Most powerfully hauled passenger trains

Discussion in 'Traction & Rolling Stock' started by SM Chobham Int, 27 Nov 2019.

  1. Llama

    Llama Established Member

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    26 isn't it?

    1160hp at the flywheel, maybe 850hp absolute maximum hp at rail, 75 tons of loco and 30 tonnes of MK1 makes it slightly less hp for the coach than a solo 153? o_O
     
  2. 33017

    33017 Member

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    I think it’ll have been 24s you’ve seen photo’s of - Inverness type 2s worked the branch and that depot seemed to use their 24s and 26s indiscriminately.
     
  3. Justapunter

    Justapunter Member

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    Most of them were. But three were used as test beds for the 87 orders (like 47 046, became 601 and then 901). They had 5,000hp.
     
  4. gg1

    gg1 Member

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    It may well have been. I've always struggled to tell the difference between later build class 24s (with end doors and headcode boxes) and the similarly designed early 25s.
     
  5. delt1c

    delt1c Established Member

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    Has anybody mentioned when a single HST power car took passengers forward in the brake van on the Newquay branch due to a derailment, will take some beating
     
  6. Richard Scott

    Richard Scott Member

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    Don't forget the 153 won't have 350hp at rail either due to transmission losses and other loads such as compressor, alternator. The 26s are quoted as 900hp at rail (admittedly not over the entire speed range) so think 26 + 1 mark 1 would win there.
    I know this is abroad but did have 3 ER20s on a 2 coach train, all under power in Austria and an 07 on a single coach in Bulgaria.
     
  7. Llama

    Llama Established Member

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    153s are 285hp too, probably 200hp at rail at best
     
  8. Richard Scott

    Richard Scott Member

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    Oh yes, was thinking of 158s; they're even worse with only 285hp.
     
    Last edited: 1 Dec 2019 at 22:43
  9. Bletchleyite

    Bletchleyite Veteran Member

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    In terms of power to weight the 68+Mk5a sets can't be far off - they take off like stink - EMU like acceleration.
     
  10. ashkeba

    ashkeba Member

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    68+5Mk5a is 2.8kW over 68t+5*43t = 283t.

    Anyone know the weight of a 755/4?
     
  11. MisterT

    MisterT Member

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    In The Netherlands, we have our Intercity Direct trains, which are 7 coaches (6 in the past) with top-and-tail Bombardier Traxx locomotives at 5.6 MW or 7,500 hp per loco, so a total of 11.2 MW or 15,000hp over 550t total weight. Does that count?
     
  12. dubscottie

    dubscottie Member

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  13. TRAX

    TRAX Member

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    It’s all good talking about hp, but why isn’t anyone talking about kN, which is what actually pulls you ?
     
  14. a_c_skinner

    a_c_skinner Established Member

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    That is of course force, not power.
     
  15. TRAX

    TRAX Member

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    Yes but it is the main parameter to take into account as far as hauling is concerned. You measure the pulling power of a locomotive by looking at its tractive effort (kN) more than its power (kW), although both parameters are closely linked
     
  16. 43096

    43096 Established Member

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    Not as good as the 2 x Taurus on four coaches I mentioned earlier!
    :lol:
     
  17. D6700

    D6700 Member

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    I was going to mention that combo, but saw you'd beat me to it! I saw such a train at Villach, featuring a 1016 and a 1116, both with pans up and just 4 coaches.
     
  18. 43096

    43096 Established Member

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    Mind you, the most "throw you into the seat" performance I've ever experienced was a pair of SBB Re460s on 11 coaches leaving Chur 12mins late (waiting bus connection of course!). Think it must have been a Zürich driver on his way home - the acceleration was something else and he was clearly using every kW of power available. Braking for Landquart was equally impressive, hitting the platform ramp at around 70mph and stopping perfectly in the right place. Sadly had to leave the train there, but watching the departure from Landquart - by now just 8 late - it wasn't going to be late by Zürich!
     
  19. Chris Butler

    Chris Butler Member

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    You measure the pulling FORCE by looking at the tractive effort, not the power. As you say, the two are linked (power = force x speed), so I am a bit puzzled what point you are making.
     
  20. Mordac

    Mordac Established Member

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    Since this thread is full of pedantry already, I suppose I might as well mention that what "throw you into the seat" is jerk (i.e. change in acceleration) and not acceleration (change in speed).
     
  21. jopsuk

    jopsuk Veteran Member

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    Maximum tractive effort and power are wildly disconnected- a class 08 can exert 160kN from 261kW, a class 91 190kN from 4830kW.
     

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