Data from "The Locomotive History of the London, Chatham & Dover Ry," The Locomotive Magazine, Vol VII (January 1902), p. 4.
LM's LCDR historian notes that this class was a standard Sharp, Stewart four-coupled passenger design of the 1850s, which included a riveted outside frame, overhanging springs, and dome well forward.
The builder sold some to the Dutch Rhenish Railway. LM does not say how many went to Holland, but six came back in 1861 as what Locobase will term the Gemstone class - Onyx, Emerald, Diamond, Ruby, Amethyst, and Pearl. The demand for greater power prompted the purchase by the LCDR, which illustrates how light the motive power actually was in the early 1860s.
They were later upgraded by William Kirtley; see Locobase 10305.
Data from L Derens"The Dutch Rhenish Railway and Its Locomotives"," The Locomotive Magazine, Volume XXVI [26] (15 July 1920), p. 159. 71-72 in 1869, 73 in 1870, 74-75 in 1871, and 76-77 in 1873.
This septet represented the first passenger tank engines to serve the Dutch Rhenish. Apparently well-suited to the traffic they hauled, the class operated on the DR and its successor Dutch State Railways until 1919.
All of the class was sold into mining service for the Bergenrode company headquartered in Limburg.
Data from L Derens"The Dutch Rhenish Railway and Its Locomotives"," The Locomotive Magazine, Volume XXVI [26] (15 July 1920), p. 159. 81-83 arrived in 1869, 84-85 in 1870.
Based on the earlier 31 class locomotives of 1865 (Locobase 20775), this quintet had larger boilers and grates. Derens noted that the latter four engine (82-85) received new boilers of slightly larger heating surface area (1,045 sq ft/97.08 sq m) pressed to 150 psi (10.34 bar). The higher pressure raised the calculated tractive effort to 10,888 lb (4,939 kg or 48.43 kN).
Data from L Derens"The Dutch Rhenish Railway and Its Locomotives"," The Locomotive Magazine, Volume XXVI [26] (15 July 1920), p. 159. 86-87 arrived in 1870, 88-93 in 1871.
After taking delivery of the five high-drivered Class 12s described in (Locobase 20780), the DR ordered eight more with 6-ft drivers. These had slightly smaller boilers and grates, but more firebox heating surface area.
They later received the conical (inversely tapered) chimneys (stacks) that first appeared on the Class 14 (Locobase 20782).
Data from L Derens"The Dutch Rhenish Railway and Its Locomotives"," The Locomotive Magazine, Volume XXVI [26] (15 September 1920), p. 208. 94-95 delivered in 1877.
Updating the Class 13 design described in Locobase 20781, this class had the same power dimensions except for the boiler pressure, which was set 30 psi (2.07 bar) higher. A slightly bigger boiler and longer grate stretched the wheelbase by 9" (229 mm).
NB: Although the data for the tube heating surface area (937 sq ft/87.05 sq m) reflected measurement from the fire side (inside) diameter, Locobase shows the water side areas based on the tubes' stated external diameters.
The pair introduced the conical (inversely tapered) chimneys (stacks) that Derens wrote contributed to "their smart and handsome outline" that bore "testimony to the good taste of their designers." Another innovation--a movable cone in the blastpipe--met with limited success and was removed.
Data from L Derens"The Dutch Rhenish Railway and Its Locomotives"," The Locomotive Magazine, Volume XXVI [26] (15 Septembetr 1920), p. 208. 178-181 in 1877 and 182-183 in 1878.
The first six passenger tanks on the DR arrived in 1869. When the railway ordered another sextet in 1877, they repeated much of the earlier design. Significant changes included a 30 psi (2.08 bar) increase in boiler pressure, a bigger boiler and firebox, and conical stack replacing the straight chimney.
As late as 1919-1920, three of the class--their road numbers increased by 1,000 to 1178-1180-- still hauled Dutch Railway local passenger. trains
Data from L Derens"The Dutch Rhenish Railway and Its Locomotives"," The Locomotive Magazine, Volume XXVI [26] (15 April 1920), p. 87. 31 arrived in 1865, 32-34 in 1877, and 35-36 completed the set in 1867.
