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WIP T-Series Experience

Discussion in 'Configurations' started by NOCARGO, Jul 4, 2020.

  1. NOCARGO

    NOCARGO
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    Hi everyone,

    This won't be released for the next few months or so, but
    I think it's time to share a bit. My new 'T-Series Experience'
    mod will consist of the following things :

    - Fully working and realistic gearbox in 'Ecosplit'-style
    - Proper gear indication app for the above
    - Jake brake, with sound off course
    - Diesel blow off valve
    - The clutch has pneumatic sound
    - Extra artificial traction grip device thingy

    What does 'Ecosplit' mean ? Well, it's the name of a famous
    ZF gearbox for trucks. It ranges 4 gears between high and low
    and splits every gear in half. That means it has 16 gears :
    1-low 1-high 2-low 2-high 3-low and so on...

    What is a jake brake ? A jake brake closes the exhaust ports
    of the engine. It lets the engine build up enhanced engine braking
    and provides an extra braking factor for heavy vehicles.

    What is a blow off valve ? / *giggles* / For those who don't know
    please refer to Wikipedia. A diesel blow off valve though is
    still a rather special feature to date.

    What is 'extra artificial traction grip device thingy'?
    Something I invented to link more realistic climbing and
    hauling behavior to the T-series.

    All these features are currently still under development but
    as to date they are all working pretty fine already. :)

    You need decent controls to enjoy the gearbox mod
    -----------------------------------------------------------------------------
    The gearbox mod handles just the same as the real life
    counterpart. Many of you truck enthusiast understand
    what I'm talking about. If you for example, are rolling
    in 4-L and you switch the splitter to high and the ranger
    to high, nothing happens until you pass neutral for the
    ranger and clutch engagement for the splitter. After that
    you find yourself rolling in 5-H while you shifted your shifter
    from the 4-position to the 1-position. That is where the comfort
    sits in these (RL) systems. Such a complex gearbox needs to be
    controlled smoothly and comfortable.

    I have been waiting for a longer time to start developing the
    'Ecosplit' gearbox for these specific reasons. As I wasn't aware
    of the availability of several solutions for controlling this
    gearbox I was in search for a solution to that first.

    Last time I checked I found one single person on the net who
    was making a gear knob mod for ATS/ETS (truck sims). That was
    rather a while ago. Nowadays several solutions can be applied
    when simulating gearboxes as Eaton fuller or Ecosplit and others.

    There are expensive solutions, not so expensive solutions and
    cheap solutions. Yes ! Cheap solutions ! Great ! The not so
    expensive and the cheap solutions require a little handyness
    though, certainly the one where you can buy a 25 bucks real
    Eaton Fuller gear knob and convert it to a controller. There are
    at least two decent tutorials on YouTube that learn you how to
    make that though.

    My solution ? Enter 8BitDo Zero 2 ! 20 bucks, tiny, weightless
    and wireless :) What you see on the images is my prototype
    build. At first sight this prototype might give an uncomfortable
    impression, mistake not, this is very comfy and I might just keep
    it like this. I cut a piece out of an old Fanatec gear knob I had
    laying around, slammed the 8BitDo against it and made it fit the
    Thrustmaster. Done !

    3.jpg 1.jpg 2.jpg 3b.jpg

    This OP became a rather long story because I want to convince
    all truck enthusiasts that solutions are out there and they
    don't have to be expensive. I was not going to make this gearbox
    mod without a solution for proper controls. It would just be too
    painful and clumsy to drive the thing around, knowing how it
    works in real life. On top of that I initially wanted to make
    this Eaton gear knob but remember, it's big. And though it's
    realistic I still find more comfort in more refined controls
    when I'm simulating stuff. The real knob is big because it needs
    to handle all counter forces from the real lever. My tiny TH8
    doesn't really need that.

    Eaton Fuller gear shifter knob
    4_ef.jpg

    In the example vid below you see a 24 gear 'Ecosplit'-styled gearbox.
    The one I will release first will be the 16 geared. The 12(24) is
    just the one I started off with, for a few reasons.

