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untitled MPSM (Modern Prototypical Scale Modeling)
S Scale layouts set in the last 20 years (1978-1998)
 
 
Prototype to Proto:64 Curve Relationships
based on "Trackwork Handbook" from Paul Mallery
Degree of Curve Radius in Actual Feet Proto:64 Radius in Inches
1 5730 1074.375
2 2865 537.1875
3 1910 358.125
4 1433 268.6875
5 1146 214.875
6 955 179.0625
7 819 153.5625
8 717 134.4375
9 637 119.4375
10 574 107.625
11 522 97.875
12 478 89.625
13 442 82.875
14 410 76.875
15 383 71.8125
16 359 67.3125
17 338 63.375
18 320 60
19 303 56.8125
20 288 54

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