Antelope Valley Model Railroad Club
Scale Weight Calculators

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Formula: 1-ounce plus 1/2-ounce for each inch of car length.
HO Scale, 1:87
Prototype Length to Model Weight
Prototype Length (in feet)
Enter feet
Model Weight (in ounces)
-5% Recommended +10%
HO Scale, 1:87
   Model Length to Model Weight   
Model Length (in inches)
Enter inches
Model Weight (in ounces)
-5% Recommended +10%
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