British Rail Class 101
The British Rail Classes 101 and 102 diesel multiple units were built by Metro-Cammell at Washwood Heath in Birmingham, England from 1956 to 1959, following construction of a series of prototype units. These classes proved to be some of the most successful and longest-lived of BR's First Generation DMUs, second in longevity only to the Class 121, with the final five units being withdrawn on 24 December 2003. The oldest set was, by then, just over 47 years old.
|British Rail Classes 101 and 102|
Class 101 L832 at Reading in 1989
Interior of 101654
|Family name||First generation|
|Replaced||Steam locomotives and carriages|
|Number built||Class 101: 527 (DMCL: 97, DMBS: 217, DTCL: 120, TSL: 41, TSLRB: 6, TCL: 18, TBSL: 28)|
Class 102: 106 (DMCL: 53, TCL: 53)
|Number preserved||41 cars|
|Formation||2-, 3-, or 4-car sets|
|Car length||57 ft 0 in (17.37 m)|
|Width||9 ft 3 in (2.82 m)|
|Height||3.77 m (12 ft 4 in)|
|Maximum speed||70 mph (113 km/h)|
|Weight||32.5 tonnes (32.0 long tons; 35.8 short tons) (powered),|
25 tonnes (25 long tons; 28 short tons) (unpowered)
|Prime mover(s)||Two BUT (AEC or Leyland) 6-cylinder diesels|
|Power output||150 bhp (112 kW) each engine|
|Transmission||Mechanical: 4-speed epicyclic gearbox|
|Coupling system||Screw-link couplings, British Standard gangways|
|Multiple working||■ Blue Square|
|Track gauge||4 ft 8 1⁄2 in (1,435 mm)|
Class 101 DMUs were used across much of the British Rail network (with the notable exception of the Southern Region - apart from some inter-regional workings). Notable concentration of services included:
- East of Scotland (to/from Edinburgh Waverley)
- West Midlands
- West Yorkshire
Accidents and incidents
On 16 February 1977, an express passenger train hauled by Class 55 locomotive 55 008 collided with a Class 101 diesel multiple unit operating an empty stock train after failing to stop at Darlington. One of the vehicles of the DMU overturned. The guard of the express was slightly injured. The cause of the accident was that the brakes on the carriages of the express had become isolated whilst the train was moving in a freak event. The train had struck an object on the track, which had caused a traction motor cover to come lose. This struck the handle of the brake isolating cock, closing it and thus separating the brakes between the locomotive and train.
Original TOPS classes
When TOPS was originally introduced only the Driving Motor Brake Second (DMBS) and the Driving Motor Composite (with Lavatory) (DMCL) were classified as Class 101 (AEC engines) or Class 102 (Leyland engines). The Driving Trailer Composite (with Lavatory) (DTCL) were either Class 144 or Class 147. The Trailer Seconds (with Lavatory) (TSL) were Class 162, the Trailer Brake Second (with Lavatory) (TBSL) were Class 168 and the Trailer Composite (with Lavatory) (TCL) were Class 171. Later all the cars were reclassified, becoming Class 101.
|Type||Class||Seating||Weight||Lot No||Diagram||Formation (Original)||Year built|
|50138–50151||DMC(L)||101/1||12F 45S (2/2)||32t||30249||BR 618||4-car||1956|
|50158–50163||DMC(L)||101/1||12F 53S||32t||30253||BR 620||Power-Twin||1956/7|
|50168–50171||DMC(L)||101/1||12F 53S||32t||30255||BR 620||Power-Twin||1956/7|
|50172–50197||DMC(L)||101/1||12F 53S||32t||30256||BR 620||4-car||1957|
|50234–50245||DMC(L)||101/1||12F 45S||32t||30263||BR 619||4-car||1957|
|50260–50269||DMC(L)||101/1||12f 53S||32t||30267||BR 621||Power-Twin||1957|
|50293–50296||DMBS||101/2||52S||32t||30270||BR 523||Power/Trailer 2-car||1957|
|50321–50338||DMC(L)||101/1||12F + 53S||32t||30276||BR 621||3-car||1958|
|50745–50747||DMC(L)||101/1||12F + 53S||32t||30271||BR 621||3-car||1957|
|50748–50751||DMC(L)||101/1||12F + 53S||32t||30271||BR 621||4-car||1957|
|51174–51203||DMBS||101/1||52S||32t||30467||BR 523||Power/Trailer 2-car||1958|
|51204–51223||DMBS||101/2||52S||32t||30467||BR 523||Power/Trailer 2-car||1958|
|51224–51253||DMBS||101/2||52S||32t||30467||BR 523||Power/Trailer 2-car||1958|
|51425–51434||DMBS||102/2||52S||32t||30500||BR 523||Power/Trailer 2-car||1959|
|56050–56061||DTC(L)||144||12F+53S||25t||30260||BR 630||Power/Trailer 2-car||1957|
|56062–56085||DTC(L)||144||12F+53S||25t||30262||BR 630||Power/Trailer 2-car||1957|
|56086–56089||DTC(L)||144||12F+52S||25t||30272||BR 630||Power/Trailer 2-car||1957|
|56218–56220||DTC(L)||144||12F+45S||25t||30340||BR 629||Power/Trailer 2-car||1957|
|56332–56361||DTC(L)||144||12F+53S||25t||30340||BR 630||Power/Trailer 2-car||1957|
|56362–56381||DTC(L)||144||12F+53S||25t||30468||BR 630||Power/Trailer 2-car||1957|
|56382–56411||DTC(L)||144||12F+53S||25t||30468||BR 630||Power/Trailer 2-car||1957|
The Class 101 was one of the largest classes of first-generation DMUs and, partly thanks to their relatively late withdrawal from revenue-earning service, numerous vehicles have been preserved on heritage railways, including the Great Central Railway and the North Yorkshire Moors Railway. There are only three centre cars preserved: at the Ecclesbourne Valley Railway, North Yorkshire Moors Railway and Mid-Norfolk Railway. No Trailer Brake Seconds were saved.
