Originally Posted by San Rensho

...a 48/14 is too big because it "feels" too big and a 48/15 is too small because it feels too spinny. Only one tooth difference, right? Well the gear inches are 92 and 86 respectively. A huge difference in gear.

To get a slightly bigger gear, you have to go to a gear chart (or much easier, just calculate it) to find the right CR/cog combination.