OB64A Neptune Magneto Blues Review

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This topic contains 21 replies, has 7 voices, and was last updated by Tubs Tubs 1 month, 4 weeks ago.

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  • Buccaneer
    Buccaneer
    US Member - 1 Year
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    #173232

    Thanks Tubs, looks like there’s more options that I imagined.
    I’m guessing the Harley coil is a little more spendy than the
    Onan repo coil, but it sure has more class!

    Prepare to be boarded!

    Buccaneer
    Buccaneer
    US Member - 1 Year
    Replies: 2973
    Topics: 830
    #173237

    Update- I robbed the coil from the OB34A 4 hp Neptune, and put it
    on the OB64A 6 hp Neptune, and now appear to have great spark!
    It’s ready to try out, but that 10″ of wet sloppy snow from yesterday
    is raining off the garage roof, right over the test barrel. Suppose to
    be 20 degrees warmer Tuesday anyway.

    I’m “re-thinking” about trying the pony coil, but now for the 4 hp Neptune.
    To get the plug wires to exit the coil and through the mag plate, I’d
    have to pull out the grommets and notch out the mag plate in the area
    shown in the photo. (hopefully neater than my free hand drawing!)
    Perhaps it wouldn’t be too much of a butcher job, and if it
    actually worked, I’d be happy. I’d still have to further whittle down the
    lamination, as the Pony coil hole is 7/16″ square.
    Only hesitation is that the B&S coil swap attempt was a total failure,
    and I have no idea why, less it’s the difference in design of the laminations.
    Not really sure what a JD Pony coil laminate look like either.

    Prepare to be boarded!

    Attachments:
    Tubs
    Tubs
    US Member - 1 Year
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    #173267

    Thanks Tubs, looks like there’s more options that I imagined.
    I’m guessing the Harley coil is a little more spendy than the
    Onan repo coil, but it sure has more class!


    Click on the eBay Link I Posted
    $15.00 + $8.75 Shipping.

    • This reply was modified 2 months ago by Tubs Tubs.
    • This reply was modified 2 months ago by Tubs Tubs.
    Buccaneer
    Buccaneer
    US Member - 1 Year
    Replies: 2973
    Topics: 830
    #173271

    I didn’t even notice the link before. That’s pretty cheap.
    I started altering the mag plate and the lamination
    to mount the pony motor coil. Stay tuned to see if
    that works better than the B&S coil!


    Click on the eBay Link I Posted

    $15.00 + $8.75 Shipping.

    Prepare to be boarded!

    Buccaneer
    Buccaneer
    US Member - 1 Year
    Replies: 2973
    Topics: 830
    #173444

    John Deere pony motor coil transplant update-
    I finished up installing the pony motor coil on
    the 72A Eismann magneto for the OB35A Neptune 4 hp.
    It appears to be a success. I didn’t have to butcher
    up the mag plate as much as I feared, and had
    not using the big rat tail file been so much fun,
    I could have enlarged the hole less, and made
    a better fit for my over sized grommets.

    For now, I reused the Wico style condenser with
    the threaded end for the primary coil, kill wire,
    and points connections. It tested at .32 mfd’s.
    Anyone know what the John Deere Pony Coil
    condensers are rated at?

    Moral of the story, if you try the B&S coil conversion, I hope you
    have better luck then me. I’ll be using the pony motor coils
    instead. Besides, they’re much easier to find and relatively
    affordable.

    Tried uploading a video 3 times to YouTube, but it never finishes processing,
    and the narrative is nothing but static, so you might want to turn your
    sound off!
    It does “spark” okay pulling it over by hand, but that’s problematic
    doing while filming, unless you have three hands, hence the electric drill, lol.

    Prepare to be boarded!

    • This reply was modified 2 months ago by Buccaneer Buccaneer.
    • This reply was modified 2 months ago by Buccaneer Buccaneer.
    • This reply was modified 2 months ago by Buccaneer Buccaneer.
    • This reply was modified 2 months ago by Buccaneer Buccaneer.
    Attachments:
    Tubs
    Tubs
    US Member - 1 Year
    Replies: 2219
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    #173519


    Your solution should really be helpful as there
    doesn’t appear to be an alternative. Success is
    its own reward and is measured by the time
    and effort invested.

    Tubs
    Tubs
    US Member - 1 Year
    Replies: 2219
    Topics: 127
    #173673

    • This reply was modified 1 month, 4 weeks ago by Tubs Tubs.
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