Ever wanted gears on your unicycle? This ISIS hub from Schlumpf Innovations and Kris Holm Unicycles is the answer and the very latest in geared unicycle technology. * New improved model! *
Lovingly crafted in the Swiss Alps, this new ISIS hub has been torture-tested by muni legend Kris Holm himself. Now geared offroad unicycles are a reality!
The latest generation of geared Schlumpf unicycle hubs is a massive improvement on previous models. Gone is the pesky torque arm, and even better the axle is now ISIS with a beefier bearing setup. This means that Schlumpf hubs are strong enough to be ridden offroad! Schlumpf Innovations teamed up with Kris Holm Unicycles for this project and designed the new hub around Kris Holm unicycle frames. New larger internal bearings improve performance.
Two ratios: 1:1 and 1:1.55. 1:1 is the same as a standard unicycle - the wheel turns one revolution with every revolution of the pedals. In high gear (1:1.55 ratio) the wheel turns 1.55 times with every turn of the pedals. This means a 24" wheel in high gear is effectively a 37.2" wheel; a 26" in high gear is effectively a 40.3" wheel; a 29" in high gear is effectively a 45" wheel and a 36" in high gear is effectively a 55.8" wheel!
Shift gears while your ride, all it takes is a flick of the heel as you pedal
Laser engraved with Unicycle.co.nz logo
Offroad-ready strong ISIS axle
High stiffness thanks to two pairs of industrial ball bearings
Hardened steel shift buttons to withstand even rough treatment
Extra wide design with 70mm distance between flanges
For vertical jumps up to 1.5m
Specifically designed to fit all sizes of Kris Holm frame from model year 2007 or younger
Latest model features new improved high performance bearing protectors and reinforced spoke holes.
Unicycle.com NZ will custom build you a complete unicycle with a Schlumpf hub. Ask us for more details. You'll get your choice of frame (KH24, KH26, KH29 or KH36), rim, tyre, saddle and ISIS compatible cranks. If you choose KH Moment Double Hole Cranks it’s like having four gears on one unicycle! Imagine that! We’ll build you your dream geared unicycle! Contact Us now for more details and a price quote on a full unicycle, or just buy the hub and build your dream unicycle yourself. Note the price below is for the hub only and does not include cranks.
Want to order a Schlumpf hub but they are out of stock? Please do let us know and we'll get one in for you!
NB: some KH frames require some minor filing on the insides of the bearing holders to accomodate the newest model of Schlumpf hub.