I think the machine is interesting. I would like to get one myself but don’t want to go through the hassle of building it. Let me know what comes of this.
I think the member Linus mentioned being based in Sweden, and he has mentioned Hakan Andersson before. Maybe a PM to him would be able to gain some more info.
Hakan Andersson used to post years ago on CF. I remember a couple of interesting discussions with him about muscle fiber types training. Searching back in the archives if still available may help.