WIP 1980 Honda Prelude

Discussion in 'Land' started by AdR, Jan 21, 2015.

  1. superpat89

    superpat89
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    I can't wait for this car either. Taking a look at your portfolios online have me thinking, What's the next car going to be?
     
  2. AdR

    AdR
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    BeamNG Team

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    First things first, need to finish this one :)

    Been dealing with the rear suspension for about 2 hours or more but no luck, as I don't have the knowledge to make it from scratch.

    2015-02-21_00005.jpg

    Tried to adapt the Covet's rear suspension but it just doesn't work properly. I don't want to waste more time on this, so I'm looking for someone with experience who's interested in doing it. This is the setup:

    prelude_pre444_06.jpg

    If anyone's up for the task, we'll set up a dropbox to share the files and work there.
    I'll be working on the UV maps, textures and materials from now on, so I'll be busy for a while with those. Whoever's interested, just send me a PM :cool:
     
  3. DavidTheTechGeek

    DavidTheTechGeek
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    Try adapting the suspension from the Sunburst.
     
  4. AdR

    AdR
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    BeamNG Team

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    Thanks, I did that, but even thought it looked ok after setting up, when I put on the wheels they just start vibrating and explode.

    Now it's on the hands of JDMClark, maybe he will get lucky :)
     
  5. gabester

    gabester
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    BeamNG Team

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    Looks like a pretty simple semi-trailing arm suspension, similar to the Covet. If it's exploding, the beams probably have too high spring/damp for their nodes' weight.

    EDIT: Another common cause of instability is mismatched scaling. Remove all the beamSpringScale, beamDampScale, etc. from every .jbeam except the base vehicle .jbeam (they can't be different between different parts or things will start breaking).
     
    #105 gabester, Feb 22, 2015
    Last edited: Feb 22, 2015
  6. FAN_RJS

    FAN_RJS
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    Is great to see the Prelude touching the ground! Keep it up! very nice work. I really like that ppl put effort on making things work as they should instead of just put car ingame to take screenshots. Dedication is the word i find to this project! grats again :D
     
  7. JDMClark

    JDMClark
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    I was able to make it drivable. I have a fair amount of knowledge with doing suspension work in jbeam.. Just not brilliant at it. It can be driven just doesn't like to be abused. Can drive around East Coast with it right now just having issues with the rear end. Cleaned up a lot of unnecessary stuff in the jbeam from where things were copied over. I've put a couple hours into now.

    81dc1a28be.jpg

    When I got it the rear wheels shot off with the force of a nuclear bomb... Its partially drivable now. I've done most of what i can do. Atleast for now.

    edit: heres a video demonstrating my limits with jbeam.. :I

    edit#2: Alright the rear end is in pretty good shape fixed a lot of stuff and the tires needed some adjustments. Only left with 1 strange issue. The passenger rear tire likes to break but not come off. The Driver rear does not have as severe as an issue as the passenger rear. The driver rear can take up to 5 times the abuse more than the passenger rear tire. Been trying to figure out why.. Not sure whats causing the issue, any ideas would be nice.
     

    Attached Files:

    #107 JDMClark, Feb 23, 2015
    Last edited: Feb 23, 2015
  8. AdR

    AdR
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    Just replied through PM but while we're at it, I'll just say it again, good work on it! there's still lots to do though.

    For some reason it must have upper arms (like all the official cars have I believe), even though the real car doesn't... otherwise it's impossible to make it work right.

    Here's my sketch of how the rear suspension geometry should be:
    beamer.jpg

    Then there's the matter of connecting it to the frame and adjust the beams properties. But I think it should work like that.

    This is the real setup, with no upper arms:
    6445450421_8b32385931_o.jpg

    - - - Updated - - -

    There were no beamscale at all so that's ruled out. There's the matter of spring and damp values, but first we need to get the suspension geometry right, wich like I've mentioned above, I need to add upper arms where there really aren't any.
     
    #108 AdR, Feb 23, 2015
    Last edited: Feb 23, 2015
  9. Khristopher

    Khristopher
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    You're doing so great on this. This is one of the only amazing looking projects I know of that actually made it into game! Can't wait to see it all finished up, with shiny candy red.
     
  10. AR162B

    AR162B
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    Why does it need upper arms? Slidenodes are able to cope with the moment. Looking at the real car's suspension drawing it should work fine.

    Great project btw, the mesh looks really great :)
     
  11. AdR

    AdR
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    Thanks, but I have no idea how slidenodes work... yet.
     
  12. Bakasan

    Bakasan
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    They're pretty simple really. In terms of geometry, you essentially have a beam running from the lower control arm to the strut tower (this is the rail), a node lying on this beam (this is the slidenode, and should be positioned at the base of the spring) and finally a regular beam running from the slide node to the tower (this is the coilover, containing the spring/damp values). You can view the syntax in the wiki ;)
     
  13. AR162B

    AR162B
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    Look at the Sunbursts' front suspension. It MacPherson struts, (and therefor has slidenodes) it looks a bit like your rear suspension.
     
  14. AdR

    AdR
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    Thanks guys, I'm not at home right now but I can start doing some homework, in theory, that is.
     
  15. Dc5R

    Dc5R
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    Wait . You're 32 and still do homework ?
     
  16. VeyronEB

    VeyronEB
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    I think you missed the context.. He means research into the car etc. :p

    Anyways some pretty impressive work thus far :D
     
  17. AdR

    AdR
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    I meant reading about slidenodes and whatnot :) lI own a small stationery shop, so I don't need to study for a living, only for what I find interesting or useful, like beamng for example.
     
  18. Dc5R

    Dc5R
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    Oh , then good luck with that ! ;)
     
  19. FAN_RJS

    FAN_RJS
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    Hi CB, even when i dont know how Jbeams work´s, as u know i been moding things and physics. I had a similar problem with a fiat 600 in the past, the rear susp arm have that kind of shape, and dont need upper arm. I´ve solve that on rFactor by linking upper and lower arm´s in the outside node. As u can imagine, the distance betwen arms should keep smaller as possible but in that way i´ve solved that kind of problem. I might be saying bull*** in jbeam terms but wanted to share it since was pretty much same problem but in other software. :eek:
     
  20. farcar

    farcar
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    Don't want to interrupt the flow of ideas, but just wanted to say from the sideline that this is an inspiring project and a perfect illustration of an on-line community collaborating to produce something very positive.

    Unfortunately whiners and critics tend to be the loudest, and positive things like this can easily get lost in the noise.

    So, thanks to cbrider and the others who are contributing with advise and testing.

    I'm looking forward to seeing this little red beast in game. :)
     
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