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LNWR/LMS Webb "Alfred The Great" Class 4-4-0
Class Types
| LNWR Class |
Alfred The GReat |
General
| Designer |
Francis Webb |
| Introduced |
1901 |
| Pre-Grouping |
London and North Western Railway |
| Big Four |
London, Midland & Scottish Railway |
| Wheels |
4-4-0 |
| Number Built as Alfred The Great |
40 |
| Conversions to other classes |
33 |
| Manufacturers |
|
| Orders |
|
| Historical Data |
Similar to Webb Jubilee class but with larger boiler and smaller high pressure cylinders. |
|
|
|
Power
|
As built |
Altered Valve Gear |
| Variant Introduced |
1901 |
1903 |
| Miscellaneous Differences |
|
The two sets of Joy valve gear as built were replaced by 4 sets - one per cylinder |
| Inside Cylinders |
15" x 24" (2 off) |
As As built |
| Inside Motion |
Joy |
As As built |
| Outside Cylinders |
20.5" x 24" (2 off) |
As As built |
| Outside Motion |
Joy |
As As built |
Wheels
|
As built |
Altered Valve Gear |
| Pony |
3' 9" |
As As built |
| Drivers |
7' 1" |
As As built |
| Locomotive Wheelbase |
26' 31⁄2" |
As As built |
| Descriptive Wheelbase |
6' 3" + 10' 4½" + 9' 8" = 26' 3½" (engine only) |
As As built |
Boiler & Firebox
|
As built |
Altered Valve Gear |
| Boiler Diagram |
? |
As As built |
| Boiler Max Diameter |
4' 63⁄4" |
As As built |
| Boiler Barrel Length |
11' |
As As built |
| Total Heating Area |
1579.5ft2 |
As As built |
|
