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Record: 71951 (21/04/2026)
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LSWR/SR Adams "46" Class - 'Ironclad'


Class Types
(Also known as) Ironclad (Nicknamed Ironclad's due to their sturdy nature and the provision of solid centred bogie wheels.)

General
Designer William Adams
Introduced 1879
Pre-Grouping Company London and South Western Railway
Grouping Company Southern Railway
Number Built as 46 12
Number Scrapped 12
First in Service 06/1879
Last in Service 07/1925
Manufacturers
ManufacturerTotal
Beyer Peacock Ltd. 12
Orders
BuilderSponsorOrder #DateSize
Beyer Peacock Ltd.  n/a 07/08/1878 12

Power
4-4-0T 4-4-2T
Variant Introduced 1879 1883
Miscellaneous Differences   Added an extended bunker supported by a trailing axle in order to improve the range of the locomotives.
Outside Cylinders 18" x 24" (2 off)
As 4-4-0T
Outside Motion Stephenson
As 4-4-0T

Wheels
4-4-0T 4-4-2T
Pony 2' 6"
As 4-4-0T
Drivers 5' 7"
As 4-4-0T
Total Wheelbase 21' 81⁄2" 28' 51⁄2"
Descriptive Wheelbase 6' 6" + 6' 8½" + 8' 6" = 21' 8½" 6' 6" + 6' 8½" + 8' 6" + 6' 9" = 28' 5½"

Dimensions
4-4-0T 4-4-2T
Weight (in running order) 50t 16cwt 58t 19cwt
Maximum Axle Load 17t 14cwt 17t 6cwt
Water Capacity 1,000gal 1,650gal
Coal Capacity 1t 5cwt 3t 0cwt

Boiler & Firebox
4-4-0T 4-4-2T
Boiler Max Diameter 4' 2"
As 4-4-0T
Boiler Barrel Length 10' 03⁄4"
As 4-4-0T
Boiler Pressure 160lbs
As 4-4-0T
Firebox Type Round Top
As 4-4-0T
Firebox Length 5' 8"
As 4-4-0T
Firebox Grate Area 16ft2
As 4-4-0T
Firebox Heating Surface 83.75ft2
As 4-4-0T
Tube Number 204
As 4-4-0T
Tube Diameter 15⁄8"
As 4-4-0T
Tube Area 900ft2
As 4-4-0T
Total Evaporative Area 983.75ft2
As 4-4-0T
Total Heating Area 983.75ft2
As 4-4-0T