Data from "6-Coupled Narrow Gauge Engine, Egyptian Delta Light Railways", Railway Engineer, Volume 27, No 6 (June 1906), p. 166-167; and "Narrow Gauge Engines ..." RE, Volume 28, No 9 (September 1907), pp. 286-287. Nasmyth Wilson supplied the first batch o 18 in 1903 and North British Locomotive Company followed with 12 more in 1905.
RE stresses the need to balance the weights evenly along all three coupled axles. They also commented that traffic on this system "demonstrated in a striking manner the enormous transporting capacity of narrow gauge railways and the great utility such railways are to the agricultural industry."
A detailed sectional drawing appeared in the September 1907 issue.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 20273 |
| Railroad | Egyptian Delta Light Railway |
| Country | Egypt |
| Whyte | 0-6-4T |
| Number in Class | 30 |
| Road Numbers | |
| Gauge | 75 cm |
| Number Built | 30 |
| Builder | several |
| Year | 1903 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6.92 / 2.11 |
| Engine Wheelbase (ft / m) | 20 / 6.10 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.35 |
| Overall Wheelbase (engine & tender) (ft / m) | 20 / 6.10 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 12,388 / 5619 |
| Weight on Drivers (lbs / kg) | 36,714 / 16,653 |
| Engine Weight (lbs / kg) | 59,718 / 27,088 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 480 / 1.82 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.20 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 20 / 10 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 36.50 / 927 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 16" / 305x406 |
| Tractive Effort (lbs / kg) | 8585 / 3894.10 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.28 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 115 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 54 / 5.02 |
| Grate Area (sq ft / m2) | 11.90 / 1.11 |
| Evaporative Heating Surface (sq ft / m2) | 554 / 51.47 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 554 / 51.47 |
| Evaporative Heating Surface/Cylinder Volume | 264.52 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1904 |
| Same as above plus superheater percentage | 1904 |
| Same as above but substitute firebox area for grate area | 8640 |
| Power L1 | 3829 |
| Power MT | 689.78 |