Originally Posted by
SpeshulEd
Big ring always, little ring is for steep or long climbs.
Depends on the wind and how fresh your legs are. Not just terrain.
If you're deep into a century and the wind picks up and is a typical Great Plains headwind...you're not going to be using that big ring. AAMOF, odds are you'll be looking for your granny gear. I was doing an 80 mile ride out in a farming valley that acted as wind tunnel with no air brakes...barely able to spin a 39/25 on a pan flat road due to the 30MPH sustained headwind.