Just order this from them...Have your looked at Staton Inc website. I'm going to get my freewheel hub adapter from there and gonna make and weld a rotor adapter to it for my brake. They may have something you can use.
![0040.jpg](https://proxy.imagearchive.com/871/871a6e806bcbc4a74de82e8824bea2f8.jpg)
3/4” ID Adaptor for freewheel sprockets .9" wide, 2 set screws, from here Staton-Inc.
thanks mplumb59