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How much can you shift with an 08?

Discussion in 'Diesel & Electric Traction' started by johnofwessex, Nov 13, 2015.

  1. johnofwessex

    johnofwessex Resident of Nat Pres

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    I've just heard a driver state he moved a 1900ton train with one - very slowly

    He certainty thought well of them
     
    johnofwessex, Nov 13, 2015
    #1
  2. gwalkeriow

    gwalkeriow Well-Known Member

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    I can believe it, they are superb bits of kit. Once was doing some shunting at Bewdley D3022 moving 17 coaches in notch one with ease.:) Also had to do a few thunderbird duties, not exactly fast but you get there in the end.
     
    gwalkeriow, Nov 13, 2015
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  3. burmister

    burmister Member

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    The TE required to move the train would depend on the rolling resistance of the stock, gradient and friction between wheels and rail so the load that could be moved would depend on those. You change the connection on the Traction Motors between series and parallel depending on the TE required.

    The 47.5 Ton Class 10 ( GEC equilivant of the 08s) in Series has a tractive effort of over 50,000 lb at 1 mph developed from the 350 hp ER6 Lister Blackstone engine, after 20hp is allowed for auxiliaries. TE falls rapidly with speed.

    In Parallel you will get over 40,000 lb TE at 1 mph.

    So as long as the load you are hauling allows you to get enough speed up to reduce the TE down to the continually rated effort which is around 6 to 8 mph you can pull as much as you can for as long as you like and your speed will balance against the TE the train requires at full power.

    Ours can pull 5 coaches plus a 73 and 37 up a 1 in 80 at a steady 10 mph on 3/4 power and barely breaks into a sweat doing it.

    The Class 10 gives me a lot of satisfaction to maintain and drive and the general public seem to like them as well perhaps because they are and look very old, the rods and lots of shiny brass work in the cab.

    Brian
     
    burmister, Nov 13, 2015
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  4. johnnew

    johnnew Member

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    Tangmere plus the Royal Duchy(?) set! Sorry but couldn't resist it.


    Sent from my iPad using Tapatalk
     
    johnnew, Nov 13, 2015
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  5. pmh_74

    pmh_74 Part of the furniture

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    Not on all of them. On our 08 the series/parallel changes over automatically when (IIRC) notch 4 is selected, the driver has no control over this.
     
    pmh_74, Nov 16, 2015
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