Gear set-up

Anyone got a good method for adding functional, rotating gears?

I think this should work in the bge to (maybe didn’t test it) link

That video helps alot but only rigid body constraints work in bge. I can’t use copy rotation constraint in the game

You could copy the orientation using python.

you could use bone constraints but there have to be all in one armature!
(multiple objects can be parented to one armature)