This came up on Reddit. It looks like a standard Aikema (AKM) cassette motor with an adapter for belt drive. It might be interesting to someone. I searched, but I can't find the adapter.
Don't forget that to fit a belt you need a frame that has a removable piece to get the belt on. There are belts that split, but I expect that they're expensive, and I'm not sure that I'm trust one. Some guys are doing tests with home made graphine added to their 3D Printer materials to make very strong parts, so it might be possible to cut a piece out of a seat stay and replace it with a double clamp joiner piece some time soon.
https://www.reddit.com/r/ebikes/comments/140la29
Don't forget that to fit a belt you need a frame that has a removable piece to get the belt on. There are belts that split, but I expect that they're expensive, and I'm not sure that I'm trust one. Some guys are doing tests with home made graphine added to their 3D Printer materials to make very strong parts, so it might be possible to cut a piece out of a seat stay and replace it with a double clamp joiner piece some time soon.
https://www.reddit.com/r/ebikes/comments/140la29