On the street, I never change gearing. If I want more acceleration, I will just downshift. I have always thought it was funny when people change sprockets because they want more acceleration, but yet they ride around with the bike at 5k-7k RPM all the time (mostly referring to I4's that are meant to stay above 10k RPM).
I have never seen a need to change gearing on a street bike, especially a Liter bike.
It is even more comical when we are talking about a "necessity" to change gearing on a bike that makes 200hp and 100lb/ft of torque. If somebody needs more gearing with that kind of power/weight ratio, they should probably work on keeping the bike at the optimal RPM's.
On the track, there is no such thing as "right" gearing. Gearing, like suspension setup, changes from track to track. The goal is to avoid being "between gears" as much as possible, to be able to finish out straightaway's in a particular gear without having to upshift and then downshift 50' later, to be able to maximize corner exits and to eliminate gearbox manipulations when possible. And the gearing it takes to accomplish those things will change based upon track layout.
