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LNER Gresley "B2" Class 4-6-0


Class Types
LNER Class B2

General
Designer Gresley
Rebuilt By Thompson
Introduced 1928
Big Four London and North Eastern Railway
Wheels 4-6-0
Number Built as B2 0
Number Scrapped 10
Number Preserved 0
Manufacturers
ManufacturerTotal
Darlington Works 7
North British Locomotive Company, Glasgow 2
Robert Stephenson & Hawthorn Ltd 1

Power
Variant Introduced 1945
Tractive Effort 24,863lbs
Outside Cylinders 20" x 26" (2 off)
Outside Valves 10"Piston
Outside Motion Walschaerts

Wheels
Pony 3' 2"
Drivers 6' 8"
Locomotive Wheelbase 28' 2"
Descriptive Wheelbase 6' 3" + 5' 8" + 7' 3" + 9' 0" (engine only)

Dimensions
Length (over buffers) 51' 5"
Weight (in running order) 125t 10cwt
Adhesive Weight 54t 14cwt
Maximum Axle Load 18t 12cwt

Boiler & Firebox
Boiler Diagram 100A
Boiler Max Diameter 5' 6"
Boiler Barrel Length 13' 1178"
Boiler Pressure 225lbs
Boiler Pitch 9'
Firebox Length 9'
Firebox Grate Area 27.9ft2
Firebox Heating Surface 168ft2
Tube Number 141
Tube Diameter 2"
Tube Area 1033ft2
Flue Elements 24
Flue Diameter 514"
Flue Area 460ft2
Total Evaporative Area 1661ft2
Superheater Elements 24
Superheater Element Diameter 1.244"
Superheater Element Area 344ft2