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Caledonian classes 294 and 711 “Jumbo”
Great Britain | 1883 | 244 produced
British Railways Class 294 No. 57361 in August 1948 at Polmadie Depot
British Railways Class 294 No. 57361 in August 1948 at Polmadie Depot
Ben Brooksbank / Ex-Caledonian 'Jumbo' 2F 0-6-0 at Polmadie Depot

After Dugald Drummond became chief engineer of the Caledonian, he introduced a new class of 0-6-0 goods locomotives. As a basis he used the class D, which he had built a few years earlier during his appointment at North British. Compared to this, the new locomotives were slightly heavier with a larger boiler and larger cylinders. They were nicknamed “Jumbos” or simply “Standard Goods”.

After Drummond left the Caledonian, his successors Smellie, Lambie and McIntosh continued to build these locomotives. While the 161 locomotives built from 1883 were known as class 294, the 83 locomotives built from 1890 by Hugh Smellie and his successors are known as class 711. The latter received a Westinghouse brake so that they could also be used in front of passenger trains. All 244 came to the LMS and the first was not decommissioned until 1946. A total of 238 were taken over by British Railways and decommissioned by 1962.

Variant294711
General
Built1883-18901890-1897
ManufacturerSt. Rollox
Axle config0-6-0 (Six-coupled) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase16 ft 3 in
Fixed wheelbase16 ft 3 in
Service weight92,512 lbs89,936 lbs
Adhesive weight92,512 lbs89,936 lbs
Total weight172,816 lbs168,336 lbs
Axle load30,912 lbs30,016 lbs
Water capacity3,411 us gal
Fuel capacity11,200 lbs (coal)
Power
Power sourcesteam
Estimated power550 hp (410 kW)
Optimal speed20 mph
Top speed50 mph
Starting effort17,901 lbf
Power Plant
Driver diameter60 in
Boiler pressure150 psi
Expansion typesimple
Cylinderstwo, 18 x 26 in
Boiler
Grate area19.5 sq ft
Firebox area112.4 sq ft
Tube heating area1,056.6 sq ft
Evaporative heating area1,211 sq ft1,169 sq ft
Total heating area1,211 sq ft1,169 sq ft
Calculated Values
steam locomotive
freight
Dugald Drummond
Hugh Smellie
last changed: 01/2024
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