Quote Originally Posted by SammyDV View Post
750km: One screw and its bolt at the sprocket (back wheel) slip.
Wheel was dismantled and sprocket detached today. The bolt is secured by two nuts (front and back of the sprocket). Problem was part of the bolt's winding was filled with hard glue and "dirt". This produced enough resistance and even with an impact wrench the screw stopped a few turns too early.
Seems to be that at the factory the glue was added but hardened already before the screw was attached. Hence a Quality Control issue...

Below some photos of the socket and wheel.
Sprocket_Inside.jpg
Sprocket_Outside.jpg
Wheel_JerkDamper.jpg