They say for efficiency, you want to keep the RPM in the 4K to 6K range.
(Also gives maximum power, which is nice
![Wink ;)](http://brammoforum.com/Smileys/default/wink.gif)
)
My approach to the gears on the Empulse is sort of a "bracket concept":
Around San Francisco in hilly parts, just keep it in 1st, trying to keep the rpm up when creeping along slowly.
San Francisco in the flatter areas, 2nd is pretty sweet.
In more suburban areas, just keep it in 2nd for normal traffic, 3rd if can get up some speed between lights.
Upshift for highways to whatever gear centers the tach around 5K rpm.
I find that "Sport" mode yields better mileage due to more aggressive regen, provided I don't hoon around on the bike with all that nice torque available.