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<- 79750 | 79900 | 79901 ->

Vehicle 79900 / 975010


Derby Lightweight

BR Diagram 514

Builder: BR Derby Works
Type: Low Density
Length: 57ft
Coupling Code: Yellow Diamond
Coupling Type: Screw
Gangway Type: LMS
Engines: AEC 150hp
Transmission: Mechanical
Lot Number: 30380
Diagram: 514

Allocations

Jul-56 New to 1E (Bletchley)
4w/e 02/01/65 Transferred to 1C (Watford)
3w/e 31/01/65 Transferred to 1E (Bletchley)
3w/e 30/09/67 Transferred to 50A (York)
P10/67 To departmental stock 50A (York)
Dec-70 Listed at 55B (York)

The vehicle carried the following numbers:

79900 - original number
975010 - from Oct-67 (departmental stock)

Department Use as RDB975010

"Iris" Radio tests From 10/67 to 6/99.

Images:

DMU

Date: unknown

British Railways (Derby Lightweight) single unit (DMBS) railcar M79900 at Banbury Merton Street station with a service for Buckingham - c.1958. Remarkably this railcar survives to this day, having been rebuilt as test coach "Iris", based at Bletchley and numbered 975010 in the departmental series. Its last years of service were with the Research Centre at Derby where it was again repainted into lined green livery. It is now preserved at the Ecclesbourne Valley Railway. 53A Models of Hull Collection.

DMU

Date: unknown

975010 (ex-79900) in York roundhouse circa 1970, during its time as an ER route-learning vehicle. Tony Wilkins.

DMU

Date: unknown

975010 (ex-79900) in York roundhouse circa 1970, during its time as an ER route-learning vehicle. Tony Wilkins.

DMU

Date: 9th August 1970

975010 in York roundhouse, 9/8/70. David Mant.

DMU

Date: 24th September 1977

Test Car Iris 975010 at the Derby Technical Centre on the 24th September 1977. Chris Lings.

DMU

Date: 1st September 1979

Former Derby Lightweight single car 79900, departmental unit RDB975010 'Iris' seen at Derby Works in the company of a refurbished class 101 driving car on 1/Sep/1979. Robert Chilton.

DMU

Date: 22nd September 1979

The Railway Technical Center (Derby) liveried, Test Coach Iris RDB975010 (ex-Derby Lightweight unit M79900) on display at BREL Crewe Works, whilst in the background is a MK1 Sleeper Car. 22nd September 1979. Andrew J Crowther.

DMU

Date: 22nd September 1979

The side tells us this is 'Test Coach Iris', then numbered RDB 975010. The original M79900 is seen at Crewe. Robert Frise.

DMU

Date: 22nd September 1979

Railway Technical Centre, Derby, Test Coach Iris RDB975010 (ex-Derby Lightweight unit No. M79900) on display at BREL Crewe Works Open Day on 22nd September 1979. Between what I believe to be a Sleeper Coach and the unit can just be glimpsed 40102, whilst in the background is 24081. What a line up! Gordon Edgar.

DMU

Date: unknown

RDB975010 - Test Coach Iris - seen in the Derby Technical Centre. Date unknown. Tim Stubbs.

DMU

Date: unknown

Test Coach Iris at Orpington, date unknown. Note the large aerial mounted horizontally from the front. Stuart Pearce.

DMU

Date: 28th March 1982

975010 (Test Coach Iris) seen at Derby Research Centre on the 28th March 1982. Ian Francis.

DMU

Date: unknown

975010 Test Coach Iris seen at the Derby Railway Technical Centre. Date unknown. Tim Stubbs.

DMU

Date: unknown

975010 Test Coach Iris seen at the Derby Railway Technical Centre. Date unknown. Tim Stubbs.

DMU

Date: unknown

975010 Test Coach Iris seen at the Derby Railway Technical Centre. Date unknown. Tim Stubbs.

DMU

Date: unknown

Iris - 975010 - sits in Inverness station. Date unknown. Norman Smart.

DMU

Date: unknown

975010 (Iris) at the Railway Technical Centre, Derby, date unknown. In its latter days in traffic it was used sandwiched between two Class 101 power cars when the AEC engines were unserviceable. David Faircloth.

DMU

Date: unknown

975010 - Test Coach Iris - seen at Bletchley TMD circa 1986. Graham Baker.

DMU

Date: unknown

975010 at Bletchley TMD circa 1986. It's carrying CA, DY and RG shed stickers! Graham Baker.

DMU

Date: 16th January 1986

RDB 975010 'Iris' stabled at Dingwall on the 16th January 1986 while on RETB testing duties. Hamish Stevenson.

DMU

Date: unknown

Test Coach Iris 975010 seen at Crewe. Undated. The blue sticker in the centre cab window reads "The Orcadian" - a momento from it's time at Inverness. Andrew McConnell.

DMU

Date: 12th March 1988

975010 seen at the stops at Waterloo, 12/3/88. Iain Reid.

DMU

Date: 13th March 1988

975010 is in the platform at Bookham, 13/3/88. Iain Reid.

DMU

Date: 13th March 1988

975010 is in the platform at Bookham, 13/3/88. Iain Reid.

DMU

Date: 13th March 1988

975010 seen at Leatherhead, 13/3/88. Iain Reid.

DMU

Date: 8th May 1988

On a gloomy Sunday (8/5/88), Test Coach Iris is seen with a Class 47, thirty-seven redundant Mark 1s and a pair of Class 20s coming out of Corby tunnel. These trials were to do with communications in the Channel Tunnel. At this point Iris was being detached from the train. Mike Dean.

DMU

Date: 8th May 1988

975010 seen at Corby during radio communication trails, 8/5/88. Mike Dean.

DMU

Date: 8th May 1988

975010 seen at Corby during radio communication trails, 8/5/88 Mike Dean.

DMU

Date: 8th May 1988

975010 seen at Corby during radio communication trails, 8/5/88. Mike Dean.

DMU

Date: 2nd September 1988

975010 Test Car Iris is seen passing Saltley on 02.09.1988 being hauled by 97204. Andy Cole.

DMU

Date: 13th November 1989

Taken against the sun, leaving Waterloo, during the excavations and rebuilding, 13/11/89 Ian McDonald.

DMU

Date: April 1991

Test Coach Iris, 975010, in Derby station in April 1991. Note the name also stuck in a cab window. Tim Stubbs.

DMU

Date: April 1991

Test Coach Iris (975010) in Derby station in April 1991. Tim Stubbs.

DMU

Date: 22nd April 1991

Test Coach Iris 975010 at Littleport on the 22nd April 1991. Surface Stock.

DMU

Date: 2nd August 1991

DB975010 on 2T96 Derby RTC to Manchester Piccadilly for testing the Altrincham to Bury lines for the onset on Metrolink. New Mills South Junction. Kevin Dowd.

DMU

Date: 15th August 1991

975010 in the air at the EDU, Derby, 15/8/91. John Reddyhoff.

DMU

Date: 2nd July 1992

975010 Test Coach Iris at Peterborough on the 2nd July 1992. Note the name is also showing in the window. Jerry Glover.

DMU

Date: unknown

975010 Iris at Waterloo, date unknown. Stuart Pearce.

DMU

Date: 27th August 1995

975010 IRIS is seen on display at Crewe Basford Hall open day on 27.08.1995. It had been repainted back into BR green. Andy Cole.

DMU

Date: 27th August 1995

Green liveried 975010 seen at Crewe Basford Hall open day, 27/8/95. Martin Sprigg.

                                                                                                                                                                             

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