Hi all, I've been looking around for a simple software to test mechanical assemblies, typically ones using a motor to drive some gear or pulley system. This is for garage scale projects, nothing really big or really small. Ideally it would be something that would be able to give me the load required to do some work. Say, if I wanted to use a motor to turn a gear that would move something that ultimately elevated something with a given weight, it would be smart enough to calculate the load on the motor. It could be very diagrammatic for my needs, I don''t need to see representations of the actual parts, but I think would need to be able to operate in 3D. A rigid bar could just be a line, a gear could be a circle of a certain diameter, a cable could be a line, joints between parts could be represented by a hinge element that constrains the rotation to a given axis, etc. I guess it would basically be inverse kinematics that could analyze and report the forces acting on each part of an assembly and show how it all moves. It seems like something must be out there like this, but everything I see is way more than I want to bother with. Solidworks, MCS Adams, etc. I doubt something that simple but so complex exists, but any help appreciated.