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Thread: Stator problem?

  1. #1

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    Oct 2010
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    Pontypool, South Wales.
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    I have a UK, Cx500 1980. Ran fine until it started to miss at about 5000 to 6000rpm. Can't go above about 55mph. I initially suspected fuel starvation and changed the air and all fuel filters to no avail. Then, having read some of the past posts figured I might have a stator problem.



    The check for this, according to the Haynes Manual is to check the resistance on the wires which join at a block mounted under the seat on the rear mudguard. There are three blocks, one big and two small. The manual suggests checking only the big block starting with white to blue and white to green, However the big conblock doesn't have a white or a blue. So I assumed they must mean the big block and the smaller block which has two wires, white and blue.



    My Big block has 2x4 = 8 terminals they are, on the top row, Light blue, blank, Light blue with red, Light blue with white.



    On the next row they are, Orange, Green, Orange with red, Orange with white.



    Using both the larger and the White/blue smaller block I got the following readings compared with the Haynes suggested tollerences.



    White to blue, 77 to 95 ohms was found to be 172 ohms.



    White to green, 387 to 473 ohms was found to be 286 ohms.



    Orange to green, 95 to 116 ohms was found to be 112 ohms.



    Light blue to green, 95 to 116 ohms was found to be was found to be 111 ohms.



    Orange with red to green, 81 to 99 ohms, was found to be 92 ohms.



    Light blue with red to green, 81 to 99 ohms, was found to be 96 ohms.



    I took it from this that the stator had failed and ordered one on the net.



    Problem was, I didn't realise there were more than one component in the alternator which had windings on. There was the Alternator stator, which I ordered, and the advance pulsar coil which I removed from the small alternator cover at the back of the engine/gear box 395 thinking it was the same thing.



    Anyway, the problem is, which one do I need? the Advance pulsar stator or the Alternator stator or both? If I need to remove the alternator stator, do I need to remove the engine and split it and is this easy or require special tools?

  2. #2

    Join Date
    Oct 2010
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    Pontypool, South Wales.
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    The 2nd last paragraph doesn't make perfect sense. It should have read that the advance pulser was taken out and tested independently and registered a resistance of 395 ohm.s

  3. #3
    Senior Member Reg in Bristol's Avatar
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    The white to blue and white to ground are the usual suspects

    and your readings strongly indicate a failing stator.

    To be precise, not the whole stator. Just the two coils that power

    the ignition.

    Your options are a rewind ( engine out job)or fit an Ignitech



    The advance coils at rear dont sound too healthy so

    the Ignitech which doesnt need em, looks like a good option
    I started to resurrect my site at
    http://tinkrin.netau.net/index.html
    but TBH, cant be arsed

  4. #4

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    Pontypool, South Wales.
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    So it's the big one I ordered which is at fault?



    Which looks like this.

  5. #5

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    Oct 2010
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    Pontypool, South Wales.
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    By the way, is there supposed to be oil all over the advance pulser windings?

  6. #6
    Senior Member Reg in Bristol's Avatar
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    yes and yes, oils quite normal



    the one you ordered looks like an Electrex

    Some people had a few probs with em but from what I gather it was due to

    the charge coils chafing and grounding on the rear cover.

    As your going that route, I suggest you take your time and do some test fits

    to check theres no chafing before final bolting up.

    I'm not aware of a source for new advance coils

    the bike may not have quite the get up and go with out good ones.
    I started to resurrect my site at
    http://tinkrin.netau.net/index.html
    but TBH, cant be arsed

  7. #7
    Senior Member Reg in Bristol's Avatar
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    Doh!

    "Electrex world"



    I didnt look a the top of the page
    I started to resurrect my site at
    http://tinkrin.netau.net/index.html
    but TBH, cant be arsed

  8. #8

    Join Date
    Oct 2010
    Location
    Pontypool, South Wales.
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    I could always send the stator back and go with an ignitech.



    Their web site doesn't look very user friendly, where can I order one from and do they come with clear instructions?

  9. #9
    Dana_h_acdc's Avatar
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    Aug 2010
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    Ocala FL, 34479
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    our forum here does a group buy it get the ignitech cdi units i have one in my bike it is awesome but my cam chain ate my engine
    Gotta Love A Honda... If the Apocalypse ever comes there will be 2 things left running; cockroaches and Hondas

    JH2PC011XBM201193

    1981 CX500 Deluxe "ZombieTurd"(resurrected)

    everyone says you can't polish a turd so the name is gonna stay

  10. #10

    Join Date
    Oct 2010
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    Pontypool, South Wales.
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    'Group buy'? what does that mean, how does it work globally and how do I access it?

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