Heiarchy to correctly join
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Hi! New to these forums. I recently discovered sketchyphysics and while I've gotten simple things to work like a wheeled car or a piston, I'm having trouble figuring out how to connect more complicated systems. While I can attach a wheel to a platform using a hinge, when i try and attach a bar to the wheel using a ball joint, it causes the hinge to detach from the platform! Etc. etc. etc...Is there a heiarchy that I'm not understanding to how joints are attached to components, and components are grouped together? Can anyone please explain this to me.
Much appreciation, Forcemaster2000
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Yeah, joint hierarchies are confusing. I have trouble with them too. I hope to make them easier in the next version.
From your description I cant tell exactly what is wrong. Can you post your model?
Chris
@forcemaster2000 said:
Hi! New to these forums. I recently discovered sketchyphysics and while I've gotten simple things to work like a wheeled car or a piston, I'm having trouble figuring out how to connect more complicated systems. While I can attach a wheel to a platform using a hinge, when i try and attach a bar to the wheel using a ball joint, it causes the hinge to detach from the platform! Etc. etc. etc...Is there a heiarchy that I'm not understanding to how joints are attached to components, and components are grouped together? Can anyone please explain this to me.
Much appreciation, Forcemaster2000
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Thanks for the quick reply Chris!
Here's what I've got so far, I haven't moved on with it, since I keep running into this problem. I can attach the hinge to the platform, I then group the two wheels with the hinge. I can then attach the two ball joints to the wheels...then my problem starts. When I try to get the two "poles" attached to the ball joints, the wheels and hinge become unglued from the platform. No approach I've attempted has yet to work. Greatly appreciate the help on this!
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@forcemaster2000 said:
Thanks for the quick reply Chris!
Here's what I've got so far, I haven't moved on with it, since I keep running into this problem. I can attach the hinge to the platform, I then group the two wheels with the hinge. I can then attach the two ball joints to the wheels...then my problem starts. When I try to get the two "poles" attached to the ball joints, the wheels and hinge become unglued from the platform. No approach I've attempted has yet to work. Greatly appreciate the help on this!
The problem is the joints are grouped with the wheels. Open the wheel group and explode both the wheels. SP can only "see" one group deep.
BTW balljoints are not very stable. You are almost always better off with a hinge.
Chris
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