They are always sold with wrong sprockets. The high gear is never usable. Number 2 gear is connected directly, and so it should be the default on no-wind flat road. Then it lasts forever on flat country like holland.
I have 420 mm folding bike with Nexus-3. The correct ratio is less than 2:1, which meant changing both sprockets to smallest and largest available. I do not even know what to do with 622 mm wheels.
