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4-4-4 Tank
H1
H2

The NER Raven H1 4-4-4T Locomotives

Raven Class H1 4-4-4T No. 2150 (D.Hey)

Raven introduced these locomotives in 1913 to haul light express passenger trains over short distances. After the initial order of 20 locomotives, a second order was placed in 1914 but was cancelled due to World War I. 25 more engines were built between 1920 and 1922.

The H1s mainly worked the coastal trains between Saltburn and Scarborough, as well as fast residential services in the Leeds - Harrogate area. Despite their speed, power, and compactness; the H1s were never a very popular class.

Raven Class H1 4-4-4T Locomotive

The Great Central Railway (GCR) chose a 4-4-2 design and then the A5 4-6-2 design, for similar duties. After Grouping, the LNER worked the A5s alongside the H1s. It is thought that this led to direct comparisons resulting in the decision to rebuild all of the H1s as A8s. Rebuilding started in 1931, and was completed by 1936.

Technical Details

Cylinders (x3): 16.5x26in.
Motion: Stephenson
Boiler: Diameter (max): 4ft 9in
Length: 10ft
Heating Surface: Total: 1252.974 sq.ft.
Firebox: 124 sq.ft.
Tubes: 654.24 sq.ft.
Flues: 280.6 sq.ft.
Superheater: 194.134 sq.ft.
Grate Area: 23 sq.ft.
Wheels: Leading: 3ft 1.25in
Wheels: Coupled: 5ft 9in
Trailing: 3ft 1.25in
Tractive Effort (85%): 22,940lb
Length: 42ft 10in
Total Wheelbase: 34ft 6in
Weight: (full) 87t 7cwt
Coal Capacity: 4 tons 0cwt
Water Capacity: 2000 gallons

Preservation

All of the H1s were rebuilt as Class A8s, and none survived into preservation.

Models

DJH produce a whitemetal kit of the H1 for OO gauge (4mm scale).

Acknowledgements

Thank you to David Hey for the photograph of H1 No. 2150.



 
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