The two small Moguls Baldwin built for the MRR had different tube counts: the 193 in the specifications refers to 2950; the other locomotive - 2951 -had 211 tubes.
Apparently too small to keep even for branch-line service, 2950 was scrapped in October 1925, 2951 in December 1927.
See Locobase 11466 for information about this rail line. Locobase 8131 shows some Louisville & Nashville F-8 moguls delivered by Rogers in 1906 that appear to have been very close in size to the CS engines, but were credited with much higher weights. The F-8s
deployed 1,583 sq ft of heating surface (including the firebox area), which suggests a figure of perhaps 1,600 sq ft for these engines.
As delivered, the CS locomotives included equipment from the following suppliers:
Westinghouse air-brakes
Midvale steel axles
Cook automatic bell ringers
Keasby & Mattison sectional magnesia boiler lagging
Simplex bolsters and brake-beams
American Brake-Shoe & Foundry Co.'s brake-shoes
Washburn pilot and Tower tender couplers
Elvlns driving box lubricators
U. S. headlights
Nathan injectors
Magnus metal journal bearings
Symington journal boxes
U. S. piston and valve rod packings
Ashton safety valves
Leach sanding devices
Nathan bull's-eye- sight-feed lubricators
Pittsburg Spring & Steel Co.'s springs
Crosby steam gages
Midvale driving and truck wheel tires.
| Specifications | ||
|---|---|---|
| Class | 102 / M1 | M1d |
| Locobase ID | 9887 | 11465 |
| Railroad | Montana RR (CMStP&P) | Chicago Southern (CMStP&P) |
| Whyte | 2-6-0 | 2-6-0 |
| Road Numbers | 102-103 | 2958-2964 |
| Gauge | Std | Std |
| Builder | Burnham, Williams & Co | Alco-Rogers |
| Year | 1905 | 1905 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase | 15' | |
| Engine Wheelbase | 24.50' | |
| Ratio of driving wheelbase to overall engine wheebase | 0.61 | |
| Overall Wheelbase (engine & tender) | 45.79' | |
| Axle Loading (Maximum Weight per Axle) | ||
| Weight on Drivers | 94300 lbs | 95000 lbs |
| Engine Weight | 113000 lbs | 120000 lbs |
| Tender Light Weight | 66100 lbs | |
| Total Engine and Tender Weight | 179100 lbs | 272600 lbs |
| Tender Water Capacity | 3800 gals | 4000 gals |
| Tender Fuel Capacity (oil/coal) | 10 tons | 8 tons |
| Minimum weight per yard of rail on which locomotive could run | 52 lb rail | 53 lb rail |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter | 63" | 52" |
| Boiler Pressure | 190 psi | 160 psi |
| Cylinders (dia x stroke) | 18" x 24" | 20" x 24" |
| Tractive Effort | 19934 lbs | 25108 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.73 | 3.78 |
| Heating Ability | ||
| Firebox Area | 128 sq. ft | |
| Grate Area | 24.50 sq. ft | 22 sq. ft |
| Evaporative Heating Surface | 1234 | |
| Superheating Surface | ||
| Combined Heating Surface | 1234 | 0 |
| Evaporative Heating Surface/Cylinder Volume | 174.58 | |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 4655 | 3520 |
| Same as above plus superheater percentage | 4655 | 3520 |
| Same as above but substitute firebox area for grate area | 24320 | 0 |
| Power L1 | 5289 | 0 |
| Power MT | 370.95 | 0 |
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