Mixed-traffic Ten-wheelers, this pair donned the Western Maryland herald in 1905 and the road numbers 91-92. As class G-6, they served the WM for another two decades.
91 was retired in December 1924 while the 92 was sold to Maryland Pipe Supply Company in December 1927.
The Iron Range Route was the brainchild of John N Faithorn, says the history, as part of a railroad-car ferry transportation system. Beginning at the two ports of Marinette, Wisc and Menominee, Mich, which lay across the Menominee River from each other, the railroad ran 51 miles (82 km) north to the Minneapolis, St Paul & Sault Ste Marie (Soo Line). Its ferry partner was the Lake Michigan Car Ferry Transportation Company, which George Hilton reports had a "brief and inglorious history" during which three of the four barges operating as car ferries sank. The actual embarkation point was located in Peshtigo, Wisc.
Faithorn persisted with construction beyond the Soo junction to Quinnesec, where a two-mile stage line took passengers to Iron Mountain resort. By 1908, the W&M included 135 route miles (217 km), but began to lose money and mileage from that point on. After the railroad entered bankruptcy in 1914, the road was bought by John Marsch, one of its major bondholders.
It was Marsch who bought the two Ten-wheelers shown in this entry. They were tasked to run on 70 lb/yard (35 kg/metre) rail, take on modest 1% grades, and bend around 15 degrees (radii of 383 feet/117 metres). They were fitted with 10" (254 mm) piston valves for steam admission to the cylinders. "All four Baldwins", says the history, including the larger 4-6-0s described in Locobase 14978, "were equipped with distinctive homemade whistles built by an industrious master mechanic." The new equipment failed to stave off the larger trends then at work undermining most smaller railroads.
When the railroad closed in 1938, the 527 was sold to the Rock Island Southern while the 528 went to metals dealer Hyman Michaels.
A brief history of this northern Michigan common carrier appears in Locobase 14977. This entry concerns the two Ten-wheelers that John Marsch ordered in 1922, apparently to meet demand that the earlier two couldn't match.
The result seems to have been a case of over-reaching, according to the history, which describes the pair as "top heavy". In fact, the 600 derailed on the main line in its first year of operation. The engines were also regarded as "poor steamers", even though they had significantly bigger grates in proportion to their heating surface area.
The design offers a good example of why one should be wary of mere numbers as an indicator of ability. Most of the ratios and percentages are right in line with acceptable practice, yet these engines were failures. Maybe they were simply too heavy for the track.
18 sq ft (1.65 sq m) of arch tubes contributed to the direct heating surface area and steam entered the cylinders through 10" (254 mm) piston valves. Shop-bound most of their W&M careers, the history observes, "The 600's remained as relief engines and were used sparingly, even when tonnage was too high for smaller engines."
When the W&M entered its death throes in 1937, Marsch sold both locomotives in April 1937 to locomotive rebuilder/reseller Birmingham Rail & Locomotive. The BR&L found a North Carolina buyer in 1939 in the Atlantic & East Carolina, which renumbered them 602 and 601. They served the 95-mile (153 km) road until 1952, when both were scrapped.
These must have been near the head of the parade of locomotives that would be fitted with Walschaert (or Walschaert's, but never Walschaerts) outside radial valve gear. Drury (1993) doesn't record this set of five Ten-wheelers that operated on the WM for over 25 years. They were trim-looking mixed-traffic engines with slide valves.
The five were scrapped without any major upgrades beginning with 104 in February 1927 and ending with 103 in September 1935.
|Principal Dimensions by Steve Llanso of Sweat House Media|
|Railroad||West Virginia Central & Pittsburgh (WM)||Wisconsin & Michigan||Wisconsin & Michigan||Western Maryland (WM)|
|Number in Class||2||2||2||5|
|Builder||Burnham, Williams & Co||Baldwin||Baldwin||Burnham, Williams & Co|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||12.33 / 3.76||13.50 / 4.11||13.50 / 4.11||13.50 / 4.11|
|Engine Wheelbase (ft / m)||22.92 / 6.99||24.25 / 7.39||24.42 / 7.44||24.75 / 7.54|
|Ratio of driving wheelbase to overall engine wheebase||0.54||0.56||0.55||0.55|
|Overall Wheelbase (engine & tender) (ft / m)||55.29 / 16.85||56.29 / 17.16||54.62 / 16.65|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)|
|Weight on Drivers (lbs / kg)||114,000 / 51,710||117,000 / 53,070||140,000 / 63,503||130,000 / 58,967|
|Engine Weight (lbs / kg)||149,000 / 67,585||150,500 / 68,266||182,000 / 82,554||165,000 / 74,843|
|Tender Loaded Weight (lbs / kg)||100,000 / 45,359||124,000 / 56,246||142,000 / 64,410|
|Total Engine and Tender Weight (lbs / kg)||249,000 / 112,944||274,500 / 124,512||324,000 / 146,964|
|Tender Water Capacity (gals / ML)||5000 / 18.94||6000 / 22.73||7000 / 26.52||6000 / 22.73|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||10 / 9.10||12 / 10.90||9 / 8.20|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||63 / 31.50||65 / 32.50||78 / 39||72 / 36|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||62 / 1575||62 / 1575||57 / 1448||64 / 1626|
|Boiler Pressure (psi / kPa)||190 / 13.10||180 / 12.40||195 / 13.40||200 / 13.80|
|High Pressure Cylinders (dia x stroke) (in / mm)||19" x 26" / 483x660||20" x 26" / 508x660||21" x 28" / 533x711||22" x 26" / 559x660|
|Tractive Effort (lbs / kg)||24,449 / 11089.89||25,665 / 11641.46||35,907 / 16287.16||33,426 / 15161.80|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.66||4.56||3.90||3.89|
|Firebox Area (sq ft / m2)||171.10 / 15.90||172 / 15.98||186 / 17.28||180 / 16.73|
|Grate Area (sq ft / m2)||35.40 / 3.29||33.60 / 3.12||45.90 / 4.26||35 / 3.25|
|Evaporative Heating Surface (sq ft / m2)||2118 / 196.84||2692 / 250.09||2818 / 261.80||2596 / 241.26|
|Superheating Surface (sq ft / m2)|
|Combined Heating Surface (sq ft / m2)||2118 / 196.84||2692 / 250.09||2818 / 261.80||2596 / 241.26|
|Evaporative Heating Surface/Cylinder Volume||248.24||284.75||251.05||226.94|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||6726||6048||8951||7000|
|Same as above plus superheater percentage||6726||6048||8951||7000|
|Same as above but substitute firebox area for grate area||32,509||30,960||36,270||36,000|