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CR/LMS McIntosh "Dunalastair III" Class 4-4-0


Class Types
CR Class Dunalastair III

General
Designer McIntosh
Pre-Grouping Caledonian Railway
Big Four London, Midland & Scottish Railway
Wheels 4-4-0
Number Built as 900 1
First in Service 06/1900
Last in Service 17/04/1948
Manufacturers
ManufacturerTotal
St. Rollox Works 1

Power
900 900
Variant Introduced   1914
Tractive Effort 18,411lbs
As 900
Inside Cylinders 19" x 26" (2 off)
As 900

Wheels
900 900
Pony 3' 6"
As 900
Drivers 6' 6"
As 900
Locomotive Wheelbase 23' 7"
As 900
Tender Wheelbase 16' 6"
As 900
Total Wheelbase 49' 212"
As 900
Descriptive Wheelbase 6' 6" + 7' 7" + 9' 6" + 8' 1½" + (16' 6") = 49' 2½"
As 900

Dimensions
900 900
Length (over buffers) 57' 934"
As 900
Weight (in running order) 101t 4cwt
As 900
Weight (loco only) 51t 14cwt
As 900
Adhesive Weight 34t 13cwt
As 900
Water Capacity 4,125gal
As 900
Coal Capacity 4t 10cwt
As 900

Boiler & Firebox
900 900
Boiler Max Diameter 4' 914" 4' 914"
Boiler Pressure 180lbs 170lbs
Boiler Pitch 8'
As 900
Firebox Grate Area 22ft2 22ft2
Firebox Heating Surface 138ft2 138ft2
Tube Area 1402ft2 1094.25ft2
Total Evaporative Area 1540ft2
As 900
Superheater Element Area   214ft2
Total Heating Area 1540ft2 1446.25ft2