Originally Posted by
AeroGut
A Tiagra triple crank is another way to go. There’s not a big difference in quality between Tiagra and 105, and the triple can be set up as 26/39/50 to give a really wide range, especially when paired with an 11-34 cassette. I’ve heard of folks even using a 24 small ring, but haven’t tried it myself. I use the 26/39/50 and it works fine even though I think it’s technically out of spec for the derailleur.
Its been a while, since tiagra went to 10 speed, but at that time, they changed the bcd of the crank, and 30 became the smallest granny you could put on.
I'm fairly positive of this, but check out out.
my fsa 10 yr old 50 39 30 can take a 26, but I'm fairly sure not a 24
For riding with a 39 or 40 mid ring loaded, I just find them too high.Have ridden both loaded and why I see a 36 as a better choice.