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<p>[quote user="Paul3"]Actually, our HO freight cars are very overweight. A prototype empty 40' steel boxcar can weigh in at around 45,000 lbs. Weight is figured by the cube, so one divides it by the length, width and height, or, IOW, divide it by 87.1 three times, not just once. 45,000 lbs., in HO scale, is just 1.1 oz. Our empty 40' steel boxcars should weigh in at just above 1 oz., if one wants to be scale about it.[/quote]</p> <p>Does that statement not assume that the density of the material in question is identical?</p>
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