British Rail 10800

From Wikipedia, the free encyclopedia
Jump to: navigation, search
British Railways 10800
Rugby station geograph-2389743-by-Ben-Brooksbank.jpg
10800 on the down main platform at Rugby
Type and origin
Power type Diesel-electric
Builder North British Locomotive Company
Serial number 26413
Build date 1950
 • Whyte Bo-Bo
 • AAR B-B
 • UIC Bo-Bo
Gauge 4 ft 8 12 in (1,435 mm) standard gauge
Wheel diameter 3 ft 6 in (1.067 m)
Minimum curve 3.75 chains (247.50 ft; 75.44 m)
Wheelbase 31 ft 0 in (9.45 m)
Length 41 ft 10 12 in (12.76 m)
Width 9 ft 2 in (2.79 m)
Height 12 ft 9 12 in (3.90 m)
Loco weight 69.80 long tons (70.92 t; 78.18 short tons)
Fuel capacity 300 imp gal (1,400 l; 360 US gal)
Coolant cap. 85 imp gal (390 l; 102 US gal)
Water cap 90 imp gal (410 l; 110 US gal)
Prime mover Paxman 16RPHXL Series 2
rebuilt: Maybach MD655
Generator DC
Traction motors BTH 159, DC, four (4) off
Cylinder size 7 in × 7 34 in (177.80 mm × 196.85 mm)
rebuilt: 7 14 in × 8 34 in (184.15 mm × 222.25 mm)
Transmission Diesel electric
MU working Not fitted
Train heating Clarkson steam generator
Loco brake Brakeforce: 45 long tons-force (450 kN)
Train brakes Vacuum
Performance figures
Maximum speed 70 mph (110 km/h)
Power output 827 hp (617 kW)
rebuilt: 1,400 hp (1,000 kW)
Tractive effort 34,500 lbf (153.5 kN)
Operators British Railways
Power class 3MT; later: Type 1
Numbers 10800
Axle load class Route availability: 4
Retired August 1959
Disposition Sold Brush Traction, rebuilt into research locomotive Hawk, retired 1968, cannibalised 1972–1976, scrapped 1976.

British Railways 10800 was a diesel locomotive built by the North British Locomotive Company for British Railways in 1950. It had been ordered by the London, Midland and Scottish Railway in 1946 but did not appear until after the 1948 nationalisation of the railways.

Design was by George Ivatt and the locomotive was intended as a possible replacement for steam locomotives on secondary and branch lines. The single-cab layout (long bonnet forward) gave the driver a poor view of the road ahead. The view was no worse than a steam locomotive's, so it would have been considered acceptable at the time.

During its brief time on the Southern Region between 1952 and 1954, 10800 gained the nickname 'The Wonder Engine', from the locomotive department's daily query, 'I wonder if it will go today'.[1]


Due to having been ordered by the LMS before the creation of British Railways (BR), 10800 became the first BR mixed-traffic Diesel-Electric locomotive when it was delivered in 1950. Operationally it was successful enough for BR to order two classes of 54 similar locomotives in 1955[2] although these, destined to become BR Class 15 and BR Class 16, used the improved YHXL engine.

Extra Information[edit]


In 1961 or 1962 (sources differ) No. 10800 was bought by Brush Traction and rebuilt for experiments in a.c. power transmission. Brush named the locomotive "Hawk".

  • Main alternator type: Brush
  • Aux alternator type: Brush

It was used until 1968, and slowly stripped for parts from April 1972, until it was finally scrapped at Brush Traction, Loughborough in 1976.


  1. ^ "Ivatt 800hp Diesel Electric Locomotive". Southern E-Group. 10 August 2004. 
  2. ^ Carr, Richard (29 October 2008). "Paxman and Diesel Rail Traction". Richard Carr's Paxman History Pages. Retrieved 2 December 2008. 
  3. ^ "Clarkson Thimble Tube Boiler Co". Grace's Guide to British Industrial History. 4 September 2013. 

Further reading[edit]

External links[edit]