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Great Eastern classes S46 “Claud Hamilton”, D56 “Belpaire Claud” and H88 “Super Claud”
London & North Eastern classes D14, D15 and D16
Great Britain | 1900 | 121 produced
H88 or LNER D16/3 No. 62527 in BR livery in August 1949 at Cambridge depot
H88 or LNER D16/3 No. 62527 in BR livery in August 1949 at Cambridge depot
Ben Brooksbank

The Class S46 “Claud Hamilton” designated 4-4-0 express locomotives of the Great Eastern Railway, which were named after its chairman. Although James Holden was actually responsible for the design, he was out of the country at the time and handed over the actual work to Frederick Vernon Russell.

The 41 S46s built between 1900 and 1903 were all built with oil firing. The oil came as a waste product from the GER gasworks. Other features included the variable blast pipe, a power reverser and a tender with scooping device. Between 1903 and 1911 a total of 70 D56 “Belpaire Claud” were built, which had a Belpaire firebox. The first ten were again built with oil firing, which was later replaced with coal firing in these and all S46s. The last four D56s were already delivered with two different superheaters

In 1923, ten H88 “Super Claud” models followed, which had a superheated boiler. They were designed by Alfred John Hill and were taken over directly by the LNER. The predecessors also received the same boiler. The LNER designated the three classes as D14, D15 and D16. As early as 1911, they were replaced in front of the heaviest express trains by the 4-6-0 S69, which in turn was based on the Claud. The services now increasingly took place in front of passenger and freight trains. The locomotives were withdrawn between 1948 and 1960 and scrapped without exception.

VariantS46 Claud HamiltonD56 Belpaire ClaudD56 Super Claud
General
Built1900-19031903-19111923
ManufacturerStratford
Axle config4-4-0 (American) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase23 ft 6 in
Fixed wheelbase9 ft
Service weight113,008 lbs115,808 lbs121,859 lbs
Adhesive weight74,480 lbs77,168 lbs79,970 lbs
Total weight200,930 lbs203,728 lbs209,779 lbs
Axle load41,000 lbs39,144 lbs40,488 lbs
Water capacity4,143 us gal
Fuel capacity859 us gal (oil)11,200 lbs (coal)
Power
Power sourcesteam
Estimated power800 hp (597 kW)825 hp (615 kW)1,000 hp (746 kW)
Optimal speed30 mph31 mph37 mph
Starting effort17,096 lbf
Power Plant
Driver diameter84 in
Boiler pressure180 psi
Expansion typesimple
Cylinderstwo, 19 x 26 in
Boiler
Grate area21.3 sq ft21.6 sq ft
Firebox area114 sq ft117.7 sq ft
Tube heating area1,517 sq ft1,589.3 sq ft1,157.3 sq ft
Evaporative heating area1,631 sq ft1,707 sq ft1,275 sq ft
Superheater area226 sq ft
Total heating area1,631 sq ft1,707 sq ft1,501 sq ft
Calculated Values
steam locomotive
express
James Holden
Alfred John Hill
last changed: 12/2023
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