Ghost or Phantom Chain ring vs adjustable tensioner. Which is more efficient?
My tandem does not have an eccentric BB it has a chain tensioner on the sync chain. I've seen some posts and threads regarding the use of "Ghost" or "Phantom" chain rings in lieu of a chain tensioner.
Certainly it is a bit more eye catching, but on the MTB forums there is some discussion, and mention of them popping out. I suppose on a road bike that is much more unlikely, but still a possibility.
From the assembled wisdom of the experienced tandemistas that frequent this forum, what are your opinions on these vs the tensioner?
I got an old D.A. RD and salvaged and idler wheel with bearing to replace the stock wheel in my tensioner. I'm wondering if a Ghost wheel might be more efficient.
What are your thoughts?
NOTE: a few of the posts in the MTB forum mentioned that the rings should be rings with out ramps. What are your thoughts on that? That will limit the selection a little.