Oof, so worst case Nuvinci have a kind of replace when they break policy with their hubs (they break quite often on these bikes), so fingers crossed I don’t think you’ll have to shell out for a new hub. Not sure how that works on second hand bikes but you should deffo ask. Chat to a local UA / Nuvinci dealer and see if they’ll be able to help you.
Before that though remove the wheel and watch a video on replacing the freehub mechanism. @vince has just done it so can maybe offer some pointers. I’m not sure if there’s anything else to check before going down the ‘this hub needs to be replaced’ route. They’re sealed units so there’s no a lot we as users can check tbh.
Oof, so worst case Nuvinci have a kind of replace when they break policy with their hubs (they break quite often on these bikes), so fingers crossed I don’t think you’ll have to shell out for a new hub. Not sure how that works on second hand bikes but you should deffo ask. Chat to a local UA / Nuvinci dealer and see if they’ll be able to help you.
Before that though remove the wheel and watch a video on replacing the freehub mechanism. @vince has just done it so can maybe offer some pointers. I’m not sure if there’s anything else to check before going down the ‘this hub needs to be replaced’ route. They’re sealed units so there’s no a lot we as users can check tbh.
Good luck!