Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 31, p. 188, Volume 32, p. 257. See Locobase 6638 for a short history of the road, including a discussion of the 1914 accident that took 43 lives. Works number was 32180 in November 1907 and 32856 in July 1908.
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 39, p. 5. See Locobase 6638 for a short history of the road, including a discussion of the 1914 accident that took 43 lives. Works number was 37069 in October 1911.
This locomotive was the first of four locomotives ordered as the #1 by Midland Pennsylvania. Before its delivery to the MP, the 1 was resold to the M&N. It was originally to be numbered 21, but had that changed to 23 before its delivery.
It remained on the roster until scrapped in April 1939.
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | 15 | 23 |
Locobase ID | 13267 | 13268 |
Railroad | Missouri & North Arkansas | Missouri & North Arkansas |
Country | USA | USA |
Whyte | 4-4-0 | 4-4-0 |
Number in Class | 2 | 1 |
Road Numbers | 15-16 | 23/17 |
Gauge | Std | Std |
Number Built | 2 | 1 |
Builder | Burnham, Williams & Co | Baldwin |
Year | 1908 | 1911 |
Valve Gear | Stephenson | Stephenson |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 9.08 / 2.77 | 8.50 / 2.59 |
Engine Wheelbase (ft / m) | 23.92 / 7.29 | 22.58 / 6.88 |
Ratio of driving wheelbase to overall engine wheelbase | 0.38 | 0.38 |
Overall Wheelbase (engine & tender) (ft / m) | 46.58 / 14.20 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 73,000 / 33,112 | 76,000 / 34,473 |
Engine Weight (lbs / kg) | 115,000 / 52,163 | 113,000 / 51,256 |
Tender Loaded Weight (lbs / kg) | 80,000 / 36,287 | 80,000 / 36,287 |
Total Engine and Tender Weight (lbs / kg) | 195,000 / 88,450 | 193,000 / 87,543 |
Tender Water Capacity (gals / ML) | 4000 / 15.15 | 4000 / 15.15 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6 / 6 | 6 / 6 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 61 / 30.50 | 63 / 31.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 63 / 1600 | 68 / 1727 |
Boiler Pressure (psi / kPa) | 180 / 1240 | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 | 18" x 24" / 457x610 |
Tractive Effort (lbs / kg) | 18,885 / 8566.10 | 17,496 / 7936.06 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.87 | 4.34 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 246 - 2" / 51 | 267 - 2" / 51 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 11.69 / 3.56 | 11.69 / 3.56 |
Firebox Area (sq ft / m2) | 148.80 / 13.82 | 126.50 / 11.75 |
Grate Area (sq ft / m2) | 18.50 / 1.72 | 26 / 2.42 |
Evaporative Heating Surface (sq ft / m2) | 1643 / 152.64 | 1740 / 161.65 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 1643 / 152.64 | 1740 / 161.65 |
Evaporative Heating Surface/Cylinder Volume | 232.39 | 246.11 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 3330 | 4680 |
Same as above plus superheater percentage | 3330 | 4680 |
Same as above but substitute firebox area for grate area | 26,784 | 22,770 |
Power L1 | 6381 | 6846 |
Power MT | 385.42 | 397.18 |