Fulcrum Racing Zero Carbon C17 Wheelset

A strong alliance: the Racing Zero Carbon C17 wheelset by Fulcrum
The Racing Zero Carbon C17 is the new generation of the well-known Racing Zero Carbon which combines a carbon rim and aluminium spokes. This hybrid technology combines the legendary stiffness of the Zero aluminium wheel with an even better responsiveness that comes from the carbon rim, which reduces the wall weight and thus the moment of inertia. A lightweight bike, with optimum manoeuvrability and power transmission to the ground. The carbon braking surface with AC3 treatment guarantees power and optimal dosage when braking under all external conditions.
Specifications:Application:RoadWheel Size:28″Tyre Type:clincher tyreNumber of Spokes:16 (front), 21 (rear)Brake Type:rim brakeTubeless System:noneFreehub Compatibility:Shimano Freehub:8/9/10/11-speed Shimano/SRAM (Road)Campy Freehub:9-/10-/11-/12-speed CampagnoloNote:Installing 8-/9-/10-speed cassettes on Shimano freehub bodies requires a 1.85 mm spacer.Technical Information – Rim:Dimensions (ETRTO):17-622Inner Width:17 mmOuter Width:24.2 mmDepth:30 mmValve Hole Diameter:SV / Presta (6.5 mm)Rim Material:CarbonTechnical Information – Front Hub:Over Locknut Dimension:9 x 100 mm quick releaseBearings:USB™ ceramicBody Material:CarbonTechnical Information – Rear Hub:Over Locknut Dimension:10 x 130 mm quick releaseBearings:USB™ ceramicBody Material:CarbonTechnical Information – Lacing:Front Lacing Pattern:radialRear Lacing Pattern:2:1 Two-to-One™Spoke Type:straight pull, aeroSpoke Material:aluminiumNipple Material:aluminiumApproved For:Weight Limit:109 kg total weight*Recommended Tyre Width:25 – 50 mm
* When weighing more than 82 kg (180 lb) shorter inspection intervals are recommended.
Features:larger base width of the rim for more gripwide, rounded profile reduces coefficients of frictionoversized flange on rear hub to optimise torsional stiffnessdoubling of the spokes on the cassette side of the rear hub provides greater torsional stiffness and better power transmissionTechnology:Dynamic Balance™
The concept is simple and ingenious: balance the mass of the rim joint with an equivalent mass positioned exactly on the other side of the rim. On the top-of-the-range models, this is achieved by special machining in the area opposite the rim joint. The result is a wheel that is perfectly balanced during rotation.

MoMag™
A magnet and a lot of expertise. This is how the patent of the tested ” Mounting Magnet” system, i.e. MoMag™, came to be. How does it work? After the nipples have been inserted into the rim via the valve opening, they are ” guided” to the connection point with the rim using a magnet. With this simple and ingenious system, you get a wheel with no holes on the upper rim, but with conventional nipples for lacing! Advantages: no drilling in the rim bed, which means a consistently even rim without critical points or fractures, and no rim tape is necessary for wired tyres, which has a positive effect on the weight. The advantages are immediately obvious: longer rim durability, higher resistance to fatigue, possibility of tighter tensioning of the spokes and greater stiffness; in terms of performance, this means higher reactivity and acceleration. What’s more: Replacing and maintaining spokes becomes extremely simple and fast. All to the benefit of the cyclist who has chosen Fulcrum.

USB™
Fulcrum has always been respected for the extreme smoothness and reliability of its hubs. These characteristics are due to the fact that all projects are developed in the R&D department and an almost manic attention is paid to every detail. The hubs with USB (Ultra Smooth Bearings) ceramic bearings further increase wheel smoothness and reduce weight and maintenance. Comparative tests have shown that USB bearings are 50% smoother running than standard bearings. Improving your performance, whether in a competition or a ride with your friends, is now easier.

Plasma Electrolytic Oxidation
The freehub body in the Shimano/SRAM versions is subjected to Plasma Electrolytic Oxidation treatment in the laboratory. Although the material thicknesses have been reduced to a minimum to benefit the weight, durability and strength are guaranteed.

2:1 Two-to-One™
At the moment when the rider pedals at full power, the rotation of the cassette causes the spokes on the freehub side to give way, resulting in a loss of rim tension. This causes excessive bending of the whole and this inevitably means a loss of energy. Fulcrum has solved this classic problem in cycling with its 2:1 Two-to-One Spoke Ratio patent, that is, with twice the number of spokes in critical areas. In this way, two spokes take over the task of one, the yielding and twisting of the wheel remains low and the transmission of the athlete’s energy becomes much more efficient. Thanks to this patent, the spoke tensions are more balanced and the fatigue strength of rim, hub and spokes is much higher.

AC3™ All