Hi all,

I have modelled some intake and exhaust valve springs using SW2016. These are simple coil springs that are flat at each end so that they sit nice and perpendicular between the valve housing head (cast in cylinder head) and the valve spring collet. Both the housing head and collet are slightly larger in diameter however and I need to mate the spring so that it remains within the constrains of these items. My first mate on each is to mate the flat face of each end of the spring to each face of both housing head and collet obviously, but now I almost need a mate to keep the spring in a central (axis) position.............

Any suggestions appreciated.

Dave.