These were originally built as 0-4-0ST saddle-tank locomotives.
See Locobase 5423 for a more general discussion. The boiler pressure is an estimate as the diagrams do not give the figure. A departure from the usual Forney formula in having only one trailing truck and in placing the firebox over the rear axle.
See Locobase 5423 for a more general discussion. The boiler pressure is an estimate as the diagrams do not give the figure. These may be the class that was rebuilt by Rome from earlier Baldwin engines. The first was delivered in May, the last in August.
After the Manhattan was electrified, this class was dispersed all over the world.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Manhattan Railway Company||Manhattan Railway Company|
|Number in Class||20||25|
|Road Numbers||26-35, 46-55|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.49|
|Overall Wheelbase (engine & tender)||12.17'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||27500 lbs||35050 lbs|
|Engine Weight||35500 lbs||43450 lbs|
|Tender Light Weight|
|Total Engine and Tender Weight||35500 lbs||43450 lbs|
|Tender Water Capacity||345 gals||635 gals|
|Tender Fuel Capacity (oil/coal)||0.9 tons||0.5 tons|
|Minimum weight of rail (calculated)||23 lb/yard||29 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||150 psi||150 psi|
|Cylinders (dia x stroke)||11" x 14"||11" x 16"|
|Tractive Effort||5684 lbs||5877 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.84||5.96|
|Firebox Area||44.40 sq. ft||49.20 sq. ft|
|Grate Area||13 sq. ft||11.15 sq. ft|
|Evaporative Heating Surface||241 sq. ft||453 sq. ft|
|Combined Heating Surface||241 sq. ft||453 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||156.50||257.40|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||1950||1673|
|Same as above plus superheater percentage||1950||1673|
|Same as above but substitute firebox area for grate area||6660||7380|