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GCR/LNER Robinson "B3" Class 4-6-0


Class Types
GCR Class 9P
LNER Class B3

General
Designer Robinson
Introduced 1917
Pre-Grouping Great Central Railway
Big Four London and North Eastern Railway
Description (1957) Class B3/3. The survivor of Robinson's 6'9" 4-cylinder 'Lord Farringdon' class, built 1917-20. All were withdrawn 1946-47, except No. 1497, which had been completely rebuilt in 1942 as a 2-cylinder engine. Scrapped in 1949.
Wheels 4-6-0
Number Built as B3 6
Number Scrapped 6
First in Service 11/1917
Last in Service 14/04/1949
Manufacturers
ManufacturerTotal
Gorton Works 6
Orders
BuilderOrder #DateSize
Gorton Works n/a 6

Illustration
Copyright: Alan Whitehead c/o 53A Models
Power
B3/1 B3/2 B3/3
Variant Introduced 1917 1929 1943
Tractive Effort 25,145lbs
As B3/1
24,555lbs
Inside Cylinders 16" x 26" (2 off)
As B3/1
As B3/1
Inside Valves 8"Piston
As B3/1
As B3/1
Inside Motion Stephenson
As B3/1
As B3/1
Outside Cylinders 16" x 26" (2 off)
As B3/1
20" x 26" (2 off)
Outside Valves 8"Piston
As B3/1
10"Piston
Outside Motion Stephenson Caprotti Walschaerts

Wheels
B3/1 B3/2 B3/3
Pony 3' 6"
As B3/1
As B3/1
Drivers 6' 9"
As B3/1
As B3/1
Locomotive Wheelbase 28' 10"
As B3/1
27' 11"
Tender Wheelbase 13'
As B3/1
As B3/1
Total Wheelbase 52' 912"
As B3/1
51' 1058"
Descriptive Wheelbase 6' 6" + 6' 10" + 7' 3" + 8' 3" + (10' 11½") + 6' 6" + 6' 6" = 52' 9½"
As B3/1
6' 6" + 5' 11" + 7' 3" + 8' 3" + (10' 11⅝") + 6' 6" + 6' 6" = 51' 10⅝"

Dimensions
B3/1 B3/2 B3/3
Length (over buffers) 63' 038"
As B3/1
62' 178"
Weight (in running order) 127t 8cwt
As B3/1
119t 13cwt
Weight (loco only) 79t 2cwt
As B3/1
71t 7cwt
Adhesive Weight 57t 2cwt
As B3/1
48t 6cwt
Maximum Axle Load 20t 0cwt
As B3/1
18t 3cwt
Water Capacity 4,000gal
As B3/1
As B3/1
Coal Capacity 6t 0cwt
As B3/1
As B3/1

Boiler & Firebox
B3/1 B3/2 B3/3
Boiler Diagram 13
As B3/1
100A
Boiler Max Diameter 5' 6"
As B3/1
5' 6"
Boiler Barrel Length 17' 3"
As B3/1
13' 1178"
Boiler Pressure 180lbs
As B3/1
225lbs
Boiler Pitch 8' 11"
As B3/1
As B3/1
Firebox Length 8' 6"
As B3/1
9'
Firebox Grate Area 26ft2
As B3/1
27.9ft2
Firebox Heating Surface 163ft2
As B3/1
168ft2
Tube Number 139
As B3/1
141
Tube Diameter 214"
As B3/1
2"
Tube Area 1442ft2
As B3/1
1033ft2
Flue Elements 24
As B3/1
24
Flue Diameter 514"
As B3/1
514"
Flue Area 578ft2
As B3/1
460ft2
Total Evaporative Area 2183ft2
As B3/1
1661ft2
Superheater Elements 24
As B3/1
24
Superheater Element Diameter 1116"
As B3/1
1.244"
Superheater Element Area 294ft2
As B3/1
344ft2