G&SWR 128 Class

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G&SWR 128 Class
G&SWR 128 Class No. 128.jpg
Type and origin
Power typeSteam
Designer James Manson
Builder North British Locomotive Co.
Serial number19504–19505
Build date1911
Total produced2
Specifications
Configuration:
   Whyte 4-6-0
   UIC 2′C h2
Gauge 4 ft 8+12 in (1,435 mm)
Leading dia. 3 ft 8 in (1,118 mm)
Driver dia.6 ft 6 in (1,981 mm)
Wheelbase 27 ft 7 in (8.41 m)
Height12 ft 11+12 in (3.950 m)
Loco weight69 long tons 2 cwt (154,800 lb or 70.2 t)
Fuel type Coal
Water cap.4,100 imp gal (19,000 L; 4,900 US gal)
Boiler pressure160 psi (1,100 kPa)
Heating surface1,560 sq ft (145 m2)
Superheater:
  TypeSchmidt
  Heating area445 sq ft (41.3 m2)
Cylinders Two
Cylinder size 21 in × 26 in (533 mm × 660 mm)
Valve gear Stephenson
Performance figures
Tractive effort 19,992 lbf (88.93 kN)
Career
Operators G&SWR  » LMS
Class G&SWR: 128
Power classLMS: 3P
NumbersG&SWR: 128, 129;
(from 1919): 512, 513;
LMS: 14673, 14674
Retired1933–1934
DispositionBoth scrapped

The Glasgow and South Western Railway (G&SWR) 128 class was a class of two 4-6-0 steam locomotives designed by James Manson as a development of his 381 Class 4-6-0s, and were his final locomotive design before he retired. They were built in 1911 by the North British Locomotive Company at its Queens Park works and were considered both good looking and excellent performers. [1]

Contents

Numbering

G&SWR

Originally numbered 128 and 129, they became 512 and 513 in the G&SWR renumbering of 1919.

LMS

After the 1923 grouping they became LMS numbers 14673 and 14674, but were scrapped in 1933 and 1934 under the LMS drive for standardisation.

Features

The 128 class, along with the 381 class, were the only G&SWR locomotives to use the 4-6-0 wheel arrangement, and were also the only G&SWR locos to have Belpaire fireboxes. As originally built, No.129 had a Weir feedwater heater mounted on top of the boiler between the chimney and the dome, but this was removed in 1919. The same locomotive operated for a period as a 4-4-2 after it broke a trailing rod. [1]

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References

  1. 1 2 Stewart, W.D. (March 1971). "Manson's 128 class 4-6-0". Railway Modeller. Vol. 22, no. 245. Beer: Peco publications & publicity Ltd. p. 91.