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Thread: Off topic unless CAT made a welder.....

  1. #21
    Join Date
    Nov 2006
    Location
    Corralitos, Ca.
    Posts
    13,176

    Default

    So how did you establish 12v and 3-4 amp (3 to 4 ohm coil) power supply?

  2. #22
    Join Date
    Dec 2015
    Location
    Bakersfield, CA
    Posts
    350

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    Keep in mind I'm electronically, well, not a genius.

    I had 24v the first attempt because ( I think) I took a ground from one battery and picked up the hot (12v) from the other battery. Not on purpose, but because it was going to make the installation cleaner.
    As suggested, when I got both pos and neg from the same 12v battery I got 12v only.

    To admit my ignorance, I don't know what the amperage is from the 12v battery to the coil.

  3. #23
    Join Date
    Jun 2007
    Location
    Colorado West
    Posts
    1,006

    Default

    And all this was easier how than just fixing the mag?

  4. #24
    Join Date
    Dec 2015
    Location
    Bakersfield, CA
    Posts
    350

    Default

    I contacted the supplier of the transducer ( which takes the place of the condenser ). He said no worries about amperage - only that I had 12 volts.

    Re: worth the trouble ? I borrowed this welder from a friend. It didn't run when I got it. I did get it running and used it to build a fence ( about1500 ft). Then the ignition started acting up. I could not find any info on this model. I did not have a puller to get to the Mag, which, I think, sits behind the flywheel. If/ when I got he flywheel off - with out breaking it - a mag rebuild would be $100.00 minimum.

    So, for about the same price as that I installed a new coil and triggered it with the original points. A much simpler system that can be repaired with out any engine disassembly.

    And, now I can return it in running condition.

  5. #25
    Join Date
    Nov 2006
    Location
    Corralitos, Ca.
    Posts
    13,176

    Default

    Somewhere we got off course. The amperage concern is for the longevity of the coil and points. The Kirk wiring diagram clearly indicates a 3-4 ohm resistance required. That is what will determine the life of the coil and points. Doesn't have anything to do with a 12 volt initial feed.

  6. #26
    Join Date
    Dec 2015
    Location
    Bakersfield, CA
    Posts
    350

    Default

    "So how did you establish 12v and 3-4 amp (3 to 4 ohm coil) power supply?"

    I read this to mean how did I supply a 3-4 amp power supply.

    The Kirk instructions specify a 3 to 6 ohm (primary side) ignition coil to work with the transducer.
    I bought the coil from Kirk , matched to the transducer.

    Those two times replaced the magneto.

  7. #27
    Join Date
    Nov 2006
    Location
    Corralitos, Ca.
    Posts
    13,176

    Default

    OK, you have a matched system supplying 2-4amps to the points.

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