Originally Posted by
yellowesty
Does using a 14T front sprocket (and the appropriate rear sprocket) waste more power than using a 18T front sprocket (and the appropriate, but obviously larger) rear sprocket? For the moment, let's ignore clearance issues and inertia issues and just focus on power transfer.
If the chain has parasitic power loss because it bends around sprockets, one might expect that smaller sprockets (with tighter bending) would cause greater power loss.
Do they? And is it significant (i.e., > 1%) ?