GWR 3511 class

The GWR 3511 class were standard gauge 2-4-0T locomotives designed by William Dean for the Great Western Railway and built in 1885.

GWR 3511 to 3520

Type and origin
Power type	Steam
Designer	William Dean
Builder	GWR Swindon
Order number	64 (part)
Serial number	1016–1025
Build date	1885
Total produced	10

Specifications
Configuration:
• Whyte	2-4-0T
• UIC	1B
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)
Wheelbase	17 ft 0 in (5.182 m)
Fuel type	Coal
Heating surface:
• Firebox	103.29 sq ft (9.596 m²)
• Tubes	1,106.57 sq ft (102.804 m²)
• Total surface	1,209.86 sq ft (112.400 m²)
Superheater	None
Cylinders	Two, inside
Cylinder size	17 in × 26 in (432 mm × 660 mm)
Valve gear	Stephenson
Train heating	Steam

Career
Operators	GWR

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