Originally Posted by
taras0000
A chainring is one thing. You typically have around 3-4x more teeth in contact with the ring than a cog would, yet they both have to deal with the same amount of force being transmitted through them (via chain tension). Add the differing leverage ratios due to the differences in diameters, and the amount of force on each individual tooth is compounded many times.
To me, passing on a carbon cog would seem to be a no-brainer. On the other hand, I would test out carbon rings if they were available to me.
I'll admit I have no knowledge on the subject of carbon cogs, bit surely it's not in an effort to save weight as it would be one of the most negligible gains for obvious risks.
My thoughts would be along the lines that they might be more efficient/smoother or something along those lines, given the kgf guys do focus on small improvements