I have a shimano nexus 3 speed hub and it keep slipping. No matter how much I tighten the bolt, it will slip at some point. It only happens when I stand up and put a lot of force on the pedals.
Is there something I can do to stop the axle from slipping? I would love to be able to climb hills on 2nd while standing and not having to put it in 1st and slowboat it up.