Shimano recently released carbon versions of some of their Dura Ace wheels. Unveiling the new full carbon C35 tubular and carbon alloy clincher wheels.
These wheels originally were seen as prototypes under Pro Tour riders, the new C35′s finally have passed Shimano's quality control testing and now are available to the weekend warrior. Shimano says they have a lot of the aero advantages of the deeper section C50 (50mm deep) rims, but weigh 75g less per rim, and 155g total weight savings per wheelset. Since the weight savings are at the rim (rotational weight), the pros have said they feel much faster and snappier.
Crafted with high modulus carbon through a proprietary manufacturing process. These wheels are then hand assembled in Shimano's own wheel factory. In fact, each wheel has its own control number that can be traced back to the specific builder, so like most higher end wheels these days, they're not just mass-produced. The tubular wheelset comes in much lighter, mainly in part to its full carbon rim construction. The clincher, uses an alloy clincher/brake track section bonded to the carbon dish, providing very similar aero advantages but weighing in at 140g heavier for the set.
Shimano is staying with their tried and true angular contact bearing system, though they've upgraded the preload adjustment, "digital bearing preload adjustment." Allowing you to dial in the bearing preload much the same way you always have by tightening or loosening end caps. The problem with older system was that once you got the bearing preload just where you wanted it. You would go and clamp the skewer down and add a compressive force to it, which added more drag to the bearings. It became a real balancing act of one versus the other to keep your wheels tight in the frame and spinning freely.
Shimano's new system applies the skewer clamp force directly to the axle, which has no effect whatsoever on the bearings, which keeps the wheels spinning smooth and free regardless of how hard you apply the clamp. With the trend of larger axles on mountain bikes, Shimano decided it couldn't hurt to increase front end tracking stiffness on the road, as well. The axle on the new Shimano Dura Ace Carbon Wheels increases to 12mm in diameter from 11mm on older models. The rear axle stays the same.
These wheels originally were seen as prototypes under Pro Tour riders, the new C35′s finally have passed Shimano's quality control testing and now are available to the weekend warrior. Shimano says they have a lot of the aero advantages of the deeper section C50 (50mm deep) rims, but weigh 75g less per rim, and 155g total weight savings per wheelset. Since the weight savings are at the rim (rotational weight), the pros have said they feel much faster and snappier.
Crafted with high modulus carbon through a proprietary manufacturing process. These wheels are then hand assembled in Shimano's own wheel factory. In fact, each wheel has its own control number that can be traced back to the specific builder, so like most higher end wheels these days, they're not just mass-produced. The tubular wheelset comes in much lighter, mainly in part to its full carbon rim construction. The clincher, uses an alloy clincher/brake track section bonded to the carbon dish, providing very similar aero advantages but weighing in at 140g heavier for the set.
Shimano is staying with their tried and true angular contact bearing system, though they've upgraded the preload adjustment, "digital bearing preload adjustment." Allowing you to dial in the bearing preload much the same way you always have by tightening or loosening end caps. The problem with older system was that once you got the bearing preload just where you wanted it. You would go and clamp the skewer down and add a compressive force to it, which added more drag to the bearings. It became a real balancing act of one versus the other to keep your wheels tight in the frame and spinning freely.
Shimano's new system applies the skewer clamp force directly to the axle, which has no effect whatsoever on the bearings, which keeps the wheels spinning smooth and free regardless of how hard you apply the clamp. With the trend of larger axles on mountain bikes, Shimano decided it couldn't hurt to increase front end tracking stiffness on the road, as well. The axle on the new Shimano Dura Ace Carbon Wheels increases to 12mm in diameter from 11mm on older models. The rear axle stays the same.
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