- Y. O.
And same goes for the rear gears. This should be determined by the speed you are trying to maintain. If you are starting to slow with hard pedaling, continue down in gears all the way to the 34t before you stall. Your gear shifting and PAS selection should stay ahead of the current situation keeping the pedaling relatively easy. More easily done when you gain some experience. Keep in mind that shifting gears under heavy load is hard on the drivetrain.If eco 1 is too weak, keep increasing the number until it works.
If none of the eco modes are strong enough, try all of the sport modes in increasing order