Midland & South-Western Junction / Swindon, Marlborough & Andover 0-4-4 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class 15 (Locobase 10152)

Data from "The Locomotives of the Midland & South-Western Junction Railway," The Locomotive Magazine, Vol V (June 1900), p. 90-91. Works number was 3682..

This was a single example on the MSWJ of what was a popular arrangement for mixed-traffic locomotives that would be operated stop-and-go.


Class B (Locobase 7374)

Data from Titre Exposition universelle internationale de 1878 a Paris. Rapports du jury internationale..Volume Groupe VI - Classe 64. Rapport sur le materiel des chemins de fer. p. 50 (cnum.cnam.fr/CGI/fpage.cgi?8XAE277-11.1/54/100/312/0/0 (accessed 1 September 2005) table and page 89, [link] (accessed 7 Jan 2006), and "The Locomotives of the Midland & South-Western Junction Railway," The Locomotive Magazine, Vol V (April 1900), p. 56

The steamindex summary tells us that this single Fairlie was Avonside's works #1244 that was shown at the Paris Exposition and then sold to the SM & A railway. Unlike most other Fairlie designs, a single boiler lay over the running gear on a rigid frame.

A check of a website dealing with the successor railway (the MSWJ) -- [link] (accessed 7 January 2006) -- describes the line as "The Midland & South Western Junction Railway ...a minor railway of just under 60 route miles". An associated table shows that during its time with the SM & A, its working boiler pressure was raised from 120 psi to 140 psi. It was withdrawn in 1892. A listing in [link] ("MICK'S FIELD SOURCE GUIDE TO MAGAZINE ENTRIES FOR THE SOUTHERN RAILWAY" also accessed on 7 January 2006) says its boiler was later used as a stationary boiler at Cirencester.

Principal Dimensions by Steve Llanso of Middle Run Media
Class15B
Locobase ID10152 7374
RailroadMidland & South-Western Junction (MSWJ)Swindon, Marlborough & Andover (MSWJ)
CountryGreat BritainGreat Britain
Whyte0-4-4T0-4-4T
Number in Class11
Road Numbers15 / 234
GaugeStdStd
Number Built11
BuilderBeyer, PeacockAvonside
Year18951878
Valve GearStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.50 / 2.29 6.50 / 1.98
Engine Wheelbase (ft / m)21.58 / 6.58
Ratio of driving wheelbase to overall engine wheelbase 0.30
Overall Wheelbase (engine & tender) (ft / m)15.58 / 4.7521.58 / 6.58
Axle Loading (Maximum Weight per Axle) (lbs / kg)35,336 / 16,028
Weight on Drivers (lbs / kg)67,144 / 30,45652,911 / 24,000
Engine Weight (lbs / kg)107,184 / 48,61897,003 / 44,000
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) 2.20 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)56 / 2844 / 22
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)62 / 157566 / 1676
Boiler Pressure (psi / kPa)150 / 1030140 / 970
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x61016" x 22" / 406x559
Tractive Effort (lbs / kg)14,264 / 6470.0510,155 / 4606.24
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.71 5.21
Heating Ability
Tubes (number - dia) (in / mm)181 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.79 / 3.29
Firebox Area (sq ft / m2)96.60 / 8.9872 / 6.69
Grate Area (sq ft / m2)17.70 / 1.6415.50 / 1.44
Evaporative Heating Surface (sq ft / m2)1026 / 95.351094 / 101.67
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1026 / 95.351094 / 101.67
Evaporative Heating Surface/Cylinder Volume162.73213.69
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation26552170
Same as above plus superheater percentage26552170
Same as above but substitute firebox area for grate area14,49010,080
Power L137104374
Power MT243.63364.50

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