Originally Posted by
williaty
I have been looking but so far everything I've seen expects to be mounted to the rear derailleur dropout, which is obviously busy holding the RD.
I've seen recumbents with what appeared to be an additional rear derailleur cage mounted to the boom tube. It helped to keep the chain off the ground and articulated to take up more chain slack. Looked sort of like this:
(from https://softsolder.com/2010/09/01/im...ain-tensioner/)
It was a neat solution, I figured it was a pretty common thing to do. Maybe not?