Midland Railway Class 3F 0-6-0
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The Midland Railway 3F was a class of 0-6-0 steam tender locomotive designed for freight work.
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[edit] Overview
Several different batches were built and many of them passed into LMS ownership in 1923 and into British Railways ownership in 1948.
British Railways numbers were:
- Johnson 4' 11" locos (introduced 1885), 43137-43189
- Johnson 5' 3" locos (introduced 1885), 43191-43773
- Deeley 5' 3" locos (introduced 1906), 43775-43833
The figures 4' 11" and 5' 3" refer to the driving wheel diameter. Many of these locomotives were rebuilt by Henry Fowler with Belpaire firebox.
[edit] Dimensions
[edit] Johnson locos
- LMS/BR Power classification, 3F
- Locomotive weight, 43 tons 17 cwt
- Tender weight, Not known
- Boiler pressure, 175 psi
- Superheater, No
- Cylinders, 18"x26"
- Driving wheel diameter, 4' 11" or 5' 3"
- Tractive effort:
- (4' 11" wheels), 21,240 lb
- (5' 3" wheels), 19,890 lb
- Valve gear, Stephenson (slide valves)
[edit] Deeley locos
- LMS/BR Power classification, 3F
- Locomotive weight, 46 tons 3 cwt
- Tender weight, Not known
- Boiler pressure, 175 psi
- Superheater, No
- Cylinders, 18½"x26"
- Driving wheel diameter, 5' 3"
- Tractive effort, 21,010 lb
- Valve gear, Stephenson (slide valves)
For terminology, see Steam locomotive components
[edit] Sources
- Ian Allan ABC of British Railways Locomotives, 1948 Edition, part 3, pp 10-16
