LMS 6399 Fury
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| Type and origin | |
|---|---|
| Power type | Steam |
| Builder | North British Locomotive Co. |
| Serial number | 23890 |
| Build date | 1929 |
| Specifications | |
|---|---|
| Configuration: |
|
| • Whyte | 4-6-0 |
| • UIC | 2′C h3 |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) standard gauge |
| Leading dia. | 3 ft 3 1⁄2 in (1.003 m) |
| Driver dia. | 6 ft 9 in (2.057 m) |
| Length | 64 ft 2 3⁄4 in (19.58 m) |
| Loco weight | 87.10 long tons (88.50 t; 97.55 short tons) |
| Fuel type | Coal |
| Fuel capacity | 5.5 long tons (5.6 t; 6.2 short tons) |
| Water cap | 3,500 imp gal (16,000 l) |
| Firebox: • Firegrate area |
28 sq ft (2.6 m2) |
| Boiler pressure | 1,400–1,800 psi (9.65–12.41 MPa) (HP boiler), 900 psi (6.21 MPa) (HP drum), 250 psi (1.72 MPa) (LP boiler) |
| Heating surface: • Tubes |
1,335 sq ft (124.0 m2) |
| • Firebox | 218 sq ft (20.3 m2) |
| Superheater: |
|
| • Heating area |
|
| Cylinders | Three: 1 HP inside, 2 LP outside |
| High-pressure cylinder | 11 1⁄2 in × 26 in (292 mm × 660 mm) |
| Low-pressure cylinder | 18 in × 26 in (457 mm × 660 mm) |
| Career | |
|---|---|
| Operators | London, Midland and Scottish Railway |
| Numbers | 6399 |
| Official name | Fury |
| Disposition | Rebuilt in 1935 as Rebuilt Royal Scot class no. 6170 British Legion |
The London Midland and Scottish Railway (LMS) No. 6399 Fury was an unsuccessful British experimental express passenger locomotive. The intention was to save fuel by using high-pressure steam, which is thermodynamically more efficient than low-pressure steam.
Built in 1929 by the NBL (North British Locomotive Company) in Glasgow, it was one of a number of steam locomotives built around the world in the search for "Superpower steam". The locomotive was a joint venture between the London, Midland and Scottish Railway (LMS), with Henry Fowler as Chief Mechanical Engineer (C.M.E.) and The Superheater Company with the latter having responsibility for constructing the complex, 3 stage Schmidt-based boiler. The LMS provided a Royal Scot frame and running gear. For the complex boiler, John Brown & Company of Sheffield forged the special nickel-steel alloy high pressure drum and many boiler fittings were imported from Germany but otherwise all manufacture was carried out by NBL.
A 3-cylindered semi-compound compound locomotive, it had one high-pressure cylinder between the frames (11.5 inch bore) and two larger low-pressure outside cylinders (18 inch bore). The Schmidt steam-raising boiler was a 3-stage unit. The primary generator was a fully sealed ultra-high-pressure circuit working between 1400 and 1800 psi (9.7 to 12.4 MPa), filled with distilled water that transferred heat from the firebox to the high-pressure drum. This raised high-pressure steam at 900 psi (6.2 MPa) which was taken to power the cylinders and also recirculate pure water. The third steam raising unit was a relatively conventional locomotive fire tube boiler operating at 250 psi (1.7 MPa) heated by combustion gases from the coal fire. The engine was technically an "ultra-high pressure, semi-compound steam locomotive". It was given the LMS number 6399 and then inherited the name Fury from LMS 6138, which had itself been renamed in October 1929.
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Wikipedia