It looks like it’s been a couple years since Frank was active on the forums but have you tried to send him a Private Message through this forum yet? It’s possible it’s still hooked into a current email address. It looks like Frank’s web site was hosted on a provider that no longer serves it. I did find some interesting CAD movies:
In the movie titled “Ansicht1_min.avi” it shows an arm coming off the hub. I’m not sure what the purpose of this is. That design also has sealed bearings on the axle. The 3.8x Sturmey-Archer hub that JR Drift Trikes commissioned (and I’ve pre-ordered) has the fork connecting to it similar to that little arm.
Hey Waaalrus, thanks for the link to these animated illustrations. UniFrank did some pioneering work here. We’re looking to advance this art beyond Schlumpf’s 2-speed hub and apply it to the larger bi-cycle market.
Cool. This sounds pretty much like the inverse of what I proposed in this thread (You: take a unicycle wheel design and lay it down to make a bike, Me: take a bike design and stand it up to make a unicycle). Let me know if you need someone to stress test it by riding the wheel like a unicycle (with full body weight on it) or to demonstrate a wheelie. I would definitely be in the market for such a hub as long as it freewheels.