> "there is only one multi-geared commercially available unicycle hub, and it only has 2 gears, and costs $1500 (Schlumpf drive)"
The Kwiggle folding bike in Germany[1] took over manufacturing of the Schlumpf drive in 2023[2] and uses it for their 6-speed option. It's in the bottom bracket and shifts by hitting the axle left/right with the heels. (costs ~€2000 and surely the front gear is not three quarters of that?).
[2] https://www.drive-mobility.com/en "We, KwiggleBike GmbH, have been managing the business of Haberstock Mobility GmbH since 01.04.2024. We have been manufacturing all Schlumpfdrives since mid-2023"
The Kwiggle folding bike in Germany[1] took over manufacturing of the Schlumpf drive in 2023[2] and uses it for their 6-speed option. It's in the bottom bracket and shifts by hitting the axle left/right with the heels. (costs ~€2000 and surely the front gear is not three quarters of that?).
[1] https://www.kwigglebike.com/en_US/
[2] https://www.drive-mobility.com/en "We, KwiggleBike GmbH, have been managing the business of Haberstock Mobility GmbH since 01.04.2024. We have been manufacturing all Schlumpfdrives since mid-2023"