North Eastern 2-4-2 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class A / F8 (Locobase 3211)

Data from "NER Class A" in Wikipedia at [link], last accessed 15 October 2022. See also Richard Marsden's LNER Encyclopedia -- [link] (Jan 2004). OS Nock, Locomotives of the NER, 1954)

Developed by TW Worsdell, who, notes Marsden, gave the inside-cylinder Class A some design features that would become characteristic of most NER locos from then on. These included a tapered chimney, a brass cover for the safety valves and a large protective cab."

Data from Glover (1967), who notes that it took the conventional form of placing the firebox between the couple axles. Wikipedia's account says these were the "first locomotives to use steel instead of iron for the boiler." Locobase cannot say whether Wikipedia means for the North Eastern, British locomotives, or some other universe.

Marsden commented that this "most handsome" design did "excellent work on local passenger trains, and many of them were in service for more than 50 years."

This included stints of various length as class F8 on the LNER. (See [link]) .

Marsden's data differ slightly from the Glover data. He also added details about the class's working after the 1923 Grouping, noting "they were mainly used on the lighter suburban services as well as branch lines around Whitby, Northallerton, and Hawes." Withdrawals began in 1928 and ended in 1938.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassA / F8
Locobase ID3211
RailroadNorth Eastern
CountryGreat Britain
Whyte2-4-2T
Number in Class60
Road Numbers
GaugeStd
Number Built60
BuilderGateshead
Year1886
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.10 / 2.47
Engine Wheelbase (ft / m)23.10 / 7.04
Ratio of driving wheelbase to overall engine wheelbase 0.35
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)36,512
Weight on Drivers (lbs / kg)64,960 / 29,465
Engine Weight (lbs / kg)116,480 / 52,835
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)116,480 / 52,835
Tender Water Capacity (gals / ML)1488
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.20
Minimum weight of rail (calculated) (lb/yd / kg/m)54 / 27
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)64 / 1626
Boiler Pressure (psi / kPa)140 / 970
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)14,459 / 6558.50
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.49
Heating Ability
Tubes (number - dia) (in / mm)198 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.96
Firebox Area (sq ft / m2)98.40 / 9.14
Grate Area (sq ft / m2)15.40 / 1.43
Evaporative Heating Surface (sq ft / m2)1092 / 101.49
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1092 / 101.49
Evaporative Heating Surface/Cylinder Volume154.49
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2156
Same as above plus superheater percentage2156
Same as above but substitute firebox area for grate area13,776
Power L13346
Power MT227.11

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