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British Rail Class 15

Sole surviving Class 15 no D8233 seen at Baron Street Loco Shed, East Lancashire Railway, February 2006
Also called: BTH Type 1
Builder: BTH / Clayton
Years built: 1957 - 1961
Early numbers: D8200-D8243
Replaced by: Class 17
Engine: Paxman 16YHXL
Transmission: Diesel Electric
Wheel layout: Bo-Bo
Wheel diameter: 39 in (991 mm)
Minimum curve: 3. This article is about the present East Lancashire Railway for the previous incarnation see East Lancashire Railway 1844-1859 Overview Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Manufacturing (from Latin manu factura, "making by hand" is the use of tools and labor to make things for use or sale Clayton Equipment Company Ltd, now known simply as Clayton Equipment Ltd or CEC and CEL, is a Locomotive construction company that specialises Year 1957 ( MCMLVII) was a Common year starting on Tuesday (link displays the 1957 Gregorian calendar) Year 1961 ( MCMLXI) was a Common year starting on Sunday (link will display full calendar of the Gregorian calendar. The Clayton Type 1 (later known as Class 17) was a class of Diesel locomotive operated by British Railways. An engine is a mechanical device that produces some form of output from a given input Paxman is a major British brand of Diesel engines Ownership has varied greatly since the company's formation in 1865 the brand is now owned by MAN AG, The UIC classification is a comprehensive system for describing the Wheel arrangement of Locomotives Multiple units and Trams It is Inches redirects here To see the Les Savy Fav album see Inches. The Millimetre ( American spelling: millimeter, symbol mm) is a unit of Length in the Metric system, equal to 5 chains (70 m)
Brakes: Vacuum
Brake force: 31 LTf (310 kN)
Wheelbase: 31 ft 0 in (9. A chain is a unit of Length; it measures 66 feet or 22 yards (20 Brakes are used on the vehicles of railway Trains to slow them or to keep them standing when parked Units of mass There are three similar units of Mass called the ton: Long ton (simply ton in countries such as the United In both road and rail Vehicles the wheelbase is the distance between the centers of the front and rear wheels 4 m)
Length: 42 ft 0 in (12. 8 m)
Width: 9 ft 2 in (2. 8 m)
Height: 12 ft 6 in (3. 8 m)
Weight: 69 long tons (70 t)
Maximum speed: 60 mph (97 km/h)
Engine power: 800 bhp (597 kW)
Rail power: 627 bhp (468 kW)
Maximum TE: 37,500 lbf (167 kN)
Multiple working: Blue Star
Fuel capacity: 400 imp gal (1,800 l)
Route availability: 4

The British Rail Class 15 diesel locomotives, also known as the BTH Type 1, were designed by British Thomson-Houston, and built by the Yorkshire Engine Company and the Clayton Equipment Company, between 1957 and 1961. Multiple working is a term used on the UK rail network to describe the practice of having more than one diesel or electric locomotive hauling a train under the control of one driver A Diesel locomotive is a type of Railroad Locomotive in which the prime mover is a Diesel engine. The Yorkshire Engine Company (YEC was a small independent Locomotive manufacturer in Sheffield, England. Clayton Equipment Company Ltd, now known simply as Clayton Equipment Ltd or CEC and CEL, is a Locomotive construction company that specialises

Contents

Design History

Following the British Railways Modernisation Plan, ten of the class were ordered for evaluation under the 'pilot scheme'. Like other locomotives designed to the 'Type 1' specification, they were intended for use on local freight and empty coaching stock trains. The design and manufacture was a collaboration between several companies. BTH (the main contractor) provided electrical equipment, Paxman supplied the power units, and Clayton supplied bogies and superstructure, with the frame construction and final assembly taking place at Yorkshire Engine's Sheffield works. Paxman is a major British brand of Diesel engines Ownership has varied greatly since the company's formation in 1865 the brand is now owned by MAN AG, Sheffield ( is a city and Metropolitan borough in South Yorkshire, England These ten locomotives, numbered D8200-D8209, entered service between November 1957 and November 1958.

