Originally Posted by BMonei

Gear mashing is pointless. Speed gains you nothing but entertainment. The ideal gear for someone in shape riding fixed on rolling highs depends on their ability to climb. I run 39/16 which comes out to 64" or a 4.8 ratio in a relatively flat area. I'd probably run a tooth size smaller in the rear if it was hilly, making those descents a lot easier to manage without a brake.

EDIT: I spin out somewhere in the lower end of the 20's MPH with some absurd cadence rocking 25c Hardcases. Just for reference.