Rhenish 2-4-0 Locomotives in Germany

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 9950)

Data from "Borsig's Express Locomotive," Van Norstrand's Eclectic Engineering Magazine, Volume 1 (1869), pp. 665-666.

This set of locomotives was considered an express-engine design and was sufficiently successful to merit a second order of one dozen in December 1868. The author of the item noted that the drivers were equalized while the leading axle had a transverse compensating beam linking the front-spring ends of the springs. This achieved the desired three-point suspension.

In addition to a raised boiler over the firebox for more steaming space as well as increasing weight on the trailing coupled axle, the class sported a dome just behind the stack.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID9950
Number in Class22
Road Numbers
Number Built22
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.17 / 2.50
Engine Wheelbase (ft / m)13.50 / 4.10
Ratio of driving wheelbase to overall engine wheelbase 0.61
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)26,208 / 11,888
Weight on Drivers (lbs / kg)51,520 / 23,369
Engine Weight (lbs / kg)75,488 / 34,241
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)43 / 21.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)66 / 1675
Boiler Pressure (psi / kPa)130.50 / 9
High Pressure Cylinders (dia x stroke) (in / mm)16" x 22" / 405x560
Tractive Effort (lbs / kg)9466 / 4293.71
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.44
Heating Ability
Tubes (number - dia) (in / mm)171 - 1.88" / 48
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.12 / 3.39
Firebox Area (sq ft / m2)69 / 6.41
Grate Area (sq ft / m2)
Evaporative Heating Surface (sq ft / m2)999 / 92.84
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)999 / 92.84
Evaporative Heating Surface/Cylinder Volume195.13
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation
Same as above plus superheater percentage
Same as above but substitute firebox area for grate area9005
Power L13768
Power MT322.48

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