Pinion sealed gearbox offers an alternative to those darn derailleurs
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The P1.18 can’t simply be installed on an existing bike – the frame has to be designed around it
Gear changes are activated via a SRAM-like grip shifter, are reportedly “lightning fast,” and can span several gears in one shift
The gearbox has also found use on commuter bikes
The P1.18 kit also includes custom cranks
The P1.18 features 18 evenly-spaced gears
The Pinion P1.18 sealed gearbox for bikes is an alternative to derailleurs or hub transmissions
Because it can only be built into dedicated frames, the Pinion P1.18 isn’t currently available to the general public
The Pinion P1.18 bicycle transmission is constructed as a spur gear with a two parallel partial shaft transmissions
Article Summary
Rear derailleurs are problematic, particularly on mountain bikes. They get bent, they get gunked up, and they’re exposed to the elements. While sealed hub transmissions lack these problems, not all of them have axles that are strong enough for multi-terrain use, they add revolving weight, and that weight is added in the back of the bike – not low and in the middle, where you want it. German company Pinion has developed what it claims is something better ... a sealed gearbox located adjacent to the bottom bracket.
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