I am trying to change from a derailleur system to an internally geared hub (Sturmey Archer S-RF3 3). However, it turns out that the dropouts of my frame are too short for the anti-rotation washers which were delivered with the internally geared hub.
The original anti-rotation washers:
The dropouts with the internal gearhub and without the anti-rotation washers:
I already got new anti-rotation washers which are much shorter but even they don't really seem to fit:
attached to the gear hub and in the dropouts:
It's hard to see but unfortunately the dropouts are super short:
Is there a way how I can safely attach the internal gear hub to my bike?