LNER PEPPERCORN CLASS A1

:''Disambiguation: LNER Class A1/A3, LNER Thompson Class A1/1''

LNER Class A1 Peppercorn Specification
60133 Pommern passing Leeds-Holbeck High Level Station hauling Leeds Central to Kings Cross Yorkshire Pullmanin 1951
Item	Imperial	Metric
Built	1948-1949 (2007, see article)
Number of pieces	49 (+1 under construction, see article)
Numbers of engines	60114 to 60162, (60163 under construction, see article 60163_Tornado)
Wheel Arrangement	4-6-2	2-3-1 (Pacific)
Length over buffers (including tender)	72' 11 3/4"	22.22 m
Maximum Height	13' 1"	3.99 m
Maximum Width (over cab side screens)	9' 2 7/8"	2.82 m
Diameter of driving wheels	6' 8"	2,032 mm
Diameter of bogie wheels	3' 2"	965 mm
Diameter of trailing carrying wheels	3' 8"	1,118 mm
Power (indicated)		approx 2700 PSi
Power (at drawbar)		600-900 PS
Maximum speed	100 mph	160 km/h
Boiler type	Diagram 118
Boiler maximum diameter	6' 5"	1.96 m
Boiler overall length	29' 2"	8.89 m
Boiler pressure (maximum)	250 lb/sq in	17.25 bar
Piston diameter	19"	483 mm
Valve diameter	10"	250 mm
Piston stroke	26"	660 mm
Grate area	50 sq ft	4.65 m²
Heating surface (firebox)	245.30 sq ft	22.79 m²
Heating surface (small tubes)	1211.57 sq ft	112.56 m²
Heating surface (superheater flue tubes)	1004.50 sq ft	93.32 m²
Total evaporative heating surfaces	2461.37 sq ft	228.67 m²
Small tubes diameter	121 x 2 1/4"	57.2 mm
Superheater flues diameter	43 x 5 1/4"	133.4 mm
Superheater heating surface	697.67 sq ft	64.14 m²
Maximum axle load	22 tons 7 cwt	22.7 t
Adhesive weight (full boiler)	66 tons 11 cwt	67.7 t
Weight of locomotive only (full)	105 tons 4 cwt	106.9 t
Total locomotive and tender weight (full)	166 tons 2 cwt	168.8 t
Tender coal capacity	9 tons	9.14 t
Tender water capacity	5,000 gallons (60163: 6,000 gallons)	22.700 l (60163: 27,240 l)
Tender weight (full)	60 tons 18 cwt	61.87 t
Tender wheel arrangement	8 wheels rigid frame
Tender wheel diameter	4' 2"	1,270 mm

The London and North Eastern Railway (LNER) 'Peppercorn Class A1' was a class of steam locomotives. 49 were built to the design of Arthur Peppercorn (who was the last Chief Mechanical Engineer (CME) of the London and North Eastern Railway) during the early British Railways era, but none survived. A fiftieth example, 60163 Tornado (named after the Panavia Tornado) is however being built by the A1 Steam Locomotive Trust.
The Class has the wheel arrangement 4-6-2 and was powered with three pistons. The chimney system was of the type Double-Kylchap. The new series was ordered by the LNER but delivered later to British Railways. It was built after the nationalization of private railway companies at Doncaster and Darlington works of former LNER between 1948 and 1949. The former LNER Class A1 locomotives designed by Sir Nigel Gresley were renamed before to LNER Class A3. The locomotives were designed to cope with the heaviest passenger trains in the after-war period at the East Coast Mainline (London – York – Newcastle – Edinburgh – Aberdeen) which consisted normally of trains with up to 15 coaches and up to 550 tons. The ‘’’Peppercorn’’’ A1’s were able to pull such a train on a plain at a speed of 60-70 mph (95-110 km/h.

Contents

Names Of Historic Peppercorn A1 Locomotives

External links

Names Of Historic Peppercorn A1 Locomotives

BR number	Name	Build date	Disposal date
60114	''W.P. Allen''	August 1948	December 1964
60115	''Meg Merrilies''	September 1948	November 1962
60116	''Hal o' the Wynd''	October 1948	June 1965
60117	''Bois Roussel''	October 1948	June 1965
60118	''Archibald Sturrock''	November 1948	October 1965
60119	''Patrick Stirling''	November 1948	May 1964
60120	''Kittiwake''	December 1948	January 1964
60121	''Silurian''	December 1948	October 1965
60122	''Curlew''	December 1948	December 1962
60123	''H.A. Ivatt''	February 1949	October 1962
60124	''Kenilworth''	March 1949	March 1966
60125	''Scottish Union''	April 1949	July 1964
60126	''Sir Vincent Raven''	April 1949	January 1965
60127	''Wilson Worsdell''	May 1949	June 1965
60128	''Bongrace''	May 1949	January 1965
60129	''Guy Mannering''	June 1949	October 1965
60130	''Kestrel''	September 1948	October 1965
60131	''Osprey''	October 1948	October 1965
60132	''Marmion''	October 1948	June 1965
60133	''Pommern''	October 1948	June 1965
60134	''Foxhunter''	November 1948	October 1965
60135	''Madge Wildfire''	November 1948	November 1962
60136	''Alcazar''	November 1948	May 1963
60137	''Redgauntlet''	December 1948	October 1962
60138	''Boswell''	December 1948	October 1965
60139	''Sea Eagle''	December 1948	June 1964
60140	''Balmoral''	December 1948	January 1965
60141	''Abbotsford''	December 1948	October 1964
60142	''Edward Fletcher''	February 1949	June 1965
60143	''Sir Walter Scott''	February 1949	May 1964
60144	''King's Courier''	March 1949	April 1963
60145	''Saint Mungo''	March 1949	June 1966
60146	''Peregrine''	April 1949	October 1965
60147	''North Eastern''	April 1949	August 1964
60148	''Aboyeur''	May 1949	June 1965
60149	''Amadis''	May 1949	June 1964
60150	''Willbrook''	June 1949	October 1964
60151	''Midlothian''	June 1949	November 1965
60152	''Holyrood''	July 1949	June 1965
60153	''Flamboyant''	August 1949	November 1962
60154	''Bon Accord''	September 1949	October 1965
60155	''Borderer''	September 1949	October 1965
60156	''Great Central''	October 1949	May 1965
60157	''Great Eastern''	November 1949	January 1965
60158	''Aberdonian''	November 1949	December 1964
60159	''Bonnie Dundee''	November 1949	October 1963
60160	''Auld Reekie''	December 1949	December 1963
60161	''North British''	December 1949	October 1963
60162	''Saint Johnstoun''	December 1949	October 1963
60163	''Tornado''	2007- 08	--/--/--	Working Replica Being Built at Darlignton for 2008

External links

★ LNER encyclopedia

★ A1 Steam Locomotive Trust

★ Historic A1s 1940s - 1960s