Originally Posted by
Camilo
Interesting... Is that a 58t single crank? Do you know what the BCD is?
When I did a quick search for chainrings for a 130 BCD crank (which I assume is what the standard triples are), I only saw 54t as the largest.
No, that's a standard 30/42/52, 130 BCD triple with the 52 replaced by a 58. I had to go to aliexpress to get it because I wanted it to be pinned and I couldn't find anything domestically. 42/58 seems to shift OK, but the derailleur's not made for that combo and will probably not shift directly from 42 to 30. If I need the granny (unlikely around my home range at least,) I'll have to start in the big ring and shift all the way down at once.
Edit: Nope, it won't shift from 42 to 30 because the shift ramps on the front derailleur don't go down far enough. But it shifts from 58 to 30 just fine. I rarely use the 30 (I can get down to 25 gear inches without the granny ring) so I'll probably leave it as-is.