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.
|Principal Dimensions 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|
|Driver Wheelbase (ft / m)||11.67 / 3.56||15.50 / 4.72||15 / 4.57|
|Engine Wheelbase (ft / m)||21.62 / 6.59||28.96 / 8.83||27.92 / 8.51|
|Ratio of driving wheelbase to overall engine wheebase||0.54||0.54||0.54|
|Overall Wheelbase (engine & tender) (ft / m)||61.50 / 18.75||55.50 / 16.92|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)||52,500 / 23,814|
|Weight on Drivers (lbs / kg)||90,000 / 40,823||155,000 / 70,307||112,000 / 50,802|
|Engine Weight (lbs / kg)||120,000 / 54,431||210,000 / 95,255||160,000 / 72,575|
|Tender Loaded Weight (lbs / kg)||60,000 / 27,216||148,200 / 67,222||135,000 / 61,235|
|Total Engine and Tender Weight (lbs / kg)||180,000 / 81,647||358,200 / 162,477||295,000 / 133,810|
|Tender Water Capacity (gals / ML)||3000 / 11.36||8000 / 30.30||7000 / 26.52|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||13 / 11.80||4000 / 15.20|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||50 / 25||86 / 43||62 / 31|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||62 / 1575||73 / 1854||72 / 1829|
|Boiler Pressure (psi / kPa)||180 / 12.40||200 / 13.80||165 / 11.40|
|High Pressure Cylinders (dia x stroke) (in / mm)||18" x 24" / 457x610||23.5" x 30" / 597x762||22" x 26" / 559x660|
|Tractive Effort (lbs / kg)||19,189 / 8703.99||38,582 / 17500.52||24,513 / 11118.92|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.69||4.02||4.57|
|Firebox Area (sq ft / m2)||132.10 / 12.28||201 / 18.68||163 / 15.14|
|Grate Area (sq ft / m2)||22.80 / 2.12||55 / 5.11||30 / 2.79|
|Evaporative Heating Surface (sq ft / m2)||1539 / 143.03||3370 / 313.20||2248 / 208.84|
|Superheating Surface (sq ft / m2)||530 / 49.26||502 / 46.64|
|Combined Heating Surface (sq ft / m2)||1539 / 143.03||3900 / 362.46||2750 / 255.48|
|Evaporative Heating Surface/Cylinder Volume||217.72||223.77||196.52|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||4104||11,000||4950|
|Same as above plus superheater percentage||4104||12,540||5841|
|Same as above but substitute firebox area for grate area||23,778||45,828||31,736|