Prototype Information
The S12 was a 1,200-horsepower (890 kW) diesel-electric locomotive built by Baldwin Lima Hamilton (BLH ) intended for use in yard switching. Utilizing a turbocharged 6-cylinder version of the powerful 606A diesel prime mover, S12s were known for their "lugging" power, despite being temperamental. Like most BLH switchers, the S12 had AAR Type-A switcher trucks in a B-B wheel arrangement. 451 units were built between 1951 and 1956, when BLH left the locomotive market.
Logging companies were known for purchasing used equipment. When it came to dieselization, they took what whas available on the market. Rayonier had three S12's: Nos. 201 & 202 were purchased new from Baldwin Lima Hamilton in July 1956.
No. 203 was originally built for McCloud River Railroad as No. 30, sold to Rayonier in 1963.
The WWSL
One of the WWSL's future modeling projects is the modeling of representative locomotives of the Class 1 and Class 3 (logging) locomotives used in the Montesano Wa. area stored on a display shelf and maybe posed on the WWSL for a vignette photograph.Diagram
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| From the collection of Kevin Kohls |
Engineering
Photographs of No. 203 show a standard Baldwin S12 diagram configuration. Photographs of Rayonier Nos. 201 and 202 show a different S12 configuration. The difference is a box on each side of the hood similar in cross-section to the battery box, that runs nearly the length of the hood. Ahead of the battery box on the LHS there is a 2" pipe that runs up from this to just above the hood doors before entering the hood itself. Another pipe of a larger diameter appears to come out of the top of the hood and rises at an angle, ending just behind the headlight.
Finding the answer to this design change was interesting. Nothing on the internet. I did find the answer in the book Rayonier by James Spencer. He indicates in a photo caption that the boxes are water tanks used as a water supply for 'railwashers' used for lubrication o the many curves prevelent on the Clallam operation.
Who am I to object! This is an interesting configuration and it will be modeled.
Project Process
Paint Scheme:
Black roof down to handrails
yellowbody
black frame
Weathering:
Assumption is the units were painted by the company after their
arrival, and units are in a very well maintained shape.
Louis Marre. Baldwin S-12 as MKT 24 and 34. Railmodel Journal November 1999.
Jerry Britton PRR Baldwin switchers
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Baldwin photos - collection of Chuck Brewster
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