Baldwin Class System |
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first
number = Total no. of wheels (lead, driver, & trailing wheels) |
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second
number = locomotive size, based on diameter of the cyliners |
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Fraction
after the second number = either information on wheel arraingment or
indicates a larger cylinder size for an exsisiting class |
Letter =
wheel arraingment |
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The class
may be followed by a number, indicating the consecutive number of the loco built to this class in order of construction. |
The class
is sometimes followed by a plan number. |
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Cylinder
size |
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8 = 7" diamiter |
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10 1/2 = 8" diamiter |
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A cylinder
size show as a fraction is a compound locomotive, indicating diamiter of the
high and low preasure cylinders respectivly |
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A cylinder
size which includes a fraction means |
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1/4 indicates the truck(s) are
placed at both ends of the locomotive |
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1/3 indicates the truck is placed at
the rear of the locomotive |
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1/2 indicates a larger
cylinder size |
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Letter code |
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A |
Special class of high speed locos
with one pair of driving wheels and rack locomotives |
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B |
one pair of driving wheels |
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C |
two pair of driving wheels |
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D |
three pair of driving wheels |
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E |
four pair of driving wheels |
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F |
five pair of driving wheels |
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So, |
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4-x-c |
0-4-0 |
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6-x-c |
2/4/2000 |
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