(Topic ID: 170035)

Balls and magnetism

By Luppin

7 years ago


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  • 29 posts
  • 10 Pinsiders participating
  • Latest reply 2 years ago by Sonic
  • Topic is favorited by 14 Pinsiders

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    #16 7 years ago

    TheBlackKnight, very informative as usual. I used to use the pinball life ultra shiny, but it looks like they dont sell them anymore. Where do you get your pinballs, I have but 1 machine and its got magnets. I want the best, not necesarrily the brightest

    Thanks again

    2 weeks later
    #18 7 years ago
    Quoted from xTheBlackKnightx:

    For people's technical interest here is the actual industry definition of "shiny pinballs" (G16A) in terms of steel ball grade and how they are determined.
    This is not related to the steel composition, which was discussed earlier (ie chromium steel versus carbon steel).
    These are actual numbers you are looking for if you go hunting for specifications for these "shiny pinballs".
    There are even HIGHER industrial grade levels, but there is no justification for use in a pinball machine for tolerances.
    They simply make no sense for added cost.
    Any enthusiast could simply take these tolerance numbers to a ball bearing manufacturer with these specs and get an many chromium "pinballs" (1 1/16", Grade E52100 steel, 80 grams of average weight) and get as needed by lot size by 100-10,000.
    The median weight difference is negligible for tolerance if it stays within +/- 0.5 gram for GAME use.
    I personally would not accept any more than +/- 0.25 grams deviation.
    Ball Grade - G16A
    Variation of Ball Diameter (0.000001 IN.) - 16
    Deviation from Spherical Form (0.000001 IN.) - 16
    Surface Roughness RA MAX. - 1.00
    Deviation from Ball Lot Diameter (0.000001 IN.) - 32
    Happiness is a "shiny" pinball that you can see your face in?
    I hope people are not paying much more than a $1.00/ball because the realities are chromium "shiny" pinballs cost less than $0.45 to make. Per production cost from the factory is at $0.25 in mass volume, if you can get the specs right.

    So what balls do you use for any games with magnets? Im not concerned about shiny, but I dont want my one and only playfield, Metallica, to get hammered.

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