Tank Suspension
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No worries mate, I've got a bit of time on my hands so i figured I may as well help out a bit.
The model has a couple of problems, I see now how you have configured the hinges and groups on this and The main problem is the lack of symetry. when I remade the hinge joints connecting the bar to the body I found out that the two sides of the tank behaved very differently. I don't know why this is, because I have rebuilt everything and it doesn't make a difference
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Well I fixed it, but in all honesty I don't know what caused it. I fixed it by exploding the bar all the way to it's bare entities, and then just regrouping it with the hinge. I then added a second hinge above the first and then it worked like normal suspension. Heres the file, thanks for the challenge
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Wow you did it! Thanks my friend this is awesome. I never wouldve figured this out on my own.
How come the two hinges dont cancel themselves out?
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honestly i don't know, it just works and i'm grateful for it
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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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@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.
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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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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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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
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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.
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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 jointsTHEN..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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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.
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Thank you kindly.
Do joints export? Like to 3DS for example?
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the physical joint will, but the mechanics of it won't
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groan...
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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
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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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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.
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@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.
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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.
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