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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
ManufacturerTotal
Crewe Works 40
Orders
BuilderSponsorOrder #DateSize
Crewe Works  n/a 05/1901 10
Crewe Works  n/a 01/1902 10
Crewe Works  n/a 02/1903 10
Crewe Works  n/a 07/1903 10
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' 312"
As As built
Descriptive Wheelbase 6' 3" + 10' 4½" + 9' 8" = 26' 3½" (engine only)
As As built

Dimensions
As built Altered Valve Gear
Weight (loco only) 58t 0cwt
As As built

Boiler & Firebox
As built Altered Valve Gear
Boiler Diagram ?
As As built
Boiler Max Diameter 4' 634"
As As built
Boiler Barrel Length 11'
As As built
Total Heating Area 1579.5ft2
As As built