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Jan Heine, head of R&D at Rene Herse Cycles, explained: “One-by drivetrains have simplified bicycle gearing, but it’s time to go a step further. Most cyclists need only three gears: one for uphills, one for flat roads, and one for downhills. The steps between these gears tend to be relatively large. Large steps between three gears are easiest to accommodate on the front, with a triple crank. So we’ve effectively turned the one-by around and put all the gears on the front.”

The Floating Chain system uses a triple crank and just a single-speed freewheel on the rear. As an added benefit, front derailleurs are lighter, more reliable, and less prone to damage when the bike falls over.

In the interest of keeping the system simple and to reduce mechanical resistance to a minimum, there is no chain tensioner. The chain length is selected for the big chainring, and it’s allowed to float freely when it runs on one of the smaller chainrings. There is no need to keep the lower chain run tensioned, as long as you don’t backpedal for more than half a revolution of the cranks.

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