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HR/LMS Cumming "Highland Clan" Class 4-6-0


Class Types
HR Class Highland Clan

General
Designer Cumming
Introduced 1919
Pre-Grouping Highland Railway
Big Four London, Midland & Scottish Railway
Wheels 4-6-0
Number Built as 4P 8
Number Scrapped 8
First in Service 04/1919
Last in Service 02/1950
Manufacturers
ManufacturerTotal
Hawthorne Leslie 8
Orders
BuilderOrder #DateSize
Hawthorne Leslie n/a 1919 4
Hawthorne Leslie n/a 1921 4

Illustration
Copyright: Alan Whitehead c/o 53A Models
Power
Variant Introduced 1919
Tractive Effort 23,688lbs
Outside Cylinders 21" x 26" (2 off)

Wheels
Pony 3'
Drivers 6'
Locomotive Wheelbase 25' 9"
Tender Wheelbase 13'
Total Wheelbase 50'
Descriptive Wheelbase 6' 7" + 5' 2" + 6' 9" + 7' 3" + 11' 3" + 6' 6" + 6' 6" = 50' 0"

Dimensions
Length (over buffers) 59' 11"
Weight (in running order) 104t 6cwt
Weight (loco only) 62t 4cwt
Adhesive Weight 45t 10cwt
Water Capacity 3,500gal
Coal Capacity 7t 0cwt

Boiler & Firebox
Boiler Diagram ??
Boiler Max Diameter 4' 91316"
Boiler Barrel Length 14' 6"
Boiler Pressure 175lbs
Boiler Pitch 8' 9"
Firebox Length 8'
Firebox Grate Area 25.5ft2
Firebox Heating Surface 139ft2
Tube Number 118
Tube Diameter 2"
Tube Area 919ft2
Flue Elements 21
Flue Diameter 5"
Flue Area 409ft2
Total Evaporative Area 1467ft2
Superheater Element Area 256ft2