Yarmouth & North Norfolk 0-6-0 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class Ida (Locobase 20873)

Data from P C D [P C Dewhurst?], "The Midland and Great Northern Joint Railway and its Locomotives", Locomotive Magazine, Volume 27 (15 April 1921), pp. 108. Works number was 416 in 1877.

The first of the two saddle-tanks from the Newcastle firm bore the name of the daughter of the Y&NN's chairman. The class had bigger boilers than the contemporaneous engines shown in Locobase 20872. Compared to those earlier locomotives, the Ida and a later sister had almost no domes at all.

The Y&NN merged with other railways to form the Eastern & Midlands in 1883, which was reorganized as the Midland & Great Northern Joint Railway in 1893. "Ida" took road number 7a, but was discarded soon after.

In 1880, Black, Hawthorn sent another pair to the two cooperating railways that would be taken over by the Eastern & Midlands in 1883. "Holt" (works number 503) was delivered to the Lynn & Fakenham; it was later renamed "Chairman". Renumbered 6 by the E&M and later renumbered 6a, this engine too went north to serve a colliery.

Y&NN took "Aylsham" (works number 517), placing it at the head of pasenger trains between Yarmouth and Stalham (17 3/4 miles/28.6 km), later working as far as Melton Constable. Givne E&M number 17, the engine later gave up that number and, as 17a, worked as a yard engine.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassIda
Locobase ID20873
RailroadYarmouth & North Norfolk
CountryGreat Britain
Whyte0-6-0ST
Number in Class2
Road Numbers6a-7a
GaugeStd
Number Built2
BuilderBlack, Hawthorn
Year1877
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.75 / 3.28
Engine Wheelbase (ft / m)10.75 / 3.28
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)10.75 / 3.28
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)58,240 / 26,417
Engine Weight (lbs / kg)58,240 / 26,417
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)798 / 3.02
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.10 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)32 / 16
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)40.50 / 1029
Boiler Pressure (psi / kPa)140 / 970
High Pressure Cylinders (dia x stroke) (in / mm)14" x 20" / 356x508
Tractive Effort (lbs / kg)11,518 / 5224.48
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.06
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)49.50 / 4.60
Grate Area (sq ft / m2) 8.50 / 0.79
Evaporative Heating Surface (sq ft / m2)556 / 51.65
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)556 / 51.65
Evaporative Heating Surface/Cylinder Volume156.03
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1190
Same as above plus superheater percentage1190
Same as above but substitute firebox area for grate area6930
Power L12131
Power MT242.00

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