pic: Kitbot Chain Tensioner 2

[Doug G]

Originally Posted by patrickbosch

Ha, we had this idea as well, except it was cammed delrin for a tensioner. It appears as if it worked very well, did you have any problems keeping the tensioner from slipping?

They rarely slipped. We thought we'd have to use special lock washers to keep it from slipping but never did they seemed to hold just fine. Truth be told that we always had them fully engaged which means the normal force from the chain on the tensioner is inline with the bolt, thus reducing the torque on the tensioner.

I really like using the UHMW PE. If you have never used the stuff, it feels like greasy PE.