Analysis


Voltage-drop across Foam-spline

Plot indicates the voltage drop along 9ft track relative to the near position (0 ft). As the position shifts farther, more current flows through the DCC bus than the rail. Peak of 0.11V is near 5 ft
  • 18g (6.4mΩ) DCC bus
  • 22g (16.1 mΩ) feeder
  • 26g (40.8 mΩ) code 83 nickle-silver rail

Max voltage drop of single-ended bus: near-end powered near supply and far-end powered from equal length 18g bus:

  • 25' - 0.30 V
  • 35' - 0.42 V

Yard Ladder Dimensions using Atlas #4 Turnout

The diagram shows that track spacing is ~1.9" and eight tracks can fit within 13.10".


Masonite/foam spline around Stove


Updated Turnout Requirements for New Shelf Design

track requirements for shelf9 and corner

lengths              3' flex track
    shelf9  114 ft      38
    corner   41 ft      14
            155         52     2 boxes

            563  562     561   562
turnouts    #6L  #6R     #4L   #4R
              1    1       1     1    4 mahanoy plane

              1    4       1     2    8 yard arrival
            < 2    3       1     2    8 yard arrival >

              _    _       3     2    5 yard ladder - 6 tracks
           (  _    _       3     4    7 yard ladder - 8 tracks )

              1    _       _     _    1 engine terminal
              1    1       4     1    7 girardville
            ---------------------------------------
              4    6       9     6   27 total  (amended)

              4    6       3     6      need
             +1    _      +6     _

yard tracks
    1 - girardville
    2 - mahanoy plane
    3 - shamokin
    4 - mahanoy city
    5 - maizeville
    6 - gilberton
    7 -
    8 -

Evaluate # cars spotted and required track lengths

current car inventory: (2025 Oct)
      2  Reefer
      1  Explosive
      1  Livestock
      2  Flatcar
      1  Tank
      1  Gondola
      3  Hopper
     28  Box
     39  Total

Spots:
  Spots  Allot Len(in)
      9    4.2     22  Gilberton
      5    2.3     11  Maizeville
      6    2.8     16  Mahanoy City
      8    3.7     22  Giradville
     28   13.0  Total (46%)

                   71  staging (13 cars)

track capacity:
   55   72   80   84   87   92  inches
    9   13   14   15   15   16  cars

Benchwork around Stove