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Tagged: drivetrain, sram, xtr
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January 25, 2012 at 12:10 #105438
http://www.pinkbike.com/news/Prototype- … -Look.html
Clutch equipped? SRAM hasn’t let any information slip at this point, but taking a closer look at the prototype unit reveals that it seems to use a standard parallelogram, the very same as SRAM employs on their XO level unit. What is clearly different, though, is the derailleur’s larger than usual knuckle. What does it do? Why is it so big? There is only one reason in our minds: the prototype is an answer to Shimano’s friction clutch equipped XTR Plus derailleur that uses a roller clutch to keep its cage from swinging wildly back and forth over rough terrain, helping to greatly limit chain slap. Less noise is only part of the story; there also being an actual performance gain to be had thanks to the cage’s greater tension helping to keep the chain from bouncing off of the ring over rough terrain. The system has received positive reviews, and it looks as if SRAM is also ready to debut a design of their own, although we’re willing to bet that the drivetrain engineers at SRAM have been tinkering with the idea for quite awhile. Roller clutches are far from new technology, after all.Thoughts? Has anyone ridden Shimano’s version of a clutched rear derailleur?
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January 25, 2012 at 16:23 #105439
We don’t need no stinking clutchs! 😄 Later,
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