|Set number||Vehicle numbers||Livery||Location||Notes|
|101685||50164||59539||50160||BR Green||North Yorkshire Moors Railway||Last to be withdrawn, operational|
|960992||-||-||50193||BR Blue and Grey||Great Central Railway||Stored.|
|-||50203||-||50266||BR Blue||Great Central Railway||Operational|
|101680||50204||-||51511||BR Green||North Yorkshire Moors Railway||Stored|
|Iris 2||50222||-||50338||BR Green||Barry Island Railway||Operational|
|101692||50253||59303 (TSL)||50170||BR Green||Ecclesbourne Valley Railway||Operational|
|-||50256||-||56343(DTCL)||BR Blue||Wensleydale Railway||Stored|
|-||51187||-||51512||BR Green||Cambrian Heritage Railways||Under repair|
|-||51188||-||51505||BR Blue||Ecclesbourne Valley Railway||Operational (51188 on loan to North Norfolk Railway for 2018/19)|
|-||51189||-||51803||BR Green||Keighley and Worth Valley Railway||Operational|
|-||51192||-||56352(DTCL)||BR Green||North Norfolk Railway||Operational|
|-||51205||-||56055(DTCL)||BR Green||Cambrian Heritage Railways||Operational|
|101678||51210||-||50746||BR Blue / BR Blue and Grey||Wensleydale Railway||Last to be withdrawn, under restoration|
|-||51213||-||56358(DTCL)||BR Blue and Grey / BR Blue||East Anglian Railway Museum||Operational|
|101695||51226||-||51499||BR Green||Mid Norfolk Railway||Operational|
|-||51228||-||56062(DTCL)||BR Green||North Norfolk Railway||Operational|
|960993||51427||59575 (Class 111)||50321||BR Green||Great Central Railway||Operational|
|L836||51434(DMBC)||59117||51503||BR Blue and Grey||Mid Norfolk Railway||Operational (Currently as 2-car only)|
|-||-||-||56342(DTCL)||BR Blue and Grey||Great Central Railway||Under restoration|
|-||-||-||56347(DTCL)||BR Green||Mid Norfolk Railway||Operational|
|-||-||-||56356(DTCL)||Non Standard Green and Cream||Barry Island Railway||Stored|
|-||-||-||56408(DTCL)||SR Malachite Green||Spa Valley Railway||Operational|
|-||50211||-||-||Regional Railways||Private Site||Stored, cab only|
|-||-||-||50269||Regional Railways||Private Site||Stored, cab only|
|-||51177||-||-||BR Blue||Private Site, Ashton-under-Lyne, Lancashire||Cab only, used as a store room.|
The Class 101 DMUs were the basis for the character Daisy the Diesel Railcar in The Railway Series books written by the Rev. W. Awdry, and the spinoff television series Thomas the Tank Engine and Friends, although Daisy is a single car.
- Fox 1987, pp. 8, 10-11, 15-16, 26, 28-33, 35-36.
- "CLASS 101, 102, 144, 147, 162, 164, 168, 171". The RailwayCentre.Com. Archived from the original on 7 February 2009.
- "Report on the collision that occurred on 16th February 1977 at Darlington in the Eastern Region of British Railways" (PDF). Department of Transport. 13 July 1978. Retrieved 2 August 2019.
- Fox, Peter (1987). Multiple Unit Pocket Book. British Railways Pocket Book No.2 (Summer/Autumn 1987 ed.). Platform 5 Publishing Ltd. ISBN 0906579740. OCLC 613347580.
- Fox, Peter; Webster, Neil (July 1982). Multiple Unit Pocket Book. Sheffield: Platform 5 Publications. ISBN 0-906579-26-0.
- Golding, Brian. A Pictorial Record of British Railways Diesel Multiple Units.
- Haresnape, Brian. British Rail Fleet Survey 8: Diesel Multiple Units—The First Generation.
- Marsden, Colin J. Motive Power Recognition: 3 DMUs.
- Robertson, Kevin. British Railway Pictorial: First Generation DMUs.