Originally Posted by
ISPringle
My hope is that a geared bike will allow me to keep my high cadence up hills which hopefully will translate into a more consistent pace instead of these huge changes going between 20-25 on flats, 18-22 on rollers, 7-12 on climbs. Obviously going down hill will still have a large cadence difference because I hit 50+ on a regular basis.
A great part about riding geared is the ability to keep a consistent cadence. I like to ride at a pretty high cadence, nearly 100rpm.
Your speeds won't change that dramatically, but they will a little. It's not like you will suddenly be able to produce more power, and you certainly aren't any more aero or light with a geared bike, so those speed ranges you posted above still apply.
What you'll learn is that there is a (small) variation in power over a given time period, with respect to cadence. The ability to hit those sweet spot cadences, and hold them, is what will make a difference over the long haul.