Train Length

Discussion in 'General Discussion' started by paulkemp, May 4, 2026 at 11:08 AM.

  1. paulkemp

    paulkemp Member

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    Adding A.I. trains to my route I found the Kuju 125 wouldn't appear. After some experimenting I found it will appear with 4 coaches but no more (The one in Kuju\Railsimulator\PreLoad is 7 coaches). I looked at the A.I. train in York to Newcastle. It has 4 coaches even though the PreLoad has 7. I made a short 125 PreLoad which works but I would like the long train. Any ideas ?
     
  2. 749006

    749006 Well-Known Member

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    I presume you are trying to make them appear from a Portal - that does not always work - removing trains does.
    When I add AI trains to a Scenario I just place them on the track at the location I want them to appear.
     
  3. triznya.andras

    triznya.andras Well-Known Member

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    Marker length may also be an issue.
    I never created quick drives but I've read that consist segments and various consist lengths exist to ensure that trains don't end up blocking too much. The simple example is sidings - short sidings can only house a couple wagons while proper yard tracks may hold entire strings. This is either dynamic or completely automated based on any marker where the train is stationary.

    The attached photo is from a Class 31 quick drive, so longer consists definitely can appear on Newcastle-York.
     

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  4. Kim Olesen

    Kim Olesen Well-Known Member

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    Quick Drive or standard scenario?
     
  5. paulkemp

    paulkemp Member

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    Thanks for the replies.
    I'm adding them to a quick drive. Is that York - Newcastle photo of an A.I. train ?. By Marker length you mean stations, destinations etc. ?
     
  6. westcastlerail

    westcastlerail Active Member

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    Could be any of numerous settings, so I would start checking as follows:

    My default settings for the Kuju 125 downloaded from TS Tools are:
    - Class 43 HST + 8MK 3
    - Kuju\RailSimulator\PreLoad\NewcYork\BR IC125 HST.bin:
    - High Speed Train - Blue & Grey
    - High Speed Train - Blue & Grey
    - 1975 to 2050
    - eConsistTypePassengerIntercity
    - Diesel
    - 00000003-0000-0000-0000-000000000000
    - Length (220m)

    Your created 4 coach version will need to match the above, but will have a smaller length.

    The default QD AI Spawn length for this route is 150m, so this setting will need to be increased to say 250m to get the default 8 coach HST above to appear.

    IMG_0422.jpeg
     
    Last edited: May 5, 2026 at 7:26 AM
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  7. Kim Olesen

    Kim Olesen Well-Known Member

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    As westcastlerail says. Lenght in the spawnpoints will have to be modified.
     
  8. triznya.andras

    triznya.andras Well-Known Member

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    It's AI - my train was the 31.
    I suppose, follow westcastlerail's advice, should work :) it's probably a filter. You can clone and check the default QD, it's what I usually did when learning to create scenarios - observe.
     
  9. 70045

    70045 Active Member

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    As spawning for portals has not been "supported" by Dovetail for many years, it is better to start each AI train from a specific position. It can also reduce drain on resources if AI trains are only present around the point where the player train will pass them.

    John
     
  10. Kim Olesen

    Kim Olesen Well-Known Member

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    No can do, the poster stated he was talking about quick drives, and the only way to have ai traffic in those are spawn points.
     
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  11. 70045

    70045 Active Member

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    Sorry, my misunderstanding.

    John
     
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  12. paulkemp

    paulkemp Member

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    I had completely missed the train length parameter. I can spawn long trains but not in stations. There must be some adaptation to platform length then.
     
  13. westcastlerail

    westcastlerail Active Member

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    You can measure the length of platforms using the tape measure function.
    (Not a great example here as its on a curve but gives you a rough idea!)

    IMG_0425.jpeg


    If placing AI at terminus station, then I would place the AI Spawn marker at the back of the platform.
    Get the directional arrow face towards the departure direction, then use set the AI spawn direction to BACK.
    IMG_0426.jpeg


    If placing at a through station, then I place AI spawn at the furtherest point on the platform.
    Get the directional arrow face towards the departure direction, then use set the AI spawn direction to FRONT
    IMG_0427.jpeg
     
  14. Kim Olesen

    Kim Olesen Well-Known Member

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    No problemo, i’ll freely admit to not always reading all posts myself.
     

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