Specifications Length Overall 70ft5in (2,146mm) Driving Wheels 80in (2032mm) Total Weight 332,000lb (61t) Fuel 1,800lb (8t) Water 5,000gal Adhesive Weight 34,500lb (61t) Cylinders 3x20x26in (508x660mm) Tractive Effort 29,385lb (13,333kg) Axel Load 45,000lb (20.5t) Heating Surface 2,930sq ft Steam Pressure 180psi Superheater 525sq ft Grate Area 41.25sq ft
The A1 steam locomotive was placed into service in the month of April 1922 ad was a mile stone for Great Britain For that was the month the first of the class was placed into service. Seventynine of this class of locomotive were ordered to be built between 1921 to 1934 and appropiately became the A1 class. The Great Northern railways 4-6-2 were the brainchild of a man named Nigel Gresley (later Sir Nigel Gresley) who became locomotive superintendant of the GNR in 1911. The concept representied by these famous 4-6-2's was that overall a "big engine" (that is on with ample capacity for the job in hand) was the most economical type. The first ten of the A1 Steam locomotive cost an average of 8,560 pounds as against 6,840pounds for the first 10 GWR Castle Class.
A3 road - The A3 is a trunk road in Southern England, connecting London to Portsmouth.
LNERClassA3 4472 Flying Scotsman - The LNERClassA3 Pacific locomotive number 4472 "Flying Scotsman" (originally no. 1472) was built in 1923 for the London and North Eastern Railway (LNER) at Doncaster Works to a design of Sir Nigel Gresley.
LNERClass A1/A3 - The London and North Eastern Railway (LNER) Class A1/A3 is a class of 4-6-2 steam locomotives, designed by Nigel Gresley.
The idea of a new Pacific class is reputed to owe much to Gresley's admiration for the design of the Pennsylvania Railroad Class `K4s' (another popular Aster model from the 1980's).
Further development of ClassA3 led to the famous streamlined A4, the subject of a very successful Aster design dating from 1984.
Over 70 similar locomotives of ClassA3 were actually scrapped, leaving Flying Scotsman as the sole survivor of its class.
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