I am being lazy by not looking through 164 pages of their thread. Is there a list anywhere with approx dates of the 70 units as to when they were 7 made up to 9 cars.
Any info appreciated
Mark
There are broadly speaking two groups of units which operated as 7 car units, the rest of the units were always 9car. The first group was introduced on the Shenfield line: 003,005-017,022. These units were the most recent to be extended:
Former 7-car units in East (In order of conversion to FLU). Date units moved to Old Oak for conversion to FLU (reported, 2021,2022)):
345 010 Yes - moved to Old Oak 17 April 2021. Reported 9-car May 2021 at Old Oak. Reported as tunnel test unit June 2021. Passenger service West side
345 008 - Moved to West July 2021. Extended to 9 car August 2021.
345 005 - West August 2021 - lengthened to 9 car August 2021.
345 006 - Extended to 9 car at Old Oak 16 November 2021
345 007 - Reported as 9 car at Old Oak 29 November 2021
345 022 - Extended to 9 car at Old Oak 9 December 2021
345 003 - Extended to 9 car at Old Oak 7 January 2022
345 009 - Extended to 9 car at Old Oak 28 January 2022
345 013 - Extended to 9 car at Old Oak 14 February 2022
345 014 - Extended to 9 car at Old Oak 2 March 2022
345 011 - Extended to 9 car at Old Oak 16 March 2022
345 012 - Extended to 9 car at Old Oak 22 March 2022
345 015 - Extended to 9 car at Old Oak 31 March 2022
345 016 - Extended to 9 car at Old Oak 14 April 2022
345 017 - Extended to 9 car at Old Oak 28 April 2022
The other group of units that was previously 7 car were additional units to cover 7 car operation to Reading, although these units also moved between East and West, as did the other 7 car units.
Former RLUs extended from 7-car to 9-car (reported) in order of conversion.
345 028 October 2019 confirmed November 2019
345 055 May 2020
345 059 May 2020
Some units then shortened back to 7 car:
345 063 9 car 18 April 2020, 7-car 27 June 2020
345 064 9 car May 2020, 7-car June 25 2020
Units extended to 9, not operated 9, then reduced back to 7, :
345 047 June 2020 extended to 9 but reduced to 7 again in 2 July 2020
345 057 June 2020 extended to 9 but reduced to 7 again in 15 June 2020
Units later extended for second time:
345 047 15 January 2021 extended to 9 for second time
345 057 ~22 January 2021 extended to 9 for second time
345 063 March 2021 extended to 9 for second time
345 064 - STILL 7 CARS
DATE of conversion back to FLU:
345 047 9-car from January 2021
345 057 9-car from January 2021
345 039 9-car from February 2021
345 052 9-car from February 2021
345 064- Moved East as RLU February 2021
345 051 9-car from March 2021
345 020 9-car from March 2021
345 040 9-car from March 2021
345 049 9-car from March 2021
345 044 9-car from March 2021
345 063 9-car from March 2021
345 029 9-car from April 2021
345 038 - Extended to 9 car at Old Oak 8 May 2022
There is also 038 which was amongst the last 4 remaining 7 car units. The other remaining 7 car units are 042, 056, 064. 038 is now in operation as 9 car.