Egyptian State 4-6-0 Locomotives in Egypt


Class Details by Steve Llanso of Sweat House Media

Class 340 (Locobase 5046)

Data fromData from Bruce (1952), supplemented and corrected by Canadian Transportation & Distribution Management, November 1950. (Thanks to Teemu Koivumaki for his 2 January 2021 supplying the road numbers and thus the number built.) Works numbers were 75615-75634 in February 1948.

One of the last steam locomotives built by Montreal, this Ten-Wheeler had a lean, spread-out axle spacing and high -pitched boiler. Its firebox heating surface included 28 sq ft (2.6 sq m) of thermic syphons.


Class Class 31/Abbas Hilmy (Locobase 10660)

Data from "Siz-Coupled Bogie Express Engine for Egyptian Government Railways," The Locomotive Magazine, Vol XIV (15 July 1908), p. 123. See also E L Ahrons, "Thirty Years of Locomotive Progress in Egypt", Engineer, Volume 118 (27 November 1914), pp 499-501. Works numbers were 18053-18062 in 1908.

In Locobase 10611, we discuss the feedwater heater that was the distinguishing feature of that 4-4-0 class. This slightly later class of Ten-wheeler express locomotives had the same installation. Ahrons commented that the ESR's experience with a 4-6-0 tended "to show that this class consumes too much fuel, and that in view of the fact that in that country there are no gradients, its perpetuation is hardly necessary; at all events, with present-day loads."

By the end of 1911, the class had averaged a coal consumption of 49.2 lb/mile (13.86 kg/km) over 985,210 miles (1,586,288 km).

Principal Dimensions by Steve Llanso of Middle Run Media

Class340Class 31/Abbas Hilmy
Locobase ID5046 10660
RailroadEgyptian StateEgyptian State
CountryEgyptEgypt
Whyte4-6-04-6-0
Number in Class2010
Road Numbers341-360725
GaugeStdStd
Number Built2010
BuilderMontreal LWNorth British
Year19481908
Valve GearWalschaertStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)15 / 4.5714 / 4.27
Engine Wheelbase (ft / m)27.50 / 8.3827.50 / 8.38
Ratio of driving wheelbase to overall engine wheelbase 0.55 0.51
Overall Wheelbase (engine & tender) (ft / m)61.61 / 18.7853.25 / 16.23
Axle Loading (Maximum Weight per Axle) (lbs / kg)38,528 / 17,476
Weight on Drivers (lbs / kg)145,500 / 65,998115,472 / 52,377
Engine Weight (lbs / kg)197,000 / 89,358153,664 / 69,701
Tender Loaded Weight (lbs / kg)138,000 / 62,59697,664 / 44,300
Total Engine and Tender Weight (lbs / kg)335,000 / 151,954251,328 / 114,001
Tender Water Capacity (gals / ML)6600 / 254800 / 18.18
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)2700 / 10219.50 6.60 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)81 / 40.5064 / 32
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)72 / 182975 / 1905
Boiler Pressure (psi / kPa)229.20 / 15.80180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)21" x 28" / 533x71119" x 26" / 483x660
Tractive Effort (lbs / kg)33,412 / 15155.4519,147 / 8684.94
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.35 6.03
Heating Ability
Tubes (number - dia) (in / mm)148 - 2" / 51257 - 2" / 51
Flues (number - dia) (in / mm)32 - 5.375" / 137
Flue/Tube length (ft / m)14 / 4.2715.96 / 4.86
Firebox Area (sq ft / m2)228 / 21.18172 / 15.98
Grate Area (sq ft / m2)32.80 / 3.0528.80 / 2.68
Evaporative Heating Surface (sq ft / m2)1933 / 179.582321 / 215.63
Superheating Surface (sq ft / m2)446 / 41.43
Combined Heating Surface (sq ft / m2)2379 / 221.012321 / 215.63
Evaporative Heating Surface/Cylinder Volume172.21272.03
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation75185184
Same as above plus superheater percentage89465184
Same as above but substitute firebox area for grate area62,18730,960
Power L117,3658389
Power MT789.34480.49

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