Bikes Blog
Race Face Period Chainring Blends Carbon, Alloy & Metal to Final Eternally
Apr
OK, possibly not really perpetually, however the brand new Race Face Period chainring has 5x the claimed lifetime of typical alloy chainrings, and it’s simply as gentle.
The design blends stainless-steel chainring tooth with a carbon fiber spider and alloy spindle interface. Right here’s the way it comes collectively…
Race Face has been making machined alloy chainrings for about so long as they’ve been making direct-mount cranksets. However they know that metal chainrings last more, they’re simply heavy. Alloy chainrings are quite a bit lighter, however don’t final as lengthy.
So, how do have each sturdiness and light-weight weight? Add carbon fiber, after all.
The brand new Period chainring is mainly three elements – tooth, spider, and mounting interface.
The chainring tooth are stainless-steel, that are extremely arduous. Race Face says their hardness measures 1300 MPa (Mega Pascals), versus 475 MPa for alloy. Meaning they’re extra sturdy, much less vulnerable to put on, and can final about 5 occasions longer. (Titanium is 900 MPa, FYI)
The metal tooth ring has further shaping on the inside aspect, giving it loads of spiky floor space captured within the cargon. This proprietary development technique and “adhesion enhancing” components forestall it from separating.
Actually, they declare it might deal with about the identical torque as a Cummins diesel engine, which is far more than you or I’ll ever produce. And the unit has the identical affect energy as aluminum chainrings.
Nonetheless not satisfied? Of their fatigue checks, normal 12-speed chainrings from the 2 greatest drivetrain manufacturers failed in 400,000 cycles or much less. The Period chainring testing was stopped at 2.1 million cycles as a result of it wasn’t exhibiting any indicators of failure. In all, it’s sufficient for them to present the Period chainring a lifetime assure in opposition to injury.
The alloy middle piece is a direct mount interface for Race Face CINCH cranksets. For now, they’ll solely supply this model – there are not any fast plans to supply chainrings to suit SRAM or Shimano cranksets.
However, they’re suitable with SRAM and Shimano chains. Like different manufacturers, they provide two distinct tooth profiles, one for Shimano 12sp mountain bike chains, and one for “different” 11/12sp chains (together with SRAM FlatTop).
It’s out there with 52mm and 55mm chain line offsets. And it’s suitable with most if not all chain guides.
MSRP is $150, about twice the price of alloy, however with a for much longer lifespan. Claimed weight is 83g (32T), and it’s out there in 30/32/34 tooth counts.
Desire a full matching bike? Try the brand new Race Face Period handlebar and mountain bike wheels, too.