What Would You Use The “trail 24” Mu-2a Valve For?

Discussion in 'TSW General Discussion' started by james#6343, Feb 23, 2021.

  1. james#6343

    james#6343 Member

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    Title is pretty self explanatory. I’m running the “Equipment Move” scenario on the Oakville Subdivision. This scenario has you operating a consist with 5 locomotives. 2 GP38-2 and 3 GP9RM.

    I took the extra time to set up all the engines so they all apply power and brakes, following the manual. But I noticed that the MU-2A valve has an option for Trail 24, when would that be used?
     
  2. Cael

    Cael Well-Known Member

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    Sorry to hijack this thread, but if anyone could explain all of the Trail settings (Trail 6, 24, 26), I would be immensely grateful.
     
  3. solicitr

    solicitr Well-Known Member

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    24 RL and 26L are two different brake standards. The MU2A valve lets you set the trailing locos to match the one used by the lead.

    Type 6 is an old obsolete system, althoough it might just turn up in Clinchfield.

    All CSX locos use 26. The CalTrain FP40 uses 24, but it doesn't factor into gameplay because they never operate as MUs in the PC.
     
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  4. razmatus#2517

    razmatus#2517 Well-Known Member

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    when doing services with MP36PH on Peninsula, what should the MU-2A Valve be set as, and does it make in-game difference?
    1) when Baby Bullet is leading
    2) when you control the train from cab car

    Do you use Lead or dead in both cases? And what does happen if you leave the MU-2A switch on Trail 24 or 26?

    Edit: I have tried setting both of those in the Baby Bullet cab, didnt seem to affect anything... or am I just looking at the wrong stuff? Like, what difference SHOULD it make and what difference does it ACTUALLY make in this game
     
    Last edited: Feb 28, 2025
  5. Conductor B

    Conductor B Well-Known Member

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    I don't know whether it's properly modeled in game or not, but in real life you would use "Lead or Dead" when running with a single locomotive. In that one scenario where you have a second F Unit for the "special train" you would set the trailing locomotive to Trail 24.

    Running from the cab end makes no difference. After all, the tractive effort is coming from the locomotive and the air for the brakes is sent from the locomotive. The cab is, essentially, a remote control for the locomotive.

    Finally - and this is the part I'm not 100% sure about - I believe that the MU-2A setting refers to the locomotive brakes and not the auto-brakes. You can't control the locomotive brake from the cab that I'm aware of, unless the "parking brake" is a way to set the locomotive brake.
     
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  6. razmatus#2517

    razmatus#2517 Well-Known Member

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    if you are driving MP36PH (Peninsula Corridor) + cab car is at the back so kinda dead weight at that moment... does it really matter if the MU-2A is in Lead or dead or Trail 24 or 26? Cos as far as I have done services with Baby Bullet, the loco behaved the same on either of the settings
     

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