Louis,
All of the previous S-4's were built at Baldwin as complete locomotives nos. 3000 to 3011 in 1930. In addition to no. 3012, West Burlington also built no. 4001 in 1938. It also had a Baldwin built boiler as did all of the West Burlington constructed O-5's nos. 5608 - 5635. Possibly, West Burlington's boiler shop wasn't capable of handling a boiler of that size or maybe it was more economical to purchase from Baldwin. The two S4s and the 28 O-5's built by West Burlington were all basically kits assembled from components supplied by other manufacturers. West Burlington manufactured cabs, tender shells, boiler jackets, and other detail accessories.
Bill Barber Gravois Mills, MO
Wed Jan 29, 2014 3:13 pm (PST) . Posted by:Rupert - Try researching:
Extra Order 6675
and see what you can find out. Much appreciate you taking the time to do
this.
If it's any help, the roster in the back of the Corbin/Kerka book on page
285 shows what I interpret as Extra Order 5356-35 for Class S-4 No. 3012
whose boiler was fabricated by Baldwin in 1935.
Do you or anyone else on this List know why the Q opted for a Baldwin
boiler for the 3012 after having constructed the others themselves at West
Burlington for preceding S-4 locomotives?
The Q must've been happy with quality and price of the out-sourced boiler
as they went back two years later in 1937 to Baldwin for the series of
O-5-A boilers.
Perhaps, the S-4 boiler was a "try out" for Baldwin since the O-5-A design
work was well under way by that time. Evidently, Baldwin could build the
boilers faster and for less money than the Q could.
Always enjoyable to speculate at this late date.
Louis Zadnichek II
Fairhope, AL
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