Since changing to a 39/53 from a 42/52, I fear this could be too short when in "big to big" cogs. Should I worry about this or leave as is? It all works fine, moves though all the gears smoothly, but I still want it to be correct.
Might apply to road or mtb triples with long cage mechs, but for a road double, short cage, I'd have an extra inch of chain in there. Too short chain can (in some cases) give you less than optimal shifting and faster wear.glpinxit":20iwbe0k said:the right length is as short as you can go and still have observable deviation round the derailleur pulleys.