British Rail 10100
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| British Rail 10100 | |
| Also called: | Fell locomotive |
|---|---|
| Builder: | LMS at Derby |
| Introduced: | 1950 |
| Early numbers: | 10100 |
| Engine: | 4 x Paxman 12RPH |
| Transmission: | Diesel Mechanical |
| Wheel layout: | 4-8-4 (2 D 2) |
| Wheel diameter: | 51 in (1,295 mm) driving, 39 in (991 mm) pony |
| Minimum curve: | 5 chains (100 m) |
| Brakes: | Vacuum |
| Brake force: | 38 LTf (380 kN) |
| Wheelbase: | 41 ft 4 in (12.6 m) |
| Length: | 50 ft 0 in (15.2 m) |
| Width: | 9 ft 0 in (2.7 m) |
| Height: | 13 ft 0 in (4.0 m) |
| Weight: | 120 long tons (120 t) |
| Maximum speed: | 84 mph (135 km/h) |
| Engine power: | 2,400 bhp (1,800 kW) |
| Maximum TE: | 25,000 lbf (111 kN) |
| Heating type: | Steam |
| Fuel capacity: | 720 imp gal (3,300 l) |
British Railways 10100 was an unusual experimental diesel locomotive known informally as The Fell Diesel Locomotive (after Lt. Col. L.F.R. Fell, who was one of the designers). It was the joint production of Davey Paxman & Co, Shell Refining & Marketing Co and Lt-Col L.F.R. Fell, built for them by the London, Midland and Scottish Railway at Derby. Sir Harry Ricardo was also involved. By the time it emerged in 1950, nationalisation had taken place and it carried British Railways livery. The locomotive had six diesel engines, four of them used for traction. The auxiliary engines drove the pressure-chargers for the main engines and the purpose of this arrangement was to enable the main engines to deliver very high torque at low crankshaft speed.
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[edit] Additional specifications
- Sanding equipment: Not fitted
- Cooling water capacity: 60 imp gal (370 L)
- Boiler water capacity: 500 imp gal (3110 L)
- Date withdrawn: 1958
- Transmission: Vulcan Sinclair SCRD fluid
- Cylinder size: 7 in dia ×7¾ in stroke
- Auxiliary power: 2 x AEC 6 cylinder
[edit] Transmission
Using differential gearing to transmit the power, it was originally built as a 4-8-4 with the coupling rods connecting the centre four pairs of driving wheels. It was modified to 4-4+4-4. At 2000 hp it was the most powerful of BR's locomotives at the time. From 1951 it worked the expresses from Manchester to London, proving some 25% more powerful than 5XP 4-6-0s. While the mechanical transmission made it much lighter than the diesel-electric locomotives, its complicated mechanism made it difficult to maintain (a working model of the transmission is on display at the National Railway Museum, York).
[edit] Withdrawal
It was withdrawn after a serious fire at Manchester. British Railways sold it to the British Transport Commission in 1955 for whom it remained in service until 1958 when it was withdawn after sustaining accidental damage to the main gearbox. It was allocated to Derby and it was broken up at BR Derby Works in June 1960.
[edit] References
- Bentley, C. (1997). British Railways Operating History: Volume 1, The Peak District. Carnarvon: XPress Publishing.
[edit] External links
- Photo of 'The Fell Locomotive - 10100'
- Richard Carr's Paxman History Pages
- Photo of Lt. Col. L.F.R. Fell with Sir Harry Ricardo
- Technical details of the locomotive
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