My present setup is a chainset with 53 & 39 chainrings and either a 12-25 or a 12-27 9 speed cassette.
If I wanted to optimise the gearing fot a 10 mile time trial at Holmwood, is it worth changing the small chainring to a 42 or a 44 tooth?
I'm a light rider and more of a spinner than a big gear pusher.