Hey! This thing is still a Work in Progress.
Files, instructions, and other stuff might change!
Ball Link
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Published on May 5, 2011
This thing was Featured on May 13, 2011
Description
This thing is to link two chassis to make a 4WD vehicle, still need a bit of work because they tend to touch the ground so I needs some kind of lock to prevent this.
Instructions
No instructions provided.
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Austin
on
May 6, 2011
said:
Also, based off newer trains that use the same method: Add two more wheels to either end, and then add more cars!
Although, if the point is to off-roading, then you probably need to go with the clylindrical connection. :-P
MaskedRetriever
on
May 6, 2011
said:
Zero z-freedom answer: Change the geometry from sphere to cylinder. That eliminates the ability to rotate entirely.
More sophisticated answer: cut away part of the sphere on the ball top and bottom, then fill in /slightly less/ of the socket top and bottom. This will yield a maximum angle of "vertical" rotation.
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I forgot to include the Scad files, here they are in case you want to play with them