--- In [email protected], "Thomas Stoltz" <[EMAIL PROTECTED]> wrote:
>
> Well, I hope this is the answer we've all been waiting for....
>
Well, I really don't think so. You see, for the scale of 1/64,
commonly known as S scale, that fraction only works for linear
dimensions. Since the weight of an object is a function of it's
volume times the density of the material, the proper multiplier is not
1/64. The correct multiplier for S scale volume is 1/64 x 1/64 x 1/64
or o.ooooo3814697265625. So if a full size boxcar weighs in at say
25,000 lbs. (as an example using round figures) an S scale boxcar of
the same material built to true scale in all dimensions including
thickness would weigh 25,000 x 16 x 0.000003814697265625, or
1.52587890625 ounces. A boxcar with a load of 75 ton would weigh
perhaps 25,000 lb + 150,000 lb for a total of 175,000 lb? x 16 x
0.00003814697265625 = 10.68 ounces.
So the weight specifications proposed by the NMRA are not outside the
norm for scaled mass. The truly scale modeler should however scale
the weight of his cars to this formula, and add the appropriate weight
for loaded cars, while leaving empty cars "light". He should also use
scale proportioned springs on his trucks, use scale trackwork in all
facets including curvature, use scale tolerances in wheel bearings,
and use scale powered motive power. ;-)
Darrell
I'm going as "scale" as my eyesight allows. Or my fingers. Or my
pocketbook. Oh *#+/!%, I'm just doing as well as I can.
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