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Record: 12282 (30/03/2025)
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MR/LMS Johnson "2606" Class 4-4-0


General
Designer Samuel Johnson
Introduced 1900
Pre-Grouping Company Midland Railway
Grouping Company London, Midland & Scottish Railway
Wheel Arrangement 4-4-0
Number Built as 2606 10
First in Service 1900
Last in Service 11/1947
Manufacturers
ManufacturerTotal
Derby Works 10
Orders
BuilderSponsorOrder #DateSize
Derby Works  1869 1900 10

Power
Variant Introduced 1900
Inside Cylinders 19.5" x 26" (2 off)

Wheels
Pony 3' 61⁄2"
Drivers 6' 9"
Locomotive Wheelbase 23' 21⁄2"
Descriptive Wheelbase 6' 6" + 7' 2½" + 9' 6" = 23' 2½" (engine only)

Dimensions
Weight (loco only) 53t 0cwt

Boiler & Firebox
Boiler Diagram GX
Boiler Max Diameter 4' 8"
Boiler Barrel Length 10' 6"
Boiler Pressure 180lbs
Firebox Type Belpaire
Firebox Length 8'
Total Evaporative Area 1519ft2
Total Heating Area 1519ft2