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MR/LMS Deeley "999" Class 4-4-0


General
Designer Richard Deeley
Introduced 1907
Pre-Grouping Company Midland Railway
Grouping Company London, Midland & Scottish Railway
Wheel Arrangement 4-4-0
Number Built as 999 10
First in Service 03/1907
Last in Service 02/1929
Manufacturers
ManufacturerTotal
Derby Works 10
Orders
BuilderSponsorOrder #DateSize
Derby Works  3139 03/1907 1
Derby Works  3371 1909 9

Power
Variant Introduced 1907
Inside Cylinders 19" x 26" (2 off)

Wheels
Pony 3' 31⁄2"
Drivers 6' 61⁄2"
Locomotive Wheelbase 24' 41⁄2"
Descriptive Wheelbase 6' 7½" + 8' 3" + 9' 6" = 24' 4½" (engine only)

Dimensions

Boiler & Firebox
Boiler Diagram G9A
Boiler Max Diameter 4' 8"
Boiler Barrel Length 11' 11"
Boiler Pressure 220lbs
Firebox Type Belpaire
Firebox Length 9'
Total Evaporative Area 1473ft2
Total Heating Area 1473ft2