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LSWR G16 class
Works photograph of LSWR G16 prototype No. 492 at Eastleigh, 1921. The locomotive is in photographic grey livery
Type and origin
Power type
Steam
Designer
Robert Urie
Builder
LSWR Eastleigh Works
Build date
1921
Total produced
4
Specifications
Configuration:
• Whyte
4-8-0T
• UIC
2′D h2tG
Gauge
4 ft 8+1⁄2 in (1,435 mm)
Leading dia.
3 ft 7 in (1.092 m)
Driver dia.
5 ft 1 in (1.549 m)
Length
42 ft 10+1⁄4 in (13.06 m)
Width
9 ft 2 in (2.79 m)
Height
13 ft 1+3⁄8 in (4.00 m)
Axle load
18.50 long tons (18.8 t)
Adhesive weight
72.90 long tons (74.1 t)
Loco weight
95.10 long tons (96.6 t)
Fuel type
Coal
Fuel capacity
3.50 long tons (3.6 t)
Water cap.
2,000 imp gal (9,100 L; 2,400 US gal)
Firebox:
• Grate area
27 sq ft (2.5 m2)
Boiler pressure
180 psi (1.24 MPa)
Heating surface:
• Firebox
139 sq ft (12.9 m2)
• Tubes and flues
1,267 sq ft (117.7 m2)
Superheater:
• Type
Eastleigh (later Maunsell)
• Heating area
231 sq ft (21.5 m2)
Cylinders
Two, outside
Cylinder size
22 in × 28 in (559 mm × 711 mm)
Performance figures
Tractive effort
33,991 lbf (151.20 kN)
Factor of adh.
4.4 (with tanks and bunkers half full)
Career
Operators
London and South Western Railway
→ Southern Railway
→ British Railways
Class
LSWR / SR: G16
Power class
SR: A
BR: 7F, later 8F
Numbers
LSWR: 492–495
SR: E492–E495 → 492–495
BR: 30492–30495
Nicknames
Black Tanks
Withdrawn
1959–1962
Disposition
All scrapped
The LSWR G16 class was a class of steam tank locomotives with a 4-8-0T wheel arrangement. It was designed by Robert Urie and introduced in 1921 specifically for heavy shunting over humps at Feltham marshalling yard, on the London and South Western Railway (LSWR). They were based upon Urie's previous S15 class freight design, and apart from several periods of operating elsewhere on the LSWR and Southern railway network, they remained at Feltham for most of their operational careers.
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