somervillebikes
Fender is attached at only one point - the crown
Fork crown has a 6mm threaded plate for a fender mounting bolt. If the fender is dimpled at the attachment point to the crown such that the dimple is parallel to the crown, the fender will hang stably in place, concentric with wheel. As you can see here, the dimple isn't even visible, as it is confined to the shape of the large rubber washers.
This minimizes stress risers at the crown attachment. The next photos in this set illustrate this.
Fender is attached at only one point - the crown
Fork crown has a 6mm threaded plate for a fender mounting bolt. If the fender is dimpled at the attachment point to the crown such that the dimple is parallel to the crown, the fender will hang stably in place, concentric with wheel. As you can see here, the dimple isn't even visible, as it is confined to the shape of the large rubber washers.
This minimizes stress risers at the crown attachment. The next photos in this set illustrate this.