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Record: 71951 (21/04/2026)
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GCR/LNER Robinson "B6" Class 4-6-0
Class Types
| GCR Class |
8N |
| LNER Class |
B6 |
General
| Designer |
John Robinson |
| Introduced |
1918 |
| Pre-Grouping Company |
Great Central Railway |
| Grouping Company |
London and North Eastern Railway |
| Wheel Arrangement |
4-6-0 |
| Number Built as B6 |
3 |
| Number Scrapped |
3 |
| First in Service |
07/1918 |
| Last in Service |
31/12/1947 |
| Manufacturers |
|
| Orders |
|
|
|
|
Power
| Variant Introduced |
1918 |
| Tractive Effort |
25,798lbs |
| Outside Cylinders |
21" x 26" (2 off) |
| Outside Valves |
10"Piston |
| Outside Motion |
Stephenson |
Wheels
| Pony |
3' 6" |
| Drivers |
5' 8" |
| Locomotive Wheelbase |
27' 6" |
| Tender Wheelbase |
13' |
| Total Wheelbase |
50' 81⁄2" |
| Descriptive Wheelbase |
6' 6" + 5' 9" + 6' 9" + 8' 6" + (10' 2½") + 6' 6" + 6' 6" = 50' 8½" |
Dimensions
| Length (over buffers) |
61' 21⁄2" |
| Weight (in running order) |
121t 4cwt |
| Weight (loco only) |
72t 18cwt |
| Adhesive Weight |
48t 6cwt |
| Maximum Axle Load |
18t 4cwt |
| Water Capacity |
4,000gal |
| Coal Capacity |
6t 0cwt |
Boiler & Firebox
| Boiler Diagram |
15B |
| Boiler Max Diameter |
5' 6" |
| Boiler Barrel Length |
15' |
| Boiler Pressure |
180lbs |
| Boiler Pitch |
8' 11" |
| Firebox Type |
Belpaire |
| Firebox Length |
8' 6" |
| Firebox Grate Area |
26.24ft2 |
| Firebox Heating Surface |
174ft2 |
| Tube Number |
116 |
| Tube Diameter |
21⁄4" |
| Tube Area |
1050ft2 |
| Flue Elements |
28 |
| Flue Diameter |
51⁄4" |
| Flue Area |
591ft2 |
| Total Evaporative Area |
1815ft2 |
| Superheater Elements |
28 |
| Superheater Element Diameter |
1.087" |
| Superheater Element Area |
308ft2 |
| Total Heating Area |
2123ft2 |
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