    1- There was the 12-speed shift logic for the range that I already
    had developed.
    2- Splitting 12 gears is even more difficult so everything following
    are solid spin-off's. :) The split ratios are calculated ratios in a
    LUA file, so the gearbox jbeam file only shows 12 gears.
    otherwise → no proper gear indications

    -sorry for bad driving, live messing with the camera-

    Hope you like :)

     
    #1 NOCARGO, Jul 4, 2020
    Last edited: Jul 5, 2020
    • Like Like x 16
  2. RadeS

    RadeS
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    I have exact same H shifter;)
     
  3. DaddelZeit

    DaddelZeit
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    Ohhh yes! I've always wanted a jake brake!
     
  4. NeoSlx

    NeoSlx
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    Realistic ignition?
     
  5. NOCARGO

    NOCARGO
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    Not what this mod's about :/

    Yes, I bet quite a few own this shifter :)
     
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  6. Alex_The_Gamer

    Alex_The_Gamer
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    oh shid oh fugg a jake brake
     
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  7. PresidentJukeBox

    PresidentJukeBox
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    Jakes in BeamNG? Daaammmnnn.
     
  8. NOCARGO

    NOCARGO
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    ******* mod log *******​

    - getting files from previous versions :

    - testing gearbox combo RANGE/SPLIT.. working after several tweaks (discovered code flaw in previous mod!)
    - adding ui app for split read.. done
    - adding diesel turbo with blow off sound.. works but cannot find the reason why the turbo lua name cannot be changed
    - adding jake brake.. the mod wants to work but doesn't fully.. _investigating.. fixed
    - adding pneumatic clutch sound.. done

    ** TO DO **

    - code in the actual 16-speed
    - moving gear stick
    - add LTC (load traction control unit) and improve the code
    - make all components individually selectable and named properly
    - find out why custom made turbo lua filename cannot be renamed
    - test everything severely

    -----------------------​
     
    • Like Like x 4
  9. NOCARGO

    NOCARGO
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    The update between 0.19 and 0.20 sure broke (read changed) some but this mod is back on track :)

     
  10. KezzM8

    KezzM8
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    I'm curious about how you are getting the Jake brake to work? So glad someone is finally doing it
     
  11. NOCARGO

    NOCARGO
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    I should still refine the brake force a little (weight/brake ratio) but obviously it works. I always try to think outside box and use a little imagination before I get to it, that saves me a lot of trouble and worthless effort :) Most important is understanding how the lua code works. This jake brake is based on customized combustion engine lua. When it's activated the Iua subtracts angular velocity of the engine. So the engine is like 'forced' to reduce rpms, if I'm correct you could say a jake brake 'forces' an engine to slow down, right ? A second engine lua module picks up the angular velocity of the main engine. This second one doesn't use energy and has no nodes (so no physical mass) but it takes care of the sound. The pitch of the sound is also modified and it's the original v8 sound. When it blends in with the diesel sound of the engine, well, it sounds strikingly similar to a jake brake. The jake is turned on and off with a switch. By touching the gas pedal it also turns off. By clutching or rpms close to idle it also turns off but it remembers it was on so on declutch or revs above 650 (i believe) it brakes again. So it has all the properties of a modern jake brake and is therefore very comfy to handle.
     
  12. KezzM8

    KezzM8
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    Wow man that is impressive, I simply wasn't expecting so much to be going on for it to work I'm rather blowen away. Yea you are right in a way the engine is forced to slow down, in normal decel overrun on a diesel (since there is no throttle) the air in the cylinder is compressed and acts as a giant spring pushing the piston back down after Tdc, actually giving it some power so that's why diesels don't engine brake naturally like a gas engine. With the Jake brake activated, as the piston reaches tdc and that massive air spring is at maximum pressure, the exhaust valve is opened via an extra oil driven rocker on that cylinder, causing all that pressure to be released to the exhaust, giving that unique sound and giving up to 600hp worth of braking (in modern Cummins anyway) .
     
  13. NOCARGO

    NOCARGO
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    Thank you :)

    I actually never realized it works that way, cool :)
    Currently I'm just mathematically drawing angular velocity from the crank, as to say, but I guess I should complete the project with taking a look if it's possible to create some variable engine braking coefficient, should be doable :)
     
  14. default0.0player

    default0.0player
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    Diesels don't have any throttle so no blow off is needed
     
  15. NOCARGO

    NOCARGO
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    Quote:

    "The basic principles of a BOV are the same for a gasoline and diesel engines, the difference is that a diesel system needs some electronics to work properly. With either setup, the most challenging part of the installation is welding the mating flange onto the CAC."

