Okay,

So I've dinglesped my spare bike. I left the 52/39 on the crank and put a 17t surly cog on the back with a derailleur as a tensioner.

The cog is mounted at 46mm chainline to match the outer ring (where the most time will be spent). Both rings have been used but never had an issue when I ran them with as 7 speed. Chain and cog are new.

Paul components markets their tensioner as a dual speed tensioner, and should be vertical in the small gear. My chain length is set to imitate that.

When I first got on the bike, it skipped in either gear. I fiddled with rear derailleur position and seem to have gotten it to stop skipping in the big gear.

However, at the extreme chain angles seen on multi speed bikes, how can I be seeing chain skip from my setup? I also don't see how tension can be an issue. I can stomp on my 11t without seeing skip. In my head that should be a more extreme scenario with about the same chain angle but less chain wrap.

I'm scratching my head here trying to figure out what I'm missing.