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    Tank Suspension

    Scheduled Pinned Locked Moved SketchyPhysics
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    • H Offline
      hvypetals
      last edited by

      Man ive looked over your fix and tried to make like-for-like changes to the left side only, on my original, and when i play it just collapses on the left at the double hinge with the wheel up in the air.

      Sighs.

      Ahh im trying to compare versions in the outliner to see what i did wrong - very interesting

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      • C Offline
        camokid11
        last edited by

        @hvypetals said:

        collapses on the left at the double hinge with the wheel up in the air.

        what did you do to copy it to the left side. if you used the scale tool then it can flip it or mess it around. if so what you need to do is explode the group or component and then re-group it. that way it wont flip.

        if thats you didnt use the scale too, try seeing if the bars are connected to the right hinge.

        if all else fails, ask hobbnob.

        If you can read this, thank a teacher.
        If you can read this in english, thank a soldier.

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        • H Offline
          hvypetals
          last edited by

          nope i didnt use the scale tool. as soon as i add the second hinge where the bar connects to the chassis - the tire flys off now.

          i exploded the arm, which was in two components, and regrouped it as hobbnob did.

          i cant seem to add the second hinge without things falling apart.

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          • H Offline
            hvypetals
            last edited by

            Hey wait a second - was something scaled? lol im such a newb its horrible

            i notice when i right click on the hinges hobbnob left "reset scale" is available.

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            • H Offline
              hvypetals
              last edited by

              woo-HOOO!!! I got it working!

              I just started over. I mustve had something funky going on in my setup hobbnob your were right.

              When i deleted all the joints, exploded the tire and the bar and then regrouped them both, then added new joints like you explained and another joint for the wheel and viola - suspension.

              man.. i was like a mad sceintist there for a while trying to figure it out ๐Ÿ˜„

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              • C Offline
                camokid11
                last edited by

                lol, dont worry, we all get like that at some point when we find a break though. its good to hear you've got it working, its all part of the learning.

                If you can read this, thank a teacher.
                If you can read this in english, thank a soldier.

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                • H Offline
                  hvypetals
                  last edited by

                  I am going to try and add 5 off these arm and wheel assemblies per side. I have made a component out of the interior wall and arm sockets for the 5 wheel and bar assemblies.

                  But Im curious what would be the best way to proceed? These are my thoughts
                  1.) make the previously mentioned wall and socket component a group
                  2.) bring in the physics copied (now saved component) arm n wheel assembly with joints
                  3.) explode the arm and wheel assembly component then physic copy the 2 a total of 4 times
                  4.) explode again both and redo the joints

                  THEN..and here where i think my problem is

                  Then I want to somehow bring that wheel well now with the torsion arms and wheels (assuming it works) and attach it to slot in my tank hull proper.

                  How do I bring it there as a component and then explode the hell out everything all over again and reattach? Or should i bring into the tank hull scene as a model and then intersect the wheel well now with wheels with the tank hull proper?

                  does this make sense what i just said?

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                  • C Offline
                    camokid11
                    last edited by

                    errrrmmmm, so are you wanting to copy the arms of the suspension and the wheels.

                    if so what i find the easiest is to copy it without any joins, so then you can copy it however many times you like and then attach the joints.

                    or you could use physics copy to copy them with the joint, and then explode the groupe an reconnect the joints (but im not to sure with this method, i havnt used it must before)

                    -- the way ide go around it, is copying the arm and wheel, then get rid of all joints inside the arm and wheel, and disconnect them from any other joint (so the arm and wheel have no joints inside or are connected to any).
                    -- then copy and paste the arm and wheel together and place them where they are needed.
                    -- then finally remake all of the joints again and then re-attach them.

                    if you get confused with this method then just use your own and take your time. and remember save a copy before you start so if it goes wrong, you still have something to go back on.

                    If you can read this, thank a teacher.
                    If you can read this in english, thank a soldier.

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                    • H Offline
                      hvypetals
                      last edited by

                      Thank you kindly.

                      Do joints export? Like to 3DS for example?

