Magneto white wire

Discussion in '2 Stroke Bicycle Engines & Kits' started by Bob E., Jul 30, 2018.

  1. Bob E.

    Bob E. New Member

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    I need lights to be legal. So, I'm in the planning stage of my electrical system.
    The instruction manual says measured resistance between the black and white wire should be 2.3 ohms. Mine reads 333 ohms. Same as blue to black. blue to white and black to engine are both 0.8 ohms. I'm assuming I've been screwed out of my 6v charging circuit?
     
  2. Bob E.

    Bob E. New Member

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    IMG_2048.JPG
    The white and blue wire run to the same lug and the black wire goes to the other lug which is grounded. I tried lift the ground hoping I might get that 2.3 ohm reading, but without being grounded it was just open.
    I see this mag on ebay with the blue and white wire running to separate lugs has an extra solder joint between the coil and core.
    Untitled.jpg
    Looks like I'm buying a new one.
     
  3. crassius

    crassius Well-Known Member

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    your info is for the older three wire mags that never worked properly for lighting

    newer mags only have the white wire as a spare in case the blue wire fails

    best way for lights is to get a whole system that runs all lights off of a rechargeable battery that you can plug in at home - usually under $40 with a real headlight instead of just the 'safety' light used on bicycles
     
  4. Bob E.

    Bob E. New Member

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    That's basically what I want to do, but 99% of the time I'll only be using a brake light. I was hoping the magneto could maintain the battery so I wouldn't need to stick it on a charger too often.
     
  5. crassius

    crassius Well-Known Member

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    not worth the effort - a good system usually lasts 8 hours between charges for all the light you'll need
     
  6. Bob E.

    Bob E. New Member

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    Any links for the kind of system your talking about?
    :)
     
  7. crassius

    crassius Well-Known Member

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    haven't looked in a while, but cree used to make some up around 1800 lumens - some sets also had turn signals & brake lights
     
  8. Bob E.

    Bob E. New Member

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    Great, just got my new magneto. Described as 6v, and pictured as a true 3 wire, but it's the same exact friggin' thing that came on my engine! [​IMG]
    Does anybody still sell the 6v magneto coils? I already bought all my 6v electrical components at the same time I got the engine kit.
    I sure don't want to give that one guy on ebay $30 for the 6v add on coil, which as I understand is powerful enough to require a voltage regulator, Which he also sells for another $30... [​IMG]
     
  9. crassius

    crassius Well-Known Member

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    if you would just look around the forums a bit, you'd see that years ago when mags had old style three wire windings, everyone had problems with them - usually ignition failures

    new mags have a white wire as a spare only because folks thought they were getting a stripped down model when two wire mags became the standard

    sorry, but you bought all that 6v stuff before you did the required reading
     
  10. Bob E.

    Bob E. New Member

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    The only real issue here is false advertisement among ebay venders
     
  11. Bob E.

    Bob E. New Member

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    And based on some reviews I'm reading on popular vendor websites the ebay guys aren't the only ones who like to play bait and switch with pictures and descriptions...
     
  12. crassius

    crassius Well-Known Member

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    sellers have been doing that so long that it really isn't an issue these days - more of a commonality

    everyone has to read and ask questions first - I rarely buy anything without questioning the seller by email first, and also checking both of the main forums
     
  13. Bob E.

    Bob E. New Member

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    So, where can I buy one that actually has the 6v charging coil and not just a dummy wire?
     
  14. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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  15. Bob E.

    Bob E. New Member

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    Doesn't look like he sells the factory ignition coil/6 volt stator?
    I have a headlight, tail light, brake light, horn, and a battery. except the brake light it's all for show, to meet moped requirements in order to be street legal. All I want is the stator Everything I've read says these engines are supposed to come with and most online vendors seem to be lying about selling.
     
  16. crassius

    crassius Well-Known Member

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    motors used to come with that, but it was because the mag was built for a moped with different ignition system - that mag never made lights work on these motors without killing the ignition

    read threads from 5 or more years ago when folks still tried to make it work

    if you find a seller that still has that old mag, you will fail like they did
     
  17. Bob E.

    Bob E. New Member

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    Seems like some say it works, others say it don't, and it seems to me the ones who can correctly identify the attached picture are the ones who say it works and the ones who can't say it don't... I can I.D. that picture so I'll keep looking for one.
    Ohms-Law.png
     

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