The West Fork Logging #91 vs Kinzua Pine Mills #102 conondrum in the view of a
rivet counter (myself):
The West Fork Logging #91 was a regular 1923 catalog 90 tonner with the since 1925
available option superheat (outside admission) made in March 1928 as cn 1557 with
an open cab. Tractive effort 38880 lbs.
The marketing name "West Coast Special Heisler" was not used until Summer 1928.
So 1557 was not a WCSH!
Heisler included 4 very important technical changes that distinct the real new model
"West Coast Special" from the ones made before:
Enclosed cab,
Superheater with inside admission,
Cylinder diameter enlarged by 1/4 inch,
Gearing changed from 24:12 (2.00:1) to 24:11 (2.18:1).
Which bring the tractive effort to 43600 lbs.
The Kinzua Pine Mills #102 is a real West Coast Special Heisler.
Made December 1929 as cn 1595 90 ton and shipped undecorated in May 1930 to
Heisler dealer Whitney Engineering in Tacoma, WA (that the reason no builder photo
exist).
Sold in 1935 to Whitney Engineering (for accounting reasons) and finally in 1936
to Kinzua Pine Mills Co.
See below a Kinsey photo from just new #91.
And to compare cn 1593 90ton 11/1929 builder photo (identical twin to cn 1595).
P.S. That not connected third truck is the reason that lokie tend to slip so easy, all
the power is distributed via 4 instead of 6 axles.
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