Put sound into an American Models S Scale GP-9

Discussion in 'G / O / S Scale Model Trains' started by hminky, Jul 25, 2007.

  1. hminky

    hminky Member

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  2. Greg Elems

    Greg Elems Member

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    Harold,
    My old AM GP's have the spring drive. Did you use new drive lines or did yours come that way?

    Greg
  3. hminky

    hminky Member

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    The new ones have the universals. Micromark sells the old Hobbytown driveshaft/universal system that is great. The spring drive isn't very good.

    Harold
  4. Greg Elems

    Greg Elems Member

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    Tell me about it. :D Adequate at best. I'll have to look into the Hobbytown driveshaft. I have 6 to replace. With that new motor, flywheels aren't needed?

    Thanks,
    Greg
  5. hminky

    hminky Member

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    I haven't been impressed with the American Models choice of motor. I guess it is adequate for the "Flyer" guys. Micromark has a can motor on sale that would really work well.

    With the new skewed armatures, flywheels only add weight. Flywheels improved the old dreadful Bluebox 3 pole armature motor. I have never had a model run worse after getting rid of the flywheels if it had a skewed armature.

    Harold
  6. Greg Elems

    Greg Elems Member

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    That's what I figured. Those old blue box units did have a rough running motor without the fly wheels. AM's market is 80% Flyer compatable with the scale people along for the ride. Thanks again for the tips on the drive shaft and so on.

    Cheers,
    Greg