Originally Posted by
idiq
Failure was your only option. How would I have even said that it's in a trainer if I didn't look at the picture? And I did read the post, which said that the tensioner is not on there now. You can run tensioners with QR skewers, I'm not saying it's smart, or appropriate, but it can be done. In fact, the tuggnut comes with a 6mm adapter for this. You can put a bike with a bolt-on hub or QR hub in a trainer, the bolt-on will not function properly, but that's not the area of clarity here, it's what is actually happening in the picture. Now, I will grant that I was not aware that the Alfine locked in place, but I stand by my comment, and still stand by it. I apologize for offering any advice, as your contribution in this thread has clearly been nothing short of godlike.
Chill pill. A tuggnut or other "chain-tug" style tensioner is not what this thread is about. The picture shows a bike with vertical dropouts, so a chain tug isn't necessary and won't do anything. This thread is about a singleator style tensioner used for single-speeds with vertical dropouts (as shown).
OP: "push up" mode is when the jockey-wheel of the tensioner is underneath the chain, pushing the chain up. It provides more chain-wrap around the rear cog and looks better.
Push up (a zip-tie helps):
Push down:
