Here is a related post from another Yahoo List. Just for maximum education
purposes.
Cheers....Ed L.
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I'd be careful about jettisoning NMRA weight standards. Can you run lighter?
It depends. Let me give an example from our club layout (HO). The layout has
a short hidden helix, approx 600 deg, 2% grade, r=34" (our minimum on
visible track is r=36"). Operation up grade with 14' trains was not a
problem. We tried to run a much longer train (about 24' ) and it
stringlined. We ran the same train with distributed power (2/3 back in the
train) with no problem. All cars were weighted at minimum to NMRA standards.
So it depends on many factors: grades, curves, length of train,
superelevation of curves, pusher opration etc. The standards were
established for a reason: compliance will give reliable operation on most
(not all) layout situations, and our club test illustrates this. If your
layout tolerates lighter equipment due to easy grades and wide-radius
curves, you can get away with it. But consider the possibilities of some day
building a new layout with mountain grades, or running your equipment on a
club or friend's layout whose profile may be less forgiving. For most cars
it is very difficult to add weight later. If it works for you, go for it,
but IMHO most modelers should continue to observe the weight standards until
the NMRA sees fit to revise them.
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