Data from [], accessed 23 February 2007. The Colonel Hollman Fred Stephens railway site -- [], also accessed 23 Feb 2007 -- gives a good summary of the ECMR's profile and history.
These little engines (works #1660-1661) had tanks of an unusual cross-section straddling their boilers. In place of the more typical "cruller" shape, these had an ogee configuration; that is, the tank tapered in toward the center line as it rose above the boiler.
#2 was substantially made over with a new, more conventional boiler in 1899 and converted to run on the standard gauge in 1908 as an 0-4-2ST (Its wheelbase now spanned 9 ft 4 in/2.84 m ). It eventually ended up on the Bere Alston and Calstock Light Railway (Plymouth and South Western Junction Railway) as their Hesperus. But it didn't run long as the passenger service for which it was intended materialized only slowly and newer engines were available to haul it. So in 1912 it entered service on the Selsey Tram, where it served until 1927.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | 1 |
Locobase ID | 8199 |
Railroad | East Cornwall Mineral Railway |
Country | Great Britain |
Whyte | 0-4-0ST |
Number in Class | 2 |
Road Numbers | 1-2 |
Gauge | 3'6" |
Number Built | 2 |
Builder | Neilson & Co |
Year | 1871 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 5 / 1.52 |
Engine Wheelbase (ft / m) | 5 / 1.52 |
Ratio of driving wheelbase to overall engine wheelbase | 1 |
Overall Wheelbase (engine & tender) (ft / m) | 5 / 1.52 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 26,320 / 11,939 |
Engine Weight (lbs / kg) | 26,320 / 11,939 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | 26,320 / 11,939 |
Tender Water Capacity (gals / ML) | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 22 / 11 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 36 / 914 |
Boiler Pressure (psi / kPa) | 85 / 590 |
High Pressure Cylinders (dia x stroke) (in / mm) | 10" x 18" / 254x457 |
Tractive Effort (lbs / kg) | 3613 / 1638.83 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.28 |
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) | |
Evaporative Heating Surface (sq ft / m2) | 597 / 55.48 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 597 / 55.48 |
Evaporative Heating Surface/Cylinder Volume | 364.86 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | |
Same as above plus superheater percentage | |
Same as above but substitute firebox area for grate area | |
Power L1 | |
Power MT |