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Record: 71951 (21/04/2026)
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CR/LMS McIntosh "55" Class 4-6-0


Class Types
CR Class 55
CR Class 55 Y66

General
Designer John McIntosh
Introduced 1902
Pre-Grouping Company Caledonian Railway
Grouping Company London, Midland & Scottish Railway
Description (1957) Short wheelbased engines for use on Oban line. Replaced by Highland Clan's in the 1930's
Wheel Arrangement 4-6-0
Number Built as 55 9
Manufacturers
ManufacturerTotal
St. Rollox Works 9
Orders
BuilderSponsorOrder #DateSize
St. Rollox Works  Y66 1902 5
St. Rollox Works  Y75 1905 4

Power
Short wheelbased engines for use 55 Y66
Tractive Effort 23,300lbs 23,300lbs
Inside Cylinders 19" x 26" (2 off)
As Short wheelbased engines for use
Inside Motion Stephenson
As Short wheelbased engines for use

Wheels
Short wheelbased engines for use 55 Y66
Pony 3' 6"
As Short wheelbased engines for use
Drivers 5'
As Short wheelbased engines for use
Locomotive Wheelbase 23' 91⁄2"
As Short wheelbased engines for use
Descriptive Wheelbase 5' 9" + 6' 9½" + 5' 3" + 6' 0" = 23' 9½" (engine only)
As Short wheelbased engines for use

Dimensions
Short wheelbased engines for use 55 Y66
Weight (loco only) 57t 8cwt
As Short wheelbased engines for use
Water Capacity 3,000gal
As Short wheelbased engines for use

Boiler & Firebox
Short wheelbased engines for use 55 Y66