Can I can the DMR chain tensioner too here?
My SS convert MTB runs the DMR tensioner & I’ve had heaps of problems with the mounting alloy bolt. It shredded the thread so I used a mount bolt out of an old rear derailleur I had – metal.
The DMR tensioner does not take advantage of any of the common rear derailleur points on the frame to provide tension & relies on the tightness of the mounting bolt to the frame (which is soft-ish alloy & had stripped it’s thread).
The little cog on the tensioner is now the loudest thing on the bike when not freewheeling.
My SS MTB is a pavement commuter so the gearing is a tallish 44/18.
http://server6.uploadit.org/files/Marx748-200604ipost.JPG