silverbullet
New member
Same reason you shift gears in a car. Your motor works best in a certain range of rpms.
Most humans generate maximum horsepower between 90 and 105 rpm. Shift gears to stay in your power band as terrain and wind conditions change.
Most humans generate maximum horsepower between 90 and 105 rpm. Shift gears to stay in your power band as terrain and wind conditions change.