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                      • H Offline
                        hobbnob
                        last edited by

                        the physical joint will, but the mechanics of it won't

                        My WIP Thread:Here

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                        • H Offline
                          hvypetals
                          last edited by

                          groan... ๐Ÿ˜ž

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                          • H Offline
                            hvypetals
                            last edited by

                            ok camokid i read your advice and i think i will do it that way

                            this is a pic of where i am right now, the hull and turret are hidden and i cut the wall off inside the armor plate. attachment tests are coming up


                            wheel well fin.JPG

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                            • H Offline
                              hvypetals
                              last edited by

                              Any chance the selection cut tool will mess with my joints. I want to cut away the side skirts before attaching the joints so i can see a little better.

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                              • C Offline
                                camokid11
                                last edited by

                                errrrrrmmmmmm, to be honest i dont know, cus i make my physics tanks differently and i dont use that feature.

                                Normaly what i do when making tanks is make the full static model first and all in place. then i split it up into different "physics parts" (what i call for all different features like wheels, doors, turrets, ect...)

                                Then i work on each part induvidually, so the wheels are away from the body, and the joint are still visible, and nothing is locking the view.

                                To be honest i see no reason why the selection cut would interfere with the joints. Another option is making a line with the "line" tool and make a mark of where the part was and move it away so it doesnt block the part. then move it back after.

                                If you can read this, thank a teacher.
                                If you can read this in english, thank a soldier.

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                                • H Offline
                                  hvypetals
                                  last edited by

                                  @camokid - i followed your advice almost exactly thank you for suggesting that.

                                  you know I believe i made a mistake. i put the origin of axes for the main group (my hull) at center hull bottom but.. i shouldve put it at ground level instead i put it at hull. now when the armor drops the wheels sort of hang.

                                  duh! Now what. I cant explode without everything falling apart. ๐Ÿ˜ฎ

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                                  • H Offline
                                    hvypetals
                                    last edited by

                                    Ugh Im getting stuck in the mud. My double hinges are turning inward.

                                    I dont know what Im doing wrong and the tank is way to big already without the turret and gun. Oh well i guess this is good practice.

                                    I would have provided the model in a zip but its so big.

                                    ๐Ÿ˜•


                                    tank bounces then all the legs push up and in

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                                    • C Offline
                                      camokid11
                                      last edited by

                                      right, rom what it looks like, it could be the collision geometry.

                                      so what this is, is a normal physics box acts like a box, however when you make a complex shape, like a hole for a pin to go through, the collision geometry will still think the object is a box so nothing will go through the hole.

                                      so the possible problem is that youve made the whole body as one model and grouped it all together. this means that the wheels (or suspension arms in your case) try to move outside the geometry.

                                      its a pain to tell you how to fix it, so could you email it to me (Taylor.c.123@hotmail.co.uk) and ill fix it for you. the only problem with this method is, cus it adds more objects and stuff, it could add lag (but in the past ive picked up tips to cut lag).

                                      If you can read this, thank a teacher.
                                      If you can read this in english, thank a soldier.

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                                      • C Offline
                                        camokid11
                                        last edited by

                                        @hvypetals said:

                                        Oh well i guess this is good practice.

                                        ha, dont worry we all make mistakes. and once you find one problem, then that means you stop doing it in the future. trust me, the more you make, the easier it becomes. (ever heard of meshing, its making propper 3D planes and stuff from 2D prints, On the 3D warehouse search Tu-160. better yet, here a link: http://sketchup.google.com/3dwarehouse/details?mid=df3944a1135871f5d40e00f72aac160e)

                                        That took me about 2-3 weeks to make. now i could do it in a few days.

                                        If you can read this, thank a teacher.
                                        If you can read this in english, thank a soldier.

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                                        • H Offline
                                          hvypetals
                                          last edited by

                                          Thanks camokid Im going to send you the file to your email when I get home in about 5 hours I hope thats okay.

                                          I think I understand what your saying. I did make these holes for my torsion arms. Last night I tried to seal them up but had the same issue. Im going to look at the example your provided as well. Although I have not heard of meshing but it sounds interesting.

                                          I really appreciate all the help.

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                                          • H Offline
                                            hvypetals
                                            last edited by

                                            Great bomber btw! Reminds me of my Falcon 4.0 days.

                                            What is this meshing? Im going to look it up.

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