Originally Posted by
jamesdak
In my experience with lots of triples over the years the only "shifting issue" is the person setting up the FD. Just sayin'
Another reason for a 1X because even pros get chain drop. No FD, no front shifting issues and a narrow/wide ring is much better at holding a chain.
"Inner" chain rings are not symmetrical on higher end front ends. The FD is also a bit different. I believe this is done, because the manufactures think it works better. I think it works better (than a neutral middle).
Other issues can be bolt circle. A 110 BCD with 52T - small can get modern thin chains wedged in-between rings. Some designs prevent this.
You have to work at it to get a triple front with an 11 rear that does not nearly overlap in several gears. Our tandem had your pictured crankset with two big rings and a smaller (25T?) bailout gear. It did not shift nearly as well as the Dura-Ace 2X stuff, not even close. But for us, a 1X and 11spd on the rear is fine. We can adjust 5 RPM in cadence. I understand the need for low bail out gears, and for really high ones. I don't understand the need for 33, or even 22 across the range for much anything.