The Cd'A&S was a short line in eastern Washington-western Idaho that combined with other railroads in 1907 to form the Spokane & Inland Empire. When the S&IE electrified, it sold the 2 to the Spokane, Portland & Seattle as their 156.
The SP&S operated this small, modestly powered, light-footed Ten-wheeler for another 25 years before scrapping it in April 1937.
This was a continuation of the E-14 order then being delivered to the Great Northern (Locobase 8844). The GN and its contentious partner, the Northern Pacific, were stocking the SP & S's motive-power roster. So this set was sent on to the SP & S.
Four were unaltered and scrapped as Ten-wheelers in April and May 1937. The other six were converted to H-1-class Pacifics (see Locobase 8846) and served into the 1950s.
This pair of superheated Ten-wheelers was ordered by the Astoria & Columbia River just before it was taken over by the SP & S. So both were delivered to the successor with the same road numbers and a class D-2 designation.
Both engines operated on the SP & S (most likely on the former A & CR rails) for a long time. 151 was scrapped in February 1948 and 150 in June 1950.
|Specifications by Steve Llanso of Sweat House Media|
|Class||2 / D-5||D-1||D-2|
|Railroad||Coeur d'Alene & Spokane (SP&S)||Spokane, Portland & Seattle||Spokane, Portland & Seattle|
|Number in Class||1||10||2|
|Builder||Burnham, Williams & Co||Baldwin||Baldwin|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.54||0.54||0.54|
|Overall Wheelbase (engine & tender)||61.50'||55.50'|
|Axle Loading (Maximum Weight per Axle)||52500 lbs|
|Weight on Drivers||90000 lbs||155000 lbs||112000 lbs|
|Engine Weight||120000 lbs||210000 lbs||160000 lbs|
|Tender Light Weight||60000 lbs||148200 lbs||135000 lbs|
|Total Engine and Tender Weight||180000 lbs||358200 lbs||295000 lbs|
|Tender Water Capacity||3000 gals||8000 gals||7000 gals|
|Tender Fuel Capacity (oil/coal)||13 tons||4000 gals|
|Minimum weight of rail (calculated)||50 lb/yard||86 lb/yard||62 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||180 psi||200 psi||165 psi|
|Cylinders (dia x stroke)||18" x 24"||23.5" x 30"||22" x 26"|
|Tractive Effort||19189 lbs||38582 lbs||24513 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.69||4.02||4.57|
|Firebox Area||132.10 sq. ft||201 sq. ft||163 sq. ft|
|Grate Area||22.80 sq. ft||55 sq. ft||30 sq. ft|
|Evaporative Heating Surface||1539 sq. ft||3370 sq. ft||2248 sq. ft|
|Superheating Surface||530 sq. ft||502 sq. ft|
|Combined Heating Surface||1539 sq. ft||3900 sq. ft||2750 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||217.72||223.77||196.52|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||4104||11000||4950|
|Same as above plus superheater percentage||4104||12540||5841|
|Same as above but substitute firebox area for grate area||23778||45828||31736|