Assuming gear ratio (between chainwheel and cog) is the same ...... big is (overall) better!
more loading on small cog/chainwheel (and chain) plus less teeth (per revolution) to withstand the load. Also, greater 'movement' of chain with the reduced diameter (REF: 'larger jockey wheels').
Thanks mate, appreciate the input! That makes sense - will this mostly be measurable as reduced wear of the components along with a slight efficiency increase?
Assuming gear ratio (between chainwheel and cog) is the same ...... big is (overall) better!
more loading on small cog/chainwheel (and chain) plus less teeth (per revolution) to withstand the load. Also, greater 'movement' of chain with the reduced diameter (REF: 'larger jockey wheels').