I have the external gear box and looking at Van Nicholas web site Bushnell eccentric BB. The hub has a disc on it at the moment can I just remove that and use the hub without it. It is in a 700c wheel at the moment so new wheels would be needed. After a lot of searching I found this.
"Hehe, well, even if you did find a picture, it would be difficult to see much. And it is hard to find the information on the Rohloff site, but you can find it under Speedbone. You are half-right. A speedbone is not required, however the CC OEM2 axle plate and locating bolt is required.
The locating bolt screws into the top hole on the left dropout, and the slot in the end of the OEM2 axle plate engages with it. All very simple and elegant, like the dropout themselves, which are a work of art."