Just a warning to those with Tandems. I know we were offroad but 48/36/24 up front and 11/32 for the rear on 9 speed. We still need a lower gear so I put on an 11/34. First trip out and we bent the 34 ring. It just folded. Thought it was a weak one and so did the shop. FOC replacement and we bent that aswell. This was an XT cassette that are a bit lighter than the usual LX we used but the 34t ring is just a bit too "Exposed" and gets no support from the 28t next to it. We have gone back to the LX 32 and not bent another one--YET.

And for me- I like the sound of the Tiagra 12/30 for use with my triple. 5 years ago I went to Mont Ventoux and used 28/28 as my lowest gear on a triple and it worked. That 1 to 1 ratio has an appeal to me as I know it works.