Not to be confused with an 1856 sextet of six-wheelers also numbered 31-36 (Locobase 10304), this class rolled on much taller drivers. Double-framed like many engines of the day, these had only a single plate guarding the motion on the outside. They also introduced the Giffard injector to locomotive service.
Principal Dimensions by Steve Llanso of Middle Run Media | |||||
---|---|---|---|---|---|
Class | Class 1 | Class 11 | Class 12 | Class 13 | Class 14 |
Locobase ID | 10304 | 20779 | 20780 | 20781 | 20782 |
Railroad | Dutch Rhenish | Dutch Rhenish | Dutch Rhenish | Dutch Rhenish | Dutch Rhenish |
Country | Netherlands | Netherlands | Netherlands | Netherlands | Netherlands |
Whyte | 2-4-0 | 2-4-0T | 2-4-0 | 2-4-0 | 2-4-0 |
Number in Class | 7 | 5 | 8 | 2 | |
Road Numbers | 71-77 | 81-85 | 86-93 | 94-95 | |
Gauge | Std | Std | Std | Std | Std |
Number Built | 7 | 5 | 8 | 2 | |
Builder | Sharp, Stewart | Sharp, Stewart | Sharp, Stewart | Sharp, Stewart | Sharp, Stewart |
Year | 1856 | 1869 | 1869 | 1870 | 1877 |
Valve Gear | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson |
Locomotive Length and Weight | |||||
Driver Wheelbase (ft / m) | 7 / 2.13 | 7.70 / 2.35 | 7.50 / 2.29 | 7.50 / 2.29 | 8.25 / 2.51 |
Engine Wheelbase (ft / m) | 13.50 / 4.11 | 15 / 4.57 | 15 / 4.57 | 15 / 4.57 | 15 / 4.57 |
Ratio of driving wheelbase to overall engine wheelbase | 0.52 | 0.51 | 0.50 | 0.50 | 0.55 |
Overall Wheelbase (engine & tender) (ft / m) | 15 / 4.57 | 37.50 / 11.43 | 37.50 / 11.43 | 37.50 / 11.43 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 19,264 / 8738 | ||||
Weight on Drivers (lbs / kg) | 36,736 / 16,663 | 56,896 / 25,808 | 50,624 / 22,963 | 47,936 / 21,743 | 52,192 / 23,674 |
Engine Weight (lbs / kg) | 51,520 / 23,369 | 82,880 / 37,594 | 73,920 / 33,530 | 71,680 / 32,514 | 76,832 / 34,850 |
Tender Loaded Weight (lbs / kg) | 60,480 / 27,433 | 60,480 / 27,433 | 59,360 / 26,925 | ||
Total Engine and Tender Weight (lbs / kg) | 82,880 / 37,594 | 134,400 / 60,963 | 132,160 / 59,947 | 136,192 / 61,775 | |
Tender Water Capacity (gals / ML) | 986 / 3.73 | 2613 / 9.90 | 2613 / 9.90 | 2480 / 9.39 | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.38 / 1 | 5.50 / 5 | 5.50 / 5 | 5.50 / 5 | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 31 / 15.50 | 47 / 23.50 | 42 / 21 | 40 / 20 | 43 / 21.50 |
Geometry Relating to Tractive Effort | |||||
Driver Diameter (in / mm) | 66 / 1676 | 60.88 / 1546 | 78.90 / 2004 | 72.90 / 1852 | 72.90 / 1852 |
Boiler Pressure (psi / kPa) | 120 / 830 | 120 / 830 | 150 / 830 | 150 / 1030 | 150 / 1030 |
High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 20" / 381x508 | 16.5" x 22" / 419x559 | 17.5" x 22" / 445x559 | 17.5" x 22" / 445x559 | 17.5" x 22" / 445x559 |
Tractive Effort (lbs / kg) | 6955 / 3154.74 | 10,035 / 4551.80 | 10,888 / 4938.72 | 11,784 / 5345.14 | 11,784 / 5345.14 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.28 | 5.67 | 4.65 | 4.07 | 4.43 |
Heating Ability | |||||
Tubes (number - dia) (in / mm) | 193 - 2" / 51 | ||||
Flues (number - dia) (in / mm) | |||||
Flue/Tube length (ft / m) | 10.40 / 3.17 | ||||
