Qty. | Road Numbers | 2nd Railroad | Year Sold | Year. Built | Builder | Notes |
---|---|---|---|---|---|---|
3 | 602, 608, 613 | Algoma Central | 1942 | 1915 | ALCO | Sold to the Algoma Central in 1942. AC numbers 80-82. All scrapped between 1951 and 1953. |
1 | 618 | Algoma Central | 1942 | 1916 | ALCO | Sold to the Algoma Central in 1942. AC number 83 scrapped by 1953. |
1 | 605 | Algoma Central | 1942 | 1915 | ALCO | Sold to the Algoma Central in 1942. AC number 84 scrapped by 1953. |
1 | 617 | Algoma Central | 1943 | 1916 | ALCO | Sold to the Algoma Central in 1943. AC number 85 scrapped by 1953. |
2 | 621, 624 | Algoma Central | 1943 | 1920 | ALCO | Sold to the Algoma Central in 1943. AC numbers 86-87 scrapped by 1953. |
Data from table in May 1916 issue of Railway Mechanical Engineer (RME). See also M&StL Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Several Alco facilities supplied engines with Schenectady producing works numbers 54985-54999 in February 1915..
These were relatively lightweight Mikes that nevertheless gave many years of service to the M&StL All 35 had the same power dimensions, 14" (356 mm) piston valves, identical heating surface areas, and wheelbases.
The changes between the first 20 and the later 15 were relatively minor. In the first 20, reverse gear was supplied by Ragonnet, Alco built the engine's trailing truck, and the tender rode on arch-bar trucks. See Locobase 16216 for the 1921 batch by Brooks.
When they were rebuilt by Lucius Sprague in the late 1930s, the class received enlarged sand boxes, increased coal and water capacities,stokers, and MSL added a variety of auxiliaries. Some (602-603, 606-607, 611, 614-616, 619) of this earlier class were fitted with Nicholson thermic syphons. Wilson or Worthington feed water heaters went into 602, 606, 611, 614, and 619.
Data from M&StL 1934 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. (Thanks to Stephen Low for his 16 July 2016 email reporting the higher boiler pressure settings.) Works numbers were 62562-62576 in January 1921.
These were relatively lightweight Mikes that nevertheless gave many years of service to the M&StL All 35 had the same power dimensions, 14" (356 mm) piston valves, identical heating surface areas, and wheelbases.
The changes between the first 20 (Locobase 1416) and this later 15 were relatively minor. The 1921 engines used Alco's reverse gear, Commonwealth's trailing truck, and the tender trucks were equalized. Adhesion weight increaseed rose by 7,300 lb (3,311 kg) to 196,500 lb (89,131 kg).
When they were rebuilt by Lucius Sprague in 1939-1942, all were fitted with Franklin stokers and trailing-truck boosters, Baldwin disc driver centers, Nicholson thermic syphons, and Worthington feedwater heaters. The sandboxes were enlarged and tender coal and water capacity increased. ,Two even received stainless steel boiler jackets, and valences under the running boards.
The Tootin' Looie began retiring M-1s in October 1947 (627) and completed its deletion in June 1951 (632).
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | M1/M1-46 | M1/M1-46 |
Locobase ID | 1416 | 16216 |
Railroad | Minneapolis & St Louis (MSL) | Minneapolis & St Louis (MSL) |
Country | USA | USA |
Whyte | 2-8-2 | 2-8-2 |
Number in Class | 20 | 15 |
Road Numbers | 600-619 | 620-634 |
Gauge | Std | Std |
Number Built | 20 | 15 |
Builder | Alco-Schenectady | Alco-Brooks |
Year | 1915 | 1921 |
Valve Gear | Baker | Baker |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 15.75 / 4.80 | 15.75 / 4.80 |
Engine Wheelbase (ft / m) | 33.58 / 10.24 | 33.58 / 10.24 |
Ratio of driving wheelbase to overall engine wheelbase | 0.47 | 0.47 |
Overall Wheelbase (engine & tender) (ft / m) | 63.56 / 19.37 | 63.50 / 19.35 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 189,500 / 85,956 | 186,500 / 84,595 |
Engine Weight (lbs / kg) | 259,900 / 117,889 | 252,500 / 114,532 |
Tender Loaded Weight (lbs / kg) | 156,000 / 70,760 | 165,500 / 75,070 |
Total Engine and Tender Weight (lbs / kg) | 415,900 / 188,649 | 418,000 / 189,602 |
Tender Water Capacity (gals / ML) | 10,200 / 38.64 | 8500 / 32.20 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 17.50 / 16 | 11.75 / 11 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 79 / 39.50 | 78 / 39 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 59 / 1499 | 59 / 1499 |
Boiler Pressure (psi / kPa) | 185 / 1280 | 200 / 1280 |
High Pressure Cylinders (dia x stroke) (in / mm) | 24" x 30" / 610x762 | 24" x 30" / 610x762 |
Tractive Effort (lbs / kg) | 46,056 / 20890.68 | 49,790 / 22584.39 |
Booster (lbs) | 11,510 | |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.11 | 3.75 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 170 - 2.25" / 57 | 170 - 2.25" / 57 |
Flues (number - dia) (in / mm) | 32 - 5.5" / 140 | 32 - 5.5" / 140 |
Flue/Tube length (ft / m) | 15.75 / 4.80 | 15.75 / 4.80 |
Firebox Area (sq ft / m2) | 231 / 21.46 | 231 / 21.46 |
Grate Area (sq ft / m2) | 55 / 5.11 | 55 / 5.11 |
Evaporative Heating Surface (sq ft / m2) | 2995 / 278.24 | 2995 / 278.24 |
Superheating Surface (sq ft / m2) | 706 / 65.59 | 706 / 65.59 |
Combined Heating Surface (sq ft / m2) | 3701 / 343.83 | 3701 / 343.83 |
Evaporative Heating Surface/Cylinder Volume | 190.64 | 190.64 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 10,175 | 11,000 |
Same as above plus superheater percentage | 12,108 | 13,090 |
Same as above but substitute firebox area for grate area | 50,855 | 54,978 |
Power L1 | 12,163 | 13,150 |
Power MT | 566.01 | 621.79 |