LS & I 1, 2, & 4 went to the Marquette & Southeastern in 1905 as their 35,33, & 34, respectively. The other 3 were renumbered twice by the LS & I before being sold for scrap in 1934.
This class came from Baldwin as a batch. The trio exerted hefty tractive efforts through a large cylinder volume fed by sizable 14" (356 mm) piston valves) from a very large boiler. The firebox heating surface included 29 sq ft (2..69 sq m) in four arch tubes. Its relatively high axle loading reflects a 1909 LS&I program to relay all track with 80 lb/yard (40 kg/metre) rail. Minimum curve radius was a relatively gentle 5 deg and maximum grade was a mild 1.6%.
Boiler pressure later rose to 200 psi with a commensurate tractive effort increase to 60,484 lb (27, 435 kg). The 35 was later fitted with a tender booster.
After a long career with the LS & I, the railroad sold all three to the Marquette & Huron Mountain tourist railroad that operated on the recently abandoned Big Bay branch line. 34-35 went in July 1963, 32 in December 1963.
34 ultimately wound up on the Western Maryland Scenic Railroad as its 734 and 35 was adopted by the Illinois Railway Museum.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Lake Superior & Ishpeming||Lake Superior & Ishpeming|
|Number in Class||6||3|
|Road Numbers||1-6||18-20/32, 34-35|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.66||0.62|
|Overall Wheelbase (engine & tender)||52.85'||60.96'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||132800 lbs||238000 lbs|
|Engine Weight||147600 lbs||268000 lbs|
|Tender Light Weight||76200 lbs||167000 lbs|
|Total Engine and Tender Weight||223800 lbs||435000 lbs|
|Tender Water Capacity||4000 gals||8500 gals|
|Tender Fuel Capacity (oil/coal)||13 tons|
|Minimum weight of rail (calculated)||55 lb/yard||99 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||180 psi||185 psi|
|High Pressure Cylinders (dia x stroke)||20" x 28"||26" x 30"|
|Low Pressure Cylinders (dia x stroke)||31" x 28" (2)|
|Tractive Effort||43213 lbs||55948 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.07||4.25|
|Firebox Area||148.60 sq. ft||245.20 sq. ft|
|Grate Area||31.78 sq. ft||58.70 sq. ft|
|Evaporative Heating Surface||2198 sq. ft||3643 sq. ft|
|Superheating Surface||844 sq. ft|
|Combined Heating Surface||2198 sq. ft||4487 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||215.89||197.61|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||5720||10860|
|Same as above plus superheater percentage||5720||12923|
|Same as above but substitute firebox area for grate area||26748||53981|