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18581Re: [z_scale] Re: Recommended track gradient

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  • de Champeaux Dominique
    Jan 3, 2004
      > Does anyone know of any testing that has been done
      > to determine the
      > optimum number of driving wheels for a given weight?
      The "La Mesa Model railroad club" (which operates HO
      scale Tehachapi Pass in San Diego, CA) says, for its
      maximum grades of 2.2 %, 8 towed axles (ie two cars)
      per driving axle. That leads to 8 cars per BB engine,
      and 12 cars per CC engine.

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