A question about operating the Speed Set on the Class 390

Discussion in 'Traction & Rolling Stock' started by Kurolus Rex, 15 Oct 2019.

  1. Kurolus Rex

    Kurolus Rex Member

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    Bit of a pedantic one here (when are my threads not? ;))

    I'm not sure how exactly to explain this clearly, so i'll give an example instead:

    • You, the driver, have just accelerated up to a 20mph limit and have activated the speed set and are in Notch 3 or 4 of power.
    • The speed limit has just increased to a higher speed limit and you can now accelerate up to this speed
    In this scenario, are drivers trained to:
    • A. Disable the speed set and start off accelerating in Notch 3 or 4 of power.
    • B. Reduce power first to a lower notch, then disable the speed set and build the power back up again.
    If anyone could shed some light on this topic i would be very grateful!
     
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  3. DeparturesBeck

    DeparturesBeck Member

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    You need to move the power brake controller (PBC) away from a power position to disengage speed set, so in your example you'd move the PBC to off and then take power again to accelerate (typically straight into notch 4).
     
  4. Kurolus Rex

    Kurolus Rex Member

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    Thanks!

    Does going straight into Notch 4 create any discomfort or is that not an issue?
     
  5. DeparturesBeck

    DeparturesBeck Member

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    Nothing noticeable if you're already moving, it's only from a stand that you'd aim to use a lower setting.
     
  6. Kurolus Rex

    Kurolus Rex Member

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    Thanks, i thought this might of been the case.

    On a related note, do you what kind of proceadure is used when departing?
     
  7. DeparturesBeck

    DeparturesBeck Member

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    Acceleration isn't their strong point, so forget about notch one. I tend to start rolling in two, then up to three and am in notch four before reaching 15mph. Everyone drives them slightly different though.
     
  8. Kurolus Rex

    Kurolus Rex Member

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    Thanks. What about the process prior to taking power? (DRA, signal to guard, brakes, reverser etc). I'm asking because i want to learn how to drive these trains authentically in a simulator. Here is my current technique:

    1. Buzz back to guard
    2. Disable DRA
    3. PBC: Step 6 - Off
    4. Reverser: Forward
    5. PBC: Off - Notch 2
    6. Notch 3 usually reached by 5mph
    7. Notch 4 reached around 15mph
    Is that in the right order or would you do it differently? I have a feeling some of it might be wrong.
     
  9. driver9000

    driver9000 Established Member

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    Reset the DRA when the signal clears because that is what it applies to and select direction before releasing the brake (not sure if the handle is locked by the direction switch on a 390).
     
  10. ComUtoR

    ComUtoR Established Member

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    Is there a hillstart button or some description ?
     
  11. driver_m

    driver_m Established Member

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    yes there is.
     
  12. DeparturesBeck

    DeparturesBeck Member

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    Try:

    1. Reset DRA when signal clears.
    2. Two on the buzzer back to the Train Manager (although RA is the default means of dispatch)
    3. Directional switch to Forward
    4. PBC from Step 6 to Notch 2*
    5. Notch 3 then 4
    *Supposed to pause briefly in off to allow brake pressure to drop before applying power.


    Yes, there is a push button (more like a black sphere/ball) on top of the PBC, this needs to be pressed down to pass from off into a power position.

    Pressing the button when stationary (or below 3mph) engages the hillstart (step two braking) - therefore for a hillstart keep the button held down when moving into a power position - release when confident enough power has been generated. If not performing a hillstart, the button is only held down very briefly to move from off into a power position.

    [​IMG]
     
  13. ComUtoR

    ComUtoR Established Member

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    Cheers to the both of ya.
     
  14. driver_m

    driver_m Established Member

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    DRA should have been took off at this point. You can’t do the procedure on a red.
    After getting ready to start,

    Put it in Forward
    Move PBC from brake step 6 and go to appropriate power notch. There isn’t a right or wrong power to apply really. Though 1 I would only really use on the shed.
     
  15. Kurolus Rex

    Kurolus Rex Member

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    Thanks, exactly what i was looking for! Also a very nice shot of the cab ;)
     
  16. PudseyBearHST

    PudseyBearHST Member

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    What’s this all about?
     
  17. EE Andy b1

    EE Andy b1 Established Member

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    If poor rail adhesion and the set starts slipping on acceleration then you can get slight shocks through the train, so then ease off power and re-apply more slowly notch at a time until the set gets it's feet again, so to speak!
     
  18. Kurolus Rex

    Kurolus Rex Member

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    That was my previous technique which i was using in the simulator. I'm not a driver (as you can see ;)).
     
  19. PudseyBearHST

    PudseyBearHST Member

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    Sounds like something of a Wolverhampton depot book or something :D
    Is it also 100mph max? :lol:
     
  20. EE Andy b1

    EE Andy b1 Established Member

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    Couldn't be Wolverhampton Drivers, they don't use power notch 4, but i do believe they get upto 110 mph now and again! :lol::lol::lol:
     
  21. Kurolus Rex

    Kurolus Rex Member

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    What would you suggest then? ;)
     
  22. driver_m

    driver_m Established Member

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    Haha definitely a Wolves Driver. AKA flystunners.
     
  23. driver_m

    driver_m Established Member

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    (Excuse our inter-depot digs for those of you not drivers on the West Coast Main Line!)
     
  24. 87015

    87015 Established Member

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    Any English WC depot deriding another is pretty comical when Polmadie wiped the floor in days of trains worth driving. Everyone else needed a special excuse to do it like it could be done!
     
  25. PudseyBearHST

    PudseyBearHST Member

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    No messing about, you’ve got the xx07 Liverpool train right behind you, simulator or no simulator ;) I don’t see the problem in going straight to full power after a few of seconds as long as not starting on a single yellow or poor adhesion as Andy says.

    I know of at least 1 Wolverhampton driver on this forum so let’s stop before he reads this thread and boasts how he hit a platform at a mind blowing 25mph the other day <:D


    Yeah you know whether it’s a Polmadie or Preston driver you’re relieving without even looking at your diagram just by the time the train gets in haha
     
    Last edited: 15 Oct 2019
  26. Llama

    Llama Established Member

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    Wolves - we operate low velocity electric services? :)
     
  27. Kurolus Rex

    Kurolus Rex Member

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    Noted, i'll give Notch 3 once i'm rolling quickly followed by Notch 4 a try.

    I must admit i find all this depot banta quite amusing to watch :lol:
     
  28. driver_m

    driver_m Established Member

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    Hehe, this is getting into a ‘my dads bigger than yours’ so I shall indulge, The tales I got told from the ‘good old days’ definitely mean that Polmadie drivers were not on their own for testing a train to its capabilities. I don’t know if they ever came across Liverpool drivers in the old days for instance!
     
  29. PudseyBearHST

    PudseyBearHST Member

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    Nope, I was told by a couple of Liverpool drivers that it stands for We Operate Locomotives & Vehicles Extremely Slo... I mean Quickly :D

    Sounds more like it ;)
     

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