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Record: 71951 (21/04/2026)
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CR/LMS Drummond "66" Class 4-4-0


Class Types
CR Class 66
CR Class 66 Y21
CR Class 66 Y25

General
Designer Dugald Drummond
Introduced 1884
Pre-Grouping Company Caledonian Railway
Grouping Company London, Midland & Scottish Railway
Wheel Arrangement 4-4-0
Number Built as 66 28
Manufacturers
ManufacturerTotal
Neilson, Reid & Co. 10
St. Rollox Works 18
Orders
BuilderSponsorOrder #DateSize
Neilson, Reid & Co.  n/a 1884 10
St. Rollox Works  Y 1885 6
St. Rollox Works  Y21 1889 6
St. Rollox Works  Y25 1891 6
Historical Data Standard passenger engine. Westinghouse brakes, lever reverse.

Power
66 66 Y21 66 Y25
Inside Cylinders 18" x 26" (2 off)
As 66
As 66
Inside Motion Stephenson
As 66
As 66

Wheels
66 66 Y21 66 Y25
Pony 3' 6"
As 66
As 66
Drivers 6' 6"
As 66
As 66
Locomotive Wheelbase 22' 1"
As 66
As 66
Descriptive Wheelbase 6' 6" + 6' 7" + 9' 0" = 22' 1" (engine only)
As 66
As 66

Dimensions
66 66 Y21 66 Y25
Weight (loco only) 45t 3cwt
As 66
As 66

Boiler & Firebox
66 66 Y21 66 Y25