobecane 50VLA, 1978 AMF Roadmaster
    Tags: None
    #2
    I did it on my 77 GS750, with a 6 wire honda reg rec and AGM battery. With lights on anything over 2K revs and it shows 14.3 volts on the meter. I also have heated grips and no problems.
    My bikes 79 GS1000 1085 checked and approved by stator the GSR mascot and 77 GS750 with 850 top end, GS850g, and my eldest sons 78 GS550, youngest sons GS125. Project bike 79 GS1000N

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      #3
      I recently discovered my bike has a 18 pole stator. I'm pretty sure it had been dropped on the left side so I'm guessing the stator cover and stator were damaged and the PO installed the newer stator and rotor

      It works fine for me...
      Jordan

      1977 Suzuki GS750 (My first bike)
      2000 Kawasaki ZRX1100
      1973 BMW R75/5

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        #4
        Supposedly they charge a little better, because they were used on any GS that did not have a kick starter.

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        #2 son: 1980 GS1000G
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          #5
          When changing from a 12 pole to an 18 pole on my 1978GS750EC, do I have to change anything else? (ie. rotor, regulator, rectifier)

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            #6
            Originally posted by co587 View Post
            When changing from a 12 pole to an 18 pole on my 1978GS750EC, do I have to change anything else? (ie. rotor, regulator, rectifier)
            As hinted at in this thread, you’ll need the matching rotor designed for the 18 pole stator.... best to upgrade to a series r/r at same time.
            1981 gs650L

            "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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              #7
              Originally posted by tom203 View Post
              As hinted at in this thread, you’ll need the matching rotor designed for the 18 pole stator.... best to upgrade to a series r/r at same time.
              I actually did end up going this route about a year ago with a SH775 regulator/rectifier. While there I cleaned up my wiring as well. It charges beautifully now.

              Matt
              1978 Suzuki GS750

              Past bikes owned:
              1978 Suzuki GS750E, 1979 Suzuki GS750E, 1980 Suzuki GS850, 1977 Suzuki GS550, 1969 Honda CB350, 1976 Harley Davidson SS175, 1979 Motobecane 50V, 1978 Puch Maxi, 1977 Puch Newport, 1980 Tomos Bullet, 1978 Motobecane 50VLA, 1978 AMF Roadmaster

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