Tonnage Ratings and Weather Reductions for Locomotives
NW Mailing List
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Sat Dec 15 20:36:30 EST 2018
By time-table instructions train tonnage in the steam era was reduced as ambient temperatures fell. Reductions were as much as 25% at temperatures below 0 degrees F (Rating G).
Were there multiple reasons for this reduction? Was the primary reason the increased rolling resistance of cars with friction bearings? Were other factors involved?
Thanks, John Garner, Newport VA
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