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Record: 12282 (30/03/2025)
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MR/LMS Johnson "1312" Class 4-4-0
General
| Designer |
Samuel Johnson |
| Introduced |
1891 |
| Pre-Grouping Company |
Midland Railway |
| Grouping Company |
London, Midland & Scottish Railway |
| Wheel Arrangement |
4-4-0 |
| Number Built as 1312 |
10 |
| First in Service |
11/1876 |
| Last in Service |
11/1930 |
| Manufacturers |
|
| Orders |
| Builder | Sponsor | Order # | Date | Size | | Kitson | | n/a | 11/1876 | 10 |
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Power
| Variant Introduced |
1876 |
| Inside Cylinders |
17.5" x 26" (2 off) |
Wheels
| Pony |
3' 3" |
| Drivers |
6' 6" |
| Locomotive Wheelbase |
21' 6" |
| Descriptive Wheelbase |
6' 0" + 7' 0" + 8' 6" = 21' 6" (engine only) |
Dimensions
| Weight (in running order) |
41t 0cwt |
Boiler & Firebox
| Boiler Diagram |
B(b) |
| Boiler Max Diameter |
4' 1" |
| Boiler Barrel Length |
10' 6" |
| Boiler Pressure |
160lbs |
| Firebox Type |
Round Top |
| Firebox Length |
5' 11" |
| Firebox Grate Area |
17.5ft2 |
| Firebox Heating Surface |
110ft2 |
| Tube Number |
223 |
| Tube Diameter |
13⁄4" |
| Tube Area |
1123ft2 |
| Total Evaporative Area |
1233ft2 |
| Total Heating Area |
1233ft2 |
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