East African Railways 2-6-4 Locomotives in Kenya
Class Details by Steve Llanso of Sweat House Media
Class MS/10 (Locobase 4335)
Data from [
], accessed 23 December 2006.
This small tank design was used on branch line passenger trains between Nairobi & Nanyuki and Kisumu and Butere. In addition to the water in the side tanks, the MSs also trailed an auxiliary water tender to work Nairobi-Nanyuki and Kisumu-Butere.
By 1939 the railway was ready to retire them, but the start of World War II made every locomotive valuable and the class carried on.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | MS/10 |
| Locobase ID | 4335 |
| Railroad | East African Railways |
| Country | Kenya |
| Whyte | 2-6-4T |
| Number in Class | |
| Road Numbers | |
| Gauge | Metre |
| Number Built | |
| Builder | Nasmyth Wilson |
| Year | 1913 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 117,376 / 53,241 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1440 / 5.45 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 300 / 1136 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 43 / 1092 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 22" / 381x559 |
| Tractive Effort (lbs / kg) | 15,656 / 7101.45 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 12.80 / 1.19 |
| Evaporative Heating Surface (sq ft / m2) | 1024 / 95.17 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1024 / 95.17 |
| Evaporative Heating Surface/Cylinder Volume | 227.57 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2048 |
| Same as above plus superheater percentage | 2048 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |