Originally Posted by
Cyclespanner
What would be involved, putting an AW hub into such a frame designed for a derailleur set-up?
Surprisingly, perhaps, not much.
Sturmey offers a variety of 3-speed shifters and a collection of cable stops & pulleys to get the shift wire from the 'cockpit' back to the hub.
There are two different widths of anti-rotation washers: the 7.9mm (example - HMW155) and the 9.5mm (example - HMW494) for different width dropout slots. The derailleur bike probably needs the 9.5 version.
If you have the narrowest axle on the three-speed hub, you might need to move the anti-rotation washers to the inside of the dropouts to match your OLD.