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Milwaukee F Class Locomotives By Bill Wilkerson Soft over
Milwaukee F Class Locomotives By Bill Wilkerson
Softcover 44 pages
CONTENTS
The Numbers game - Original Pacific Class - The F2 Locomotive - Standard Designs - Operating F 5s - Stokers - F6 Steam Locomotives - The way I felt about F6 Locomotives - Working on F6s - F7 Locomotives - Fastest ride on an F6
MILWAUKEE "F" CLASSSTEAM LOCOMOTIVES
Until 1883 when the Milwaukee bought thirty locomotives of the 4-6-0 wheel arrangement from Rogers Locomotive Com, almost all the Milwaukee freight and passenger locomotives were the Standard 4type and did not need or use class des.
As they purchased more powerful loof different wheel arrangements, they needed a method to identify the type locomotives. My records indicate that class designation by letters was established after March 1900 because the three 4-6-2 type cross compounds built in 1893 were not listed as F class when sold in March 1900. The lone Fl class was the 4-6-0 built by Schenectady in 1889 and converted to a 4-6-2 by the Milwaukee.
If the Milwaukee class designation "F" stood for "FAST," they all lived up to their designation.
There were seven different "F" class locomotives, totaling 190 locomotives. By far the largest majority were the 160 DeVoy designed Pacific type 4-6-2 wheel arrange. They were designated F3, F4 and F5 and were all built between January 1910 and June 1912.
The three classes were exactly the same locomotives with the exception of the size of the driving wheels, pilot wheels and cylinders. The boilers, fireboxes, frames, cabs and tenders were all interchangeable. The fireboxes were all 65 inches wide and 108 inches long with 48.8 square feet of grate area. The boiler diameter was 72 inches at the first course (behind the smoke box) and 83 inches at the steam dome. The F3's had 79-inch diameter driving wheels and 36-inch pilot wheels. The F4 had 69-inch driving wheels and the F5 had 73-inch driving wheels both with 33-inch pilot wheels. The F3 and F4 had 23"x28" cylinders and the F5 had 25" x 28" cylinders. The biggest difference was that the seventy class F5 locomowere built in 1912 with the newly developed superheated boilers. This gave them 43,120 pounds of tractive effort comto 31,990 pounds for the F3's. All the locomotives car160,000 pounds on their driving wheels and had 200 pounds per square inch of boiler pressure.
There were seventy class F3 locomotives built by the American Locomotive Company in 1910. The Milwaukee shops in Milwaukee, Wisconsin built 25 class F4 locomotives in 1910 for mountain passenger service on its' subsidiary, the Chicago, Milwaukee and Puget Sound Railway. This was the newly completed 1400-mile extension to Puget Sound in Washing. The Milwaukee shops built fifteen F5 locomotives in 1912 with 69-inch driving wheels. They were basically upgraded F4's but with superheated boil
ers. American Locomotives' Brooks Works built fifty F5's in 1912, with 73-inch driving wheels. All the locomotives were 78'-5 3/4" overall length with the engine wheelbase be35.-7". The rigid driving wheel base was 14'-0" regardof the size of the driving wheels. The only difference was
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