Firebox Area (sq ft / m2) | 81 / 7.53 | 83 / 7.71 | 87 / 8.08 | 102 / 9.48 | |
Grate Area (sq ft / m2) | 15.28 / 1.42 | 19.81 / 1.84 | 15.50 / 1.44 | 17.65 / 1.64 | |
Evaporative Heating Surface (sq ft / m2) | 800 / 74.35 | 938 / 87.14 | 1036 / 96.25 | 993 / 92.25 | 1153 / 107.12 |
Superheating Surface (sq ft / m2) | |||||
Combined Heating Surface (sq ft / m2) | 800 / 74.35 | 938 / 87.14 | 1036 / 96.25 | 993 / 92.25 | 1153 / 107.12 |
Evaporative Heating Surface/Cylinder Volume | 195.57 | 172.28 | 169.15 | 162.13 | 188.26 |
Computations Relating to Power Output (More Information) | |||||
Robert LeMassena's Power Computation | 1834 | 2972 | 2325 | 2648 | |
Same as above plus superheater percentage | 1834 | 2972 | 2325 | 2648 | |
Same as above but substitute firebox area for grate area | 9720 | 12,450 | 13,050 | 15,300 | |
Power L1 | 3003 | 4673 | 4249 | 4949 | |
Power MT | 232.72 | 407.01 | 390.83 | 418.10 |
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | Class 15 | Class 2 |
Locobase ID | 20783 | 20775 |
Railroad | Dutch Rhenish | Dutch Rhenish |
Country | Netherlands | Netherlands |
Whyte | 2-4-0T | 2-4-0 |
Number in Class | 6 | 6 |
Road Numbers | 178-183 | 31-36 |
Gauge | Std | Std |
Number Built | 6 | 6 |
Builder | Sharp, Stewart | Sharp, Stewart |
Year | 1877 | 1865 |
Valve Gear | Stephenson | Stephenson |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 7.83 / 2.39 | |
Engine Wheelbase (ft / m) | 15 / 4.57 | |
Ratio of driving wheelbase to overall engine wheelbase | 0.52 | |
Overall Wheelbase (engine & tender) (ft / m) | 15 / 4.57 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 64,512 / 29,262 | 46,595 / 21,135 |
Engine Weight (lbs / kg) | 92,736 / 42,064 | 69,446 / 31,500 |
Tender Loaded Weight (lbs / kg) | 54,432 / 24,690 | |
Total Engine and Tender Weight (lbs / kg) | 92,736 / 42,064 | 123,878 / 56,190 |
Tender Water Capacity (gals / ML) | 1120 / 4.24 | 2080 / 7.88 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.10 / 1 | 5.50 / 2 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 | 39 / 19.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 66.88 / 1699 | 78.90 / 2004 |
Boiler Pressure (psi / kPa) | 150 / 1030 | 120.40 / 830 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16.5" x 22" / 419x559 | 17.01" x 22.01" / 432x559 |
Tractive Effort (lbs / kg) | 11,418 / 5179.12 | 8260 / 3746.68 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.65 | 5.64 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | ||
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | ||
Firebox Area (sq ft / m2) | 94 / 8.73 | 79.65 / 7.40 |
Grate Area (sq ft / m2) | 15.39 / 1.43 | 18.62 / 1.73 |
Evaporative Heating Surface (sq ft / m2) | 1027 / 95.41 | 986 / 91.60 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 1027 / 95.41 | 986 / 91.60 |
Evaporative Heating Surface/Cylinder Volume | 188.63 | 170.32 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 2309 | 2242 |
Same as above plus superheater percentage | 2309 | 2242 |
Same as above but substitute firebox area for grate area | 14,100 | 9590 |
Power L1 | 4597 | 3786 |
Power MT | 314.19 | 358.27 |