British Rail DP1
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| English Electric DELTIC prototype | |
| |
| The nose end of DP1 at Locomotion | |
| Power type | Diesel-electric |
|---|---|
| Builder | English Electric at Dick, Kerr Works, Preston |
| Serial number | EE: 2003 |
| Build date | 1955 |
| UIC classification | Co'Co' |
| Gauge | Lua error in package.lua at line 80: module 'Module:Track gauge/data' not found. |
| Wheel diameter | 3 ft 7 in (1.09 m) |
| Length | 66 ft |
| Locomotive weight | 106 long tons (108 t) |
| Prime mover | Napier Deltic D18-25 (2 off) |
| Traction motors | EE 526/A, 6 off |
| Cylinders | 18 × 2 |
| Transmission | Diesel Electric |
| Top speed | 90 mph (140 km/h) 106 mph (171 km/h) from 1956 |
| Power output | 3,300 hp (2,500 kW) |
| Tractive effort | 90 mph gearing: 60,000 lbf (266.89 kN) 106 mph gearing: 52,500 lbf (233.53 kN) |
| Train heating | Stone-Vapor/Clarkson steam generator |
| Career | British Railways |
| Power class | Type 5 |
| Number | DP1 |
| Official name | DELTIC |
| Retired | March 1961 |
| Disposition | to Science Museum, London, April 1963 |
DP1, or Prototype Deltic is a demonstrator locomotive built by English Electric in 1955. This locomotive resulted in 22 similar locomotives being ordered by British Rail, which became their Class 55.
British Rail DP1 Media
English Electric Deltic prototype
DP1 on test at Newcastle Central in 1959
DP1 at the Ribble Steam Railway in 2015
A view inside the number 2 cab of the English Electric prototype 'Deltic' diesel locomotive.
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