Data from "The Locomotives of the Great Eastern Railway," The Locomotive Magazine, Vol X (15 February 1904), p. 21. Boiler pressure is an estimate.
Of classic and even then old-fashioned appearance, this trio had the hemispherical fireboxes, straight boiler, single driving axle just ahead of the firebox and driven by outside cylinders. Less common even then was the separation between carrying axles, the two being divided by the cylinders.
The last of these (44) lasted until July 1868.
Data from "The Locomotives of the GER," The Locomotive Magazine, Vol VIII (7 Mar 1903), p. 160. Boiler pressure is an estimate.
According to the account in the Locomotive Magazine, locomotive superintendent John Hunter seems not to have designed locomotives as to have bought from a variety of builders "...that particular type of engine which was their specialty at the time." So it was with Jones & Potts and these single wheelers. Haystack-firebox at the rear, behind the tall driver, balanced the tall stack. The leading axle rolled just behind the smokebox, the other carrying axle was placed just ahead of the driver set.
Following locomotives 91-97 dispensed with the haystack in favor of a raised firebox and dome placed well forward. They had a longer wheelbase (12 ft 4 in) and weighed in at 51,044 lb. 94 and 97 later received trailing axles (4-2-2) which further lengthened the wheelbase.
Data from "The Locomotives of the GER," The Locomotive Magazine, Vol VIII (4 April 1903), p. 228. Boiler pressure is an estimate.
Before the weakness of the single driver placed well back became clear, the ECR bought 5 more such locomotives (works numbers 560-564) with taller drivers. They were soon modified as 2-2-2 engines by deleting the second carrying axle, moving the driving axle still closer to the leading axle, and fitting a trailing axle under the footboard. The alteration was success and the class ran for almost 20 years.
Principal Dimensions by Steve Llanso of Middle Run Media | |||
---|---|---|---|
Class | 13 | 88 | 98 |
Locobase ID | 10437 | 10284 | 10299 |
Railroad | Norfolk Railway (GER) | Eastern Counties (GER) | Eastern Counties (GER) |
Country | Great Britain | Great Britain | Great Britain |
Whyte | 4-2-0 | 4-2-0 | 4-2-0 |
Number in Class | 3 | 3 | 5 |
Road Numbers | 13-15 / 42, 143-144 | 88-90 | 98-102 |
Gauge | Std | Std | Std |
Number Built | 3 | 3 | 5 |
Builder | C Tayleur & Co | Jones & Potts | Jones & Potts |
Year | 1846 | 1846 | 1846 |
Valve Gear | Stephenson | ||
Locomotive Length and Weight | |||
Driver Wheelbase (ft / m) | |||
Engine Wheelbase (ft / m) | 12 / 3.66 | 12 / 3.66 | 13 / 3.96 |
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) | |||
Tender Loaded Weight (lbs / kg) | |||
Total Engine and Tender Weight (lbs / kg) | |||
Tender Water Capacity (gals / ML) | 1200 / 4.55 | 1200 / 4.55 | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |||
Minimum weight of rail (calculated) (lb/yd / kg/m) | |||
Geometry Relating to Tractive Effort | |||
Driver Diameter (in / mm) | 72 / 1829 | 72 / 1829 | 78 / 1981 |
Boiler Pressure (psi / kPa) | 100 / 690 | 100 / 690 | 100 / 690 |
High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 24" / 381x610 | 15" x 24" / 381x610 | 15" x 24" / 381x610 |
Tractive Effort (lbs / kg) | 6375 / 2891.65 | 6375 / 2891.65 | 5885 / 2669.39 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | |||
Heating Ability | |||
Tubes (number - dia) (in / mm) | 139 - 1.75" / 44 | 140 - 2" / 51 | 125 - 2" / 51 |
Flues (number - dia) (in / mm) | |||
Flue/Tube length (ft / m) | 14 / 4.27 | 13.50 / 4.11 | |
Firebox Area (sq ft / m2) | 65.40 / 6.08 | ||
Grate Area (sq ft / m2) | 9.50 / 0.88 | 10.50 / 0.98 | 11.40 / 1.06 |
Evaporative Heating Surface (sq ft / m2) | 880 / 81.78 | ||
Superheating Surface (sq ft / m2) | |||
Combined Heating Surface (sq ft / m2) | 880 / 81.78 | ||
Evaporative Heating Surface/Cylinder Volume | 179.27 | ||
Computations Relating to Power Output (More Information) | |||
Robert LeMassena's Power Computation | 950 | 1050 | 1140 |
Same as above plus superheater percentage | 950 | 1050 | 1140 |
Same as above but substitute firebox area for grate area | 6540 | ||
Power L1 | 3197 | ||
Power MT |