The five K-5s used to build these "Hudsons" were bought from the American Locomotive Company in 1925 and were the only three-cylinder 2-8-2s on the Wabash.
Later, in 1946 and 1947, a pair of the two cylinder Class K-5s were also converted into "Hudsons" and were assigned road numbers 705 and 706.
All seven of the Class P-1 "Hudsons" were scrapped in 1956.
The engines were semi-streamlined with long "elephant ears" and given a light blue paint scheme with a broad white stripe along the running boards; the tenders received a similar paint job.
They ran until 1956.
|Specifications by Steve Llanso of Sweat House Media|
|Number in Class||7|
|Locomotive Length and Weight|
|Driver Wheelbase (ft)||14|
|Engine Wheelbase (ft)||40.58|
|Ratio of driving wheelbase to overall engine wheebase||0.34|
|Overall Wheelbase (engine & tender) (ft)||75.46|
|Axle Loading (Maximum Weight per Axle) (lbs)||65,570|
|Weight on Drivers (lbs)||196,390|
|Engine Weight (lbs)||374,680|
|Tender Light Weight (lbs)||208,000|
|Total Engine and Tender Weight (lbs)||582,680|
|Tender Water Capacity (gals)||12,000|
|Tender Fuel Capacity (oil/coal) (gals/tons)||16|
|Minimum weight of rail (calculated) (lb/yd)||109|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in)||80|
|Boiler Pressure (psi)||220|
|High Pressure Cylinders (dia x stroke) (in)||26" x 28"|
|Tractive Effort (lbs)||44,244|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.44|
|Firebox Area (sq ft)||341|
|Grate Area (sq ft)||71|
|Evaporative Heating Surface (sq ft)||4225|
|Superheating Surface (sq ft)||1051|
|Combined Heating Surface (sq ft)||5276|
|Evaporative Heating Surface/Cylinder Volume||245.55|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||15,620|
|Same as above plus superheater percentage||18,744|
|Same as above but substitute firebox area for grate area||90,024|