Originally Posted by
SylvainG
Genuine question, why does the number of cogs in the cassette limits the choice of crankset?
So I googled it and got my answer. It's basically the distance between the chainrings that is shallower on a 10 and 11 speed crankset (thinner chain) than on the 9 speed crankset.
Question becomes, if you get a crankset with the same number of bolts, can't you replace the spacers on the new crankset with the spacers on the old one to get the correct distance between chainrings?