Factors of Adhesion for the Big Three

nw-mailing-list at nwhs.org nw-mailing-list at nwhs.org
Wed Oct 5 12:36:11 EDT 2005

My reference gave the J's weight on drivers as 494,000, and boiler pressure
as 300 psi.
Also; have to question the starting FA of 3.44 for the Y6b. Usually
associate lower FA value
with high speed passenger locomotives, such as Milwaukee Road's
semi-streamlined 4-4-2
of the mid 1930's. Would expect heavy freight locomotives, such as the Y,
to have FA of
4.00 or higher.

Jerome Crosson
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