Data from "The Egyptian Government Railways and Locomotives," The Locomotive Magazine, Vol X (15 January 1904), p. 10. Boiler pressure is an estimate.
These locomotives were originally produced for the Azizah-Mussrieh railway in Turkey, but, as the author of the LM history delightfully, if ambiguously, puts it, "...like many good things intended for Turkey, never arrived there."
What the ERA received were some pretty lusty locomotives, at least in terms of the ratio of grate area and firebox heating surface to overall heating surface. The profile suggested a burly character with outside frames curving over the coupled-axle axle boxes. The author notes that other than the stack and the cab, the design "bore a strong resemblance to Mr Sturrock's Great Northern design of the period."
When Trevithick rebuilt the class in 1887, he removed the compensating beams between the springs of the coupled axles and adopted a straightline boiler. The spark-arresting stack originally intended to control wood-burning byproducts had long since been replaced by a much smaller "chimney".
Data from "The Egyptian Government Railways and Locomotives," The Locomotive Magazine, Vol IX (7 November 1903), p. 268.
Similar to the Medocs in service in eastern France and Italy, these Medocs were built fo the Lombardy-Venetian Railway in Italy and shipped to Egypt. They had large domes placed well forward on the boiler. In service for close to 30 years
Data from E L Ahrons, "Thirty Years of Locomotive Progress in Egypt", Engineer, Volume 118 (27 November 1914), pp 499-501. Neilson works numbers were 3918-3929.
Ahrons said that the motion, cylinders, and boiler were exactly the same as those of the Singles, described in Locobase 10456. In addition to Neilson and Company's dozen, Franco Belge constructed 48 at La Croyere and 18 at Raismes.
Data from E L Ahrons, "Thirty Years of Locomotive Progress in Egypt", Engineer, Volume 118 (27 November 1914), pp 499-501.
Principal Dimensions by Steve Llanso of Middle Run Media | ||||
---|---|---|---|---|
Class | 154 | 86 | Class 2 | Class 3 |
Locobase ID | 10435 | 10399 | 10466 | 20258 |
Railroad | Egyptian State | Egyptian State | Egyptian State | Egyptian State |
Country | Egypt | Egypt | Egypt | Egypt |
Whyte | 2-4-0 | 2-4-0 | 2-4-0 | 2-4-0ST |
Number in Class | 4 | 5 | 64 | 5 |
Road Numbers | 154-157 / 31-34. | 86-89 | 35-98 | |
Gauge | Std | Std | Std | Std |
Number Built | 4 | 5 | 64 | 5 |
Builder | Kitson & Co | Koechlin | Neilson & Co | |
Year | 1866 | 1864 | 1889 | 1890 |
Valve Gear | Stephenson | Stephenson | Stephenson | Stephenson |
Locomotive Length and Weight | ||||
Driver Wheelbase (ft / m) | 7.50 / 2.29 | 5.77 / 1.76 | 8.50 | 7 / 2.13 |
Engine Wheelbase (ft / m) | 16.58 / 5.05 | 10.86 / 3.31 | 16.50 | 14 / 4.27 |
Ratio of driving wheelbase to overall engine wheelbase | 0.45 | 0.53 | 0.52 | 0.50 |
Overall Wheelbase (engine & tender) (ft / m) | 29.20 / 8.90 | 14 / 4.27 | ||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||||
Weight on Drivers (lbs / kg) | 58,800 / 26,671 | 55,328 / 25,096 | ||
Engine Weight (lbs / kg) | 71,120 / 32,260 | 71,121 / 32,260 | 84,336 / 38,254 | 80,416 / 36,476 |
Tender Loaded Weight (lbs / kg) | ||||
Total Engine and Tender Weight (lbs / kg) | ||||
Tender Water Capacity (gals / ML) | 840 / 3.18 | |||
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||||
Minimum weight of rail (calculated) (lb/yd / kg/m) | 49 / 24.50 | |||
Geometry Relating to Tractive Effort | ||||
Driver Diameter (in / mm) | 72 / 1829 | 59.10 / 1500 | 75 / 1905 | 72 / 1829 |
Boiler Pressure (psi / kPa) | 120 / 830 | 111.70 / 770 | 140 / 970 | 140 / 970 |
High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 22" / 432x559 | 16.54" x 24.02" / 420x610 | 17.5" x 24" / 445x610 | 14" x 20" / 356x508 |
Tractive Effort (lbs / kg) | 9007 / 4085.51 | 10,557 / 4788.58 | 11,662 / 5289.80 | 6479 / 2938.83 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.04 | 8.54 | ||
Heating Ability | ||||
Tubes (number - dia) (in / mm) | 158 - 2.008" / 51 | 177 - 2.008" / 51 | 217 - 2.008" / 51 | |
Flues (number - dia) (in / mm) | ||||
Flue/Tube length (ft / m) | 12.83 / 3.91 | 12.83 / 3.91 | 8.92 / 2.72 | |
Firebox Area (sq ft / m2) | 105 / 9.76 | 80.70 / 7.50 | 116.40 / 10.81 | 91 / 8.45 |
Grate Area (sq ft / m2) | 18.88 / 1.75 | 13.77 / 1.28 | 18.75 / 1.74 | 12.50 / 1.16 |
Evaporative Heating Surface (sq ft / m2) | 960 / 89.22 | 1196 / 111.15 | 1128 / 104.79 | 795 / 73.86 |
Superheating Surface (sq ft / m2) | ||||
Combined Heating Surface (sq ft / m2) | 960 / 89.22 | 1196 / 111.15 | 1128 / 104.79 | 795 / 73.86 |
Evaporative Heating Surface/Cylinder Volume | 166.10 | 200.22 | 168.83 | 223.10 |
Computations Relating to Power Output (More Information) | ||||
Robert LeMassena's Power Computation | 2266 | 1538 | 2625 | 1750 |
Same as above plus superheater percentage | 2266 | 1538 | 2625 | 1750 |
Same as above but substitute firebox area for grate area | 12,600 | 9014 | 16,296 | 12,740 |
Power L1 | 3700 | 2946 | 4479 | 5893 |
Power MT | 335.87 |