    Article here
     
  16. default0.0player

    default0.0player
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    What? How do you actually surge a turbocharger without restricting the air with the throttle plate?
    TurbochargedGasolineEngineFlowDiagramP1.png
    In a gasoline engine, if the throttle is open and the turbo is working, P2 is higher than P1, the pressure difference is the boost pressure. P3 is the same or slightly lower than P2 depends on the throttle setting. P4 is higher than P3 because of combustion, and both P1 and P5 are ambient atmospheric pressure.
    Now if you lift the throttle suddenly, P3 will drop shuddenly and P2 will increase suddenly because the restriction of the throttle plate. The difference between P2 and P1 will be much, much higher than boost pressure, damaging the compressor if the BOV is absent. In a turbodiesel, however, there's no throttle plate. Engine power is controlled by fuel injection, suddenly lift the gas pedal will drop the P4, since the cylinders are not going to run backward, P3 is still the same as P2 and P2 will not rise, so no compressor surge.
     
  17. NOCARGO

    NOCARGO
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    Did you take a look at the article because it's teeming with resources, so maybe ask Turbosmart how they did it ? I know I have a lot of imagination but I do tend to check things out before I make something :) There's several Youtube videos on them too and I like this one in particular.
     
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  18. ThatDutchComrad2

    ThatDutchComrad2
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    Hi, do you have any progress of this date? Also I drive Volvo/DAF trucks and I could provide some realistic engine brake or compression brake sounds if you'd like.
     
  19. NOCARGO

    NOCARGO
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    Hi, the current progress consists of most that has been shared here in the thread up til now. This also means that most of the mod is actually ready to wrap up, although that still might take some time since a lot needs to be tested to make sure that no unpleasant flaws sneak into my release :) . As my previous posted todo-list looked like :

    ** TO DO **

    - code in the actual 16-speed
    - moving gear stick
    - add LTC (load traction control unit) and improve the code
    - make all components individually selectable and named properly
    - find out why custom made turbo lua filename cannot be renamed
    - test everything severely

    it now looks like :


    ** TO DO **

    - code in the actual 16-speed .. done (completely works with gear stick logic as explained)
    - moving gear stick
    - add LTC (load traction control unit) and improve the code
    - make all components individually selectable and named properly
    - find out why custom made turbo lua filename cannot be renamed .. done (nothing special, more a sort of note to self) :p
    - test everything severely

    The moving gear stick will take me about a day, if all goes well. Making all components individually selectable and named properly will take me about 2 days I guess cause that might get tricky. Testing out will take a few days and what saved to discuss for last is the LTC (load traction control unit). This is going to take me quite some effort in order to refine it to as much as essential and least fictional. I will try to explain a bit in detail on this one :

    LTC (load traction control unit)

    How does the the LTC work and why did I made it ? Well, as many know, there is a problem concerning the grip of the wheels from the T-Series' rear wheels. They tend to spin out there where in real life the wheels should spin less due to the weight that sits on them. It is very hard to overcome this problem in a realistic way cause the game's current tire physics won't allow for that. So I chose to set up a fictional force field to create more 'non-fictional' grip properties for the tires. It works very well but if you 'abuse' it deliberately for the purpose of testing then the force is currently still exceeding its borders and affecting the suspension, without harm but not without notice :) . This is just because I left the code from when it worked as desired at that point. THAT is why I feel this still needs a lot of attention to isolate the effectiveness from the areas that should not be affected :) . Here's an example of it's capabilities I posted several months ago. Don't try to climb that hill with a loaded trailer behind the T-Series cause it won't work without a workaround like this one.


    Thank you for offering your help on the sounds for pneumatics and jake brake. Currently I'm not planning to give either of those a custom sound due to lack of time and therefore delay in the mod's release. I'm pretty pleased with the current sound of the jake brake and although I would agree if someone remarks that the clutch sound needs be more personalized. It's just a big amount of extra work to create the extra function on the clutch, because currently here I'm using another 'clever' workaround to borrow pneumatic sound from the brakes. While the brakes sound different every now and then I managed to get a more uniform sound to be applied on the clutch action.

    All in all I'm aiming to wrap up the mod around the turn of the year, so thanks to all semi enthusiasts for your patience :)
     
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  20. ThatDutchComrad2

    ThatDutchComrad2
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    Lovely stuff, looking forward to the release
     
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