LNER Class H1](https://upload.wikimedia.org/wikipedia/commons/b/b3/NER///D///CLASS///H1///2150.jpg) Powertype: Steam
Name: NER Class D · LNER Class H1
Designer: Vincent Raven
Builder: NER Darlington
Builddate: 1913, 1920—1922
Totalproduction: 45
Whytetype: 4-4-4T
Leadingdiameter: 3 ft
Driverdiameter: 5 ft
Trailingdiameter: 3 ft
Wheelbase: 34 ft
Locoweight: 87.35 LT
Fueltype: Coal
Fuelcap: 4 LT
Watercap: 2000 impgal
Cylindercount: three
Cylindersize: 16+1/2 x
Firearea: 23 sqft
Boilerpressure: 160 psi
Tubearea: 654.24 sqft
Fireboxarea: 124 sqft
Totalsurface: 1252.974 sqft
Fluearea: 280.6 sqft
Superheaterarea: 194.13 sqft
Superheatertype: Schmidt
Tractiveeffort: 22940 lbf
Valvegear: Stephenson
Operator: North Eastern Railway, London and North Eastern Railway
Retiredate: 1931-1936
Disposition: All rebuilt to LNER Class A8
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The North Eastern Railway Class D (later London and North Eastern Railway (LNER) Class H1) was a class of 4-4-4T three-cylinder side tank steam locomotive designed by Vincent Raven in 1913. They were used for rural passenger services. Forty five were built in total; a first batch of twenty, then a further twenty five after the War. Between 1931 and 1936, all of the LNER H1 class were rebuilt with a 4-6-2T wheel layout and re-classified as A8. They were scrapped between 1957 and 1960.