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Re: [Z_Scale] Re: Hallo and an introduction.

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  • Kevin Brady
    Hi Mark,all, Most of the layout will be well under 3%.It will only be at the very top of the mountain station where it will hit 4% and again it will only be a
    Message 1 of 13 , Jun 28, 2011
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      Hi Mark,all,
      Most of the layout will be well under 3%.It will only be at
      the very top of the mountain station where it will hit 4% and again it will
      only be a small two car rail bus that will going there.Thanks for your
      advise.
      Folks,this is a great group!

      Best,Kev

      On Mon, Jun 27, 2011 at 9:07 PM, mark2playz <mark.markham@...>wrote:

      > **
      >
      >
      > Kevin,
      > I built a layout with a 4% grade a number of years ago and I would
      > discourgae it. The problem is that I'd end up with runway cars that would
      > derail at the bottom of the grade.
      > Mark
      >
      >
      > --- In z_scale@yahoogroups.com, Kevin Brady <kbvrod@...> wrote:
      > >
      > > Hi all,
      > > Please let me say again,thanks for the welcoming and the excellent
      > > advise!
      > >
      > > A reminder,this is not my layout,I am building it for someone else.The
      > theme
      > > > of is a Bavarian(Germany) layout with the centerpiece Faller's King
      > Lugwig's
      > > > castle.If and when the owner/mods allow it I will upload the track
      > plan.The
      > > > double track dog-bone will feature fully operational catenary,which
      > makes
      > > > the clearances higher.
      > > >
      > > Dom,the 4% will only be at the very top of an also planned mountain,and
      > only
      > > a small rail bus,will make that journey.The incline will start before
      > that,I
      > > know hard to envision it without the track plan!
      > >
      > > Best to all,Kev
      > >
      > > >
      > > >
      > > > Kevin, speaking of your incline, I read you want to rate it to 4%. In
      > my
      > > > opinion it's way too much, even if it depends on what you want to run
      > on it.
      > > > 2% is the recommended value for most types of exploitation, including
      > long
      > > > and heavy trains. You can accept 3% provided your trains are relatively
      > > > short, say 20-25 cars maxi and provided you have enough motive power.
      > But
      > > > keep in mind that you have to take into account the layout's curvature
      > as
      > > > well. The steeper the grade is, the broader the associated curve must
      > be
      > > > (myself I run 20-car trains with 3 MTL Geeps or SD40s on 3% slopes
      > > > associated with 14"/35cm radius curves). But 4% slopes seem definitly
      > too
      > > > much. Unless you run very short trains with MU'ed locos, which is not
      > very
      > > > prototypical.
      > > >
      > > > Dom
      > > >
      > > >
      > > >
      > >
      > >
      > >
      > > --
      > > Dr. Dirt's Weathering Service
      > >
      > >
      > > [Non-text portions of this message have been removed]
      > >
      >
      >
      >



      --
      Dr. Dirt's Weathering Service


      [Non-text portions of this message have been removed]
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