Originally Posted by
mrfish
Regarding the chain, the 10 speed is as strong as a 9 speed chain. It just wears quicker (all things being equal) as it has smaller bearing surfaces. In my experience chains last a decent amount of time as long as you buy reasonable quality and keep everything clean. Campag chains are amongst the best.
Could you explain how the bearing surfaces are smaller if the inside width of the chains are the same?