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 / m)||14 / 4.27|
|Engine Wheelbase (ft / m)||40.58 / 12.37|
|Ratio of driving wheelbase to overall engine wheebase||0.34|
|Overall Wheelbase (engine & tender) (ft / m)||75.46 / 23|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)||65,570 / 29,742|
|Weight on Drivers (lbs / kg)||196,390 / 89,081|
|Engine Weight (lbs / kg)||374,680 / 169,952|
|Tender Loaded Weight (lbs / kg)||208,000 / 94,347|
|Total Engine and Tender Weight (lbs / kg)||582,680 / 264,299|
|Tender Water Capacity (gals / ML)||12,000 / 45.45|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||16 / 14.50|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||109 / 54.50|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||80 / 2032|
|Boiler Pressure (psi / kPa)||220.50 / 15.20|
|High Pressure Cylinders (dia x stroke) (in / mm)||26" x 28" / 660x711|
|Tractive Effort (lbs / kg)||44,345 / 20114.58|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.43|
|Firebox Area (sq ft / m2)||341 / 31.69|
|Grate Area (sq ft / m2)||71 / 6.60|
|Evaporative Heating Surface (sq ft / m2)||4225 / 392.66|
|Superheating Surface (sq ft / m2)||1051 / 97.68|
|Combined Heating Surface (sq ft / m2)||5276 / 490.34|
|Evaporative Heating Surface/Cylinder Volume||245.55|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||15,656|
|Same as above plus superheater percentage||18,787|
|Same as above but substitute firebox area for grate area||90,229|