British Rail 10100
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| Power type | Diesel |
|---|---|
| Builder | LMS at Derby |
| Build date | 1950 |
| AAR wheel arr. | 4-8 4 (2 D 2) as built (modified 4-4-4-4) |
| Wheel diameter | driving: 4 ft 3 in pony: 3 ft 3 in |
| Wheelbase | 41 ft 4 in |
| Length | 50 ft |
| Width | 9 ft |
| Height | 13 ft |
| Total weight | 120 tonnes |
| Fuel capacity | 720 gal (3,270 L) |
| Prime mover | main: 4 x Paxman 12RPH aux: 2 x AEC 6 cylinder |
| Transmission | Vulcan Sinclair SCRD fluid |
| Top speed | 135 km/h (84 mph) |
| Power output | 2,400 hp (1.79 MW) |
| Tractive effort | 25,000 1bf (111 kN) cylindersize=7 in dia ×7¾ in stroke |
| Locomotive brakes | Vacuum |
| Career | British Railways |
| Nicknames | Fell locomotive |
| Retired | 1958 |
British Railways 10100 was an unusual experimental diesel locomotive known informally as 'The Fell Diesel'. It was the joint production of Davey Paxman & Co, Shell Refining & Marketing Co & Lt-Col LFR Fell, built for them by the LMS 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.
Using differentials 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 York Railway Museum).
It was withdrawn after a serious fire at Manchester. British Railways sold it to BTC in 1955 for whom it remained in service until 1958 it was scrapped at BR Derby Works in June 1960.It was allocated to Derby.
[edit] Additional specifications
- Min curve negotiable: 5 chains (101 m)
- Sanding equipment: Not fitted
- Heating type: Steam
- Multiple coupling restriction: Not fitted
- Cooling water capacity: 60 imp gal (370 L)
- Boiler water capacity: 500 imp gal (3110 L)
[edit] Reference
- Bentley, C., (1997) British Railways Operating History: Volume one, 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
