TubeNet

http://www.mcmaster.com/#compression-springs/=ozdfxv

I've used the high load compression springs in that application. They are certainly expensive but fancy over-engineered things cost money I suppose.

Joe,
The real trick here is to stabilize the link without adding any friction to the link. If you want something to keep the linkage quiet... make a small felt washer to take up the space.

That's a great idea! Thanks for sharing.

I feel like I have seen that somewhere before but I can't figure it out.