How can this happen.

Cheers mate.

I want to customize the slider/controller but where do I find it in SP UI? Activating the torque joint, I get the usual values etc but not the part you mention, quote:

The slider command has 4 arguments to it:
slider(name, value=0.5, min=0.0, max=1.0)

How do I open this line?

Anton, you mention changing the slider attributes before you mention the plugin. This indicates to me that one can change the slider attributes some-where else. If so, where, exactly. I have loaded the Attribute Inspector plugin but that doesn't seem to do it as easily as you suggest.

Happy to be of service. Well done. What program did you use to make the video?

I'm no expert but, just as you can't copy joints and expect them to work, perhaps there is a limit to the number of times you can drag a copy. Why not try a smaller number of links, then copy that entire length rather than just to last 2 links or so. You might have to change your model status to 'compound 2'. As I said, I'm no expert.

Edit. make sure your individual links are solid.

I'[m not sure if joints and springs will join together. If they don't, place a small block between them to anchor to. That make sense?

If I understand your question right, you need the spring to follow the arc of the control stick end. Try putting a hinge at each end of the spring so that it can change it's orientation in space as the stick end moves through it's arc. You may need a mount of some sort to connect hinge/spring/hinge joints.
Does that make sense to you?

I have a similar problem to Redblock. Where does one change the world scale, and ditto the query about over-sized joints when working on small dimension models. I'm working on a bicycle chain of approximate true size.
Anton, tried your idea but nought came of it. BTW, using SP3.5.6 in SU2014

Thanks Anton. Not quite right but I'll have a go myself now that I've up-graded to SP3.5.6
I notice that I have to modify some parts so will changing them, change your animation. ie, hide the control lever that now comes through the side of the fuselage due to a narrowed nose section, or adding the cut-outs in the floor to accept the wheel?
As for the mains, I thought I left an angled torque drive to show rotation axis. Never mind, as I said, I'll give it a go myself.
Once again, cheers.