OK, there is a large collection of connector elements that would satisfy your requirements. Try to make a rough sketch, maybe we could chose proper solution.
aaput
Hello,
I kindly ask for a tip. On the attached image we can see points A, B, C, D being vertices of a regular tetrahedron. In fact these points denote the center of mass of respective rigid body. Point E is a small rigid body (relative to the others) playing role of the center of mass of whole...