Steam Vectron Brakes Take Incredibly Long To Release

Discussion in 'TSW Troubleshooting & Issues Discussion' started by Myron, Sep 22, 2023.

  1. Myron

    Myron Well-Known Member

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    I set the brake switch from full to release and it took the Vectron almost 10 seconds to go back to zero with the braking, I wanted to go from 200 to 80 but it now went to like 20 thanks to that. on the other locos it worked better. also I think the brakes respond a little bit late, idk though
     
  2. Spikee1975

    Spikee1975 Guest

    Which brake mode are you in? G (Güter) take a long time to release, that's realistic. How long is the train? Brake early, in real life you apply 4.5 or if you're really in need, 4.0 bar for speed changing. Do a full service if you need to stop (or use Quick Release (Füllstoß) to overcharge the brakepipe in case you've braked too hard.

    Haven't tested the Vectron in TSW4 yet.

    This is an interesting channel (german) from an ex-DB engineer about airbrakes.
     
    Last edited by a moderator: Sep 22, 2023
  3. Myron

    Myron Well-Known Member

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    the brake mode was in what it was on when I spawned it with free roam, idk which mode, probably cargo (G) mode
     
  4. Spikee1975

    Spikee1975 Guest

    You should be aware of how the loco is set up to be prepared, of course that depends if you want to play it realistically.

    And to do something useful with your thread, we should know what train you were pulling.
     
  5. Myron

    Myron Well-Known Member

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    I was pulling air :)
    (nothing was coupled to it, well, I believe it was the time I had 3 more vectrons at the back of it but that's it)
     
  6. Spikee1975

    Spikee1975 Guest

    You are probably used to the ICE's fast responding ep brakes :)
     
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  7. Myron

    Myron Well-Known Member

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    possibly
    too bad I can't use the ICE in TSW4 yet
     
  8. OpenMinded

    OpenMinded Well-Known Member

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    Sounds pretty realistic to me, even in P setting. I dont have reference material from the Vectron itself, however, basically all KNORR brakes have similar release times for the cylinder pressure. Here is a picture showing a KE1c cylinder from emergency braking to fully released:
    upload_2023-9-22_22-11-53.png
    .
    You can see that it takes aprox 27sec to full release ("pZyl-Druck" cruve). If you consider you may have had just above 1bar cylinder pressure ("druck in bar" axis), you can see that it would take approx 10 sec to fully release. I would rather think that all other locos are not as realistic as the Vectron?!

    Maybe cwf.green can add some more insight into the Vectron itself, however, all reference material I have shows that this should be quite close to reality
     
  9. Myron

    Myron Well-Known Member

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    I guess I have to get used to the Vectron's brakes
     
  10. cwf.green

    cwf.green Well-Known Member

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    That's intended (and prototypical). Blended braking acts like a "surrogate air brake". It will try to apply and release in similar times as purely pneumatic would do.

    0 kN to full service effort (blended braking):
    R/P: 3-5 seconds
    G: 15-20 seconds.

    Full service effort to 0 kN (blended braking):
    R/P/G: 15-20 seconds.

    Most likely the formation was in R-brake since it was locomotives only. In R-brake the full service effort is high. Together with a low train weight (and each locomotive having blended braking active) and the 15-20 seconds to release, no wonder you undershot ;)

    My suggestion to drive single engine formations is to mostly just use the throttle to apply dynamic brakes. It's much faster than the indirect brake and it does the exact same thing unless you've deactivated blended braking. If you still want to use indirect braking then simply make smaller applications and release above the speed you want to reach.
     
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  11. Fitz

    Fitz Well-Known Member

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    I find the brake force is very weak when running light engine. It h
    Makes shunting hard.

    Compared to what I'm used to driving the 182 and 185 in game,the Vectron takes full brake application to stop where as setting 2 is fine in other modern locos in game.
     
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  12. Myron

    Myron Well-Known Member

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    yeah I'm sure they have to do something about that, it partially ruins the fun idk
     
  13. Spikee1975

    Spikee1975 Guest

    When running light engine below 40 km/h you don't use the train brake, use the direct loco brake instead, that's what it's for. 1.5 bar cylinder pressure and it comes to a stop pretty smoothly.

    I'd say they absolutely nailed it with the Vectron, and it feels very realistic. Definitely one of (if not) the best loco(s) in the TSW universe.

    What irritates me a little is that the Speedo symbol of the left MFD is crossed out when AFB is active, shouldn't it be the other way round? Wanted to check it on ZusiDisplay, but on its 193 display the AFB is in a menu (Funktionen) and not assigned to a home screen button.

    12.png

    cwf.green Awesome job here! Kudos and thanks.
     
    Last edited by a moderator: Sep 23, 2023
  14. Myron

    Myron Well-Known Member

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    guess I'll use the direct brake from now on then
     
  15. OpenMinded

    OpenMinded Well-Known Member

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    Then again, there must be a reason why light locos usually only have enough brake percentage to drive only 140kph when under PZB supervision.
     
  16. cwf.green

    cwf.green Well-Known Member

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    You can't assess the realism of the Vectron based on whether it acts similar to other ingame locomotives. Furthermore, even in real life the Vectron is quite different to both the BR185 and even the BR182 in several aspects that have to do with braking. The Vectron limits the ED brake force to not exceed certain deceleration limits (brake mode dependent). I didn't make this up, the manual states it :)

    My suggestion is to verify that the brakemode is "R" when running light engine (should automatically be there by default but if you uncouple wagons then you have to change it yourself). This will "unlock" a higher deceleration limit and also increases the blended brake effort for each brake step. Even then, in principle there is no reason (when running light engine) to use the train brake lever to slow down instead of the throttle since the train brake simply applies electric brakes anyway. If you insist on having the "old" behaviour you can force this by pressing the button on the train brake lever or using the "Dynamic brake decrease" button. This will deactivate blended braking. It is not realistic to run the locomotive this way but nothing is preventing you from doing it ;)

    At low speeds the direct brake is preferred and superior as Spikee1975 mentioned.

    I also implemented a new direct brake control scheme for digital controls (keyboard). Tapping or holding down the independent brake increase/decrease simply moves the direct brake lever to the spring loaded intermediate positions. If you want to move the lever to "Full Release" or "Full Service" you have to press and hold and then quickly tap the same key again to lift the constraints. Analog (mouse, controller) works as usual (no constraints). This was requested by beta testers and I feel it makes using the direct brake much more natural since you can make small adjustments in pressure without overshooting and ending up in the notched positions.

    It's prototypical. See this video for example. Basically treat the indications above the Softkeys as "what will happen if I press the button" rather than the current state.

    EDIT: Also note that the Zusi variant (unless there are multiple) simulates the older "Software D" package while the TSW RP Vectron simulates "Software E". One striking difference is the "FM" boxes on the TDD or the different brake cylinder pressure indications.
     
    Last edited: Sep 23, 2023
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