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(erielack) re; Tonnage Ratings

To List;In re-reading John Boehner's "E-L Through Passenger Service" book, on page 18, 19, and 28, the author describes tonnage ratings for E-8's:

pg. 18 Millburn - Summit             = 600 tons per unit

pg. 19 Scranton - Clarks Summit = 580 tons per unit

pg. 28 Scranton - Lehigh             = 1160 (2 units); same as pg 19.

Does anyone have, or know, what the Tonnage Ratings were, or are, for Other Diesle's? on what % grades?

I am trying to compare with DL&W steam, those ratings are in a 1940 emp. timetable I have, by classes, in "M's" which are units of 1000 LB.s, also used by the Southern Pacific, among others.

I am aware of how train resistance is calculated for grades and curvatures, and how Tractive Efforts are derived; there are several different formula's,

Thank Goodness for Calculators, my K&E Slide Rule has been gathering dust since 1960!

73's, Charlie Gerow


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