The design showed sufficient promise for a repeat order for 34 more locomotives to be placed soon afterwards. These locomotives, numbered D8210-D8243 and built by Clayton at Hatton, Derbyshire, were delivered between October 1959 and February 1961. Hatton is a Village in South Derbyshire, England. It is located 6km north of Burton upon Trent, 20km west of Derby and 40km east

Technical

Working Life

The first ten locomotives were delivered to the London Midland Region's Devons Road depot in Bow, East London, where they were evaluated against the contemporary North British Type 1 and English Electric Type 1 designs. Paxman is a major British brand of Diesel engines Ownership has varied greatly since the company's formation in 1865 the brand is now owned by MAN AG, For the modern day train operating company see London Midland The London Midland Region (LMR was one of the six regions created on the formation of the nationalised Motive power depot, usually abbreviated to MPD, is a name given to places where Locomotives are stored when not being used and also repaired and maintained Bow is an area of East London England, in the London Borough of Tower Hamlets. The North British Type 1 (later known as Class 16) was a type of Diesel locomotive ordered under British Railways' 1955 Modernisation Plan. The British Rail Class 20, otherwise known as an English Electric Type 1, is a class of diesel electric Locomotive. Soon, however, the entire class was allocated to depots on the Eastern Region, where they remained until withdrawal. The The second block of ten was originally allocated to March depot in East Anglia, however due to the Clean Air Act 1956 the locomotives were quickly re-allocated to East London, allowing the replacement of steam locomotives in that area. March is a Fenland market town in the Isle of Ely area of Cambridgeshire, England. East Anglia is often used as a shorthand for the Kingdom of the East Angles. The Clean Air Act 1956 was an Act of the Parliament of the United Kingdom which responded to London 's Great Smog of 1952. Thereafter, the type was allocated exclusively to Stratford, Finsbury Park and Ipswich depots.

The class were troubled by several reliability problems, notably with the engines which were found to require excessive maintenance. The layout, with a single cab positioned part-way down the body like a North American road-switcher, gave the crew poor forward visibility in both directions of travel, although this was initially tolerated as it was no worse than the visibility from a steam locomotive cab. A road switcher is a type of Railroad Locomotive used for delivering or picking up cars outside of a railroad yard Despite these problems the class were more successful than the contemporary Type 1 locomotives of Class 16 and the later Class 17. The North British Type 1 (later known as Class 16) was a type of Diesel locomotive ordered under British Railways' 1955 Modernisation Plan. The Clayton Type 1 (later known as Class 17) was a class of Diesel locomotive operated by British Railways.

With a decline in freight duties in the London area, and as a relatively small and non-standard class, the type was considered surplus to requirements by the late 1960s. All were withdrawn from capital stock between April 1968 and March 1971. All but four had been broken up for scrap by the end of 1972.

A Reprive

The four that survived were converted into non-powered electric train pre-heating units at Doncaster Works, these duties keeping the locomotives employed for another ten years, until they were again made redundant and withdrawn.

Original Number Departmental number Location Withdrawn Disposal
D8203 DB968003 Finsbury Park (FP) 1981 cut up 1981
D8233 DB968001 Finsbury Park (FP) 1982 preserved
D8237 DB968002 Finsbury Park (FP) 1982 cut up 1985
D8243 DB968000 Finsbury Park (FP) 1981 cut up 1990

Preservation

One of the former train heating units, D8233, was purchased for preservation in 1984 and is now the only survivor of the type. Scrap is a term used to describe Recyclable materials left over from every manner of product consumption such as parts of vehicles building supplies and surplus materials It was originally kept at the South Yorkshire Railway in Sheffield, moving in 1986 to the East Lancashire Railway, and in 1988 to the Mangapps Farm Railway, where it remained until 1993. This article is about the present East Lancashire Railway for the previous incarnation see East Lancashire Railway 1844-1859 Overview The Mangapps Railway Museum (previously Mangapps Farm Railway Museum is a Heritage railway located near Burnham-on-Crouch in Essex. D8233 then moved to Crewe following an agreement with the Waterman Heritage Trust. Since its initial preservation the locomotive had received little work apart from cosmetic attention. Some work was carried out by the Waterman Heritage Trust, however the locomotive's restoration remained dormant until the end of 2005, when a reformed owning group, alongside the WHT, agreed the time was right to accelerate the locomotive's return to service. With an active plan for work agreed, the locomotive returned to the East Lancashire Railway in February 2006, where its restoration to working order is now underway. This article is about the present East Lancashire Railway for the previous incarnation see East Lancashire Railway 1844-1859 Overview

Models

To date, no ready-to-run models of the Class 15 have been produced. However, Heljan have announced plans for a OO gauge ready-to-run model. Heljan A/S is a Danish Model railway company based in Søndersø.

Sources

External links

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