My previous nexus 7 gear hub completely broke down and i decided to replace it with a second hand wheel. I took my bike apart, and used the sprocket gear of my old wheel on the new one. After that i reassembled the bicycle. I seem to have installed it correctly but whatever i do it will not shift way from first gear. I took the wheel apart again, and reinstalled the external shifting assembly but that didn't fix it. While reinstalling i noticed something that seems odd to me. It's about the part where the external shifting assembly hooks onto the gear hub. I always thought that the part that it hooks onto should have some spring like tension on it. But it doesn't.
Three questions: Should there be tension on the part that the external gear assembly hooks onto? If so, is that fixable, or did i buy a lemon?
A little unrelated, but if someone happens to know i can use a nexus 7 SG7-R42 gear shifter on a nexus SG7-R46, than i would love to know that too. (I tried googling that but got nowhere.)
Any and all help is greatly appreciated!