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Scrapped - Derby RTC on site by Ward Ferrous Metals 10/85


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Derby RTC** *** ****Brian Cuttell
Derby RTC** *** ****Roger Harris
Derby RTC** *** ****Brian Cuttell
Derby RTC** *** ****Roger Harris
Derby RTC** *** ****Leslie Wild
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The following comments have been left on photos of this vehicle. To reply, just visit one of the photos.

  • 975634

    23 November 2004 - Ben Williams

    This test train originally consisted of two mock Power cars (PC3 - RDB975634 and PC4 - RDB975635) with nothing (0) in between hence the nickname 'POP', it was used from September 1971 as a test bed proving the suspension, tilting and braking systems.

    Later the P-O-P train was modified with an APT-P vehicle (Laboratory 8 - 'PILOT' RDB975636) being built and formed between the original P-O-P vehicles, which were re-mounted on revised bogies and given body cladding.

    The three vehicle set then performed bogie and ride research work, mainly on the West Coast Main Line.

    Thanks to info from

  • 975634

    9 July 2007 - Kit Spackman

    In its first gestation POP train was not skinned, being just a collection of steel tubes with ballast weights fitted to simulate the positions of the gas turbines etc in the APT-E structure. There was a small cabin in each vehicle to house the tilt and brake packs and some intrepid staff to look after them, usually me as well as anyone else I could con into doing it!

    As Ben points out, PC3 and PC4 were run back to back, originally with the RTC Unimog as traction power (!) and then with the last Class 17 Clayton. At first POP was fitted with Swinging Arm bogies in all three positions, later replaced by E1Ts, and later, as seen above, by two H4Xs and BT11 (I think...) articulated bogies.

  • PC3, PC4, Lab 3, Lab 10

    20 June 2016 - Ben Williams

    Interesting photo here - probably quite a rare sight too...

  • PC3, PC4, Lab 3, Lab 10

    31 March 2017 - Kit Spackman

    Lab 3, just one end of which can been seen on the near end of POP-Train, was painted in the RTC Red/Blue scheme at this time, which was in 1971-2. It remained in this scheme until being repainted in the 'Inter City' scheme, as seen in the second photo, sometime in the early 80s.