Question: U-Shaped Curves/Dog Bones

Discussion in 'General' started by trainchaser007 (Brandon Adams RIP 9/22/2017), Sep 28, 2016.

  1. trainchaser007 (Brandon Adams RIP 9/22/2017)

    trainchaser007 (Brandon Adams RIP 9/22/2017) Passed away September 22, 2017

    Do you think an HO scale train up to 15 ft. long could handle this 22" radius curve without string lining if the cars at the rear weren't too heavy? Keep in mind that there's a 9" straight in the center of the S curve. Layout 02.GIF
  2. gstout

    gstout Member Supporter

    Should be okay if the cars are all fairly short (40') and are all weighted about the same.

  3. klrwhizkid

    klrwhizkid Administrator Staff Member Administrator Supporter

    I would add to Greg's reply that Intermountain wheelsets on the trucks to reduce rolling friction at the axles would not hurt. If the cars are 50' and greater, the Intermountain wheelsets would be necessary in addition to equal weighting.
  4. Mayhem

    Mayhem Member

    Make sure all trucks can turn that radius and use metal wheel sets.
  5. yardmaster

    yardmaster Administrator Staff Member Administrator Supporter

    Brandon, I'd overlooked this before, but I have a similar configuration at the "staging" end of our layout. I have 24-26" radii on two tracks; while they do not form a "continuous" dogbone - I simply want a muzzle-loading configuration to allow SLSF to run in/out of Olathe, and the same for AT&SF - I've found that with careful track laying, even a heavyweight passenger car will handle the curves at lower speeds. I'm not concerned about appearances or speed, since loop is off-stage.

    Probably doesn't really answer the question, but I think it can be done if space and operational objectives dictate a turn-back like this.

    Best Regards,

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