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Roval CLX 32 – Rear

Roval CLX 32 – Rear

Part No. 30017-7702

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When we set out to create a lightweight wheelset, we didn’t want it to be “just another climbing wheel. We wanted to provide the lightest wheelset out there with the aerodynamic attributes of something twice its depth. One wheel that'll get you to the base of a climb quickly and up it as efficiently as possible, yet still be strong enough for day-to-day abuse. It was a tall order, but in the end, the CLX 32 gave us more than what we asked for.

Our design process started with a low overall weight at the forefront, as we knew what weight we could hit with the information and technology we had available. With that weight in mind, we then turned our focus to aerodynamics and began an iterative process of designing and testing over 150 individual rims to find the optimal shape. These innumerable Computational Fluid Dynamics (CFD) models, Win Tunnel hours, and shots of espresso left us with a 32mm-deep shape that boasts more logged wind tunnel time than any other wheel in its category.

Once we found the most aerodynamic shape, at the 32-millimter depth, we came back to the weight focus and proceeded to experiment with over 40 different layup methods to reach our desired weight. And this made the CLX 32 lighter and faster than every other competitor in the lightweight wheel category.

For the CLX 32 rear clincher, we mated the rim to our Aero Flange (AF) series hub with DT Swiss Aero spokes to create the best overall system. This results in a 730-gram, 21mm-wide (internal width) rear wheel with an extremely low inertia value. In cycling, inertia relates to the amount of force it takes to accelerate or decelerate, so wheels that are built with lightweight rims, like the CLX 32, result in a lower inertia value that creates a lively wheel that allows you to accelerate, decelerate, and change direction with less effort. But why so wide? Well, additional width does three primary things for a rim—it provides additional structural strength, it allows for a clean rim and tire interface when using wide tires (resulting in enhanced aerodynamics and faster rolling properties), and it better supports the tire in hard cornering. This boosts both predictable grip and confidence when things get twisty on the descents.

Each CLX 32 clincher rear wheel also employs the legendary CeramicSpeed bearings and comes with our padded wheelbag, quick-release, tubeless plugs, tubeless valve, and SwissStop Black Prince brake pads.

Specialized設計輕量輪組時,希望它不要「只是另一款爬坡輪」,而是要成為世上最輕巧的輪組。要讓其框高只有傳統同性能輪組的一半,卻具備全部的空氣力學性能,並能帶您快速、高效率爬坡,還能承受每天的操練。雖看似遙不可及,但CLX 32輪卻能輕鬆達標,還能超乎預期。

Specialized以追求整體輕量為設計的出發點,並根據現有資訊及技術訂出目標重量。接著我們把焦點轉向空氣力學,並開始進行迭代設計,並測試150個以上的輪框,以找出最優異的形狀。歷經無數次電腦流體力學(CFD)模型測試、Win Tunnel風洞實驗以及無數杯義式濃縮咖啡後,我們終於發現框高32mm版本,其速度比其他規格都還要快。

找到最符合空氣力學的形狀,並搭配32mm框高後,我們再回過頭來處理重量的問題。Specialized實驗了超過40種不同的纖維編織技法以追求渴望的重量,終於打造出比其他輕量級車輪更輕、更快速的CLX 32輪框。

CLX 32後輪使用專門Aero Flange(AF)系列花鼓,搭配DT Swiss Aero輻條,創造出最佳的整體系統,造就730g、21mm寬(內徑寬)、超低慣性的前輪。慣性會影響騎乘加、減速所需的力量,因此像是CLX 32等輕量化輪框的慣性較低,就可增加車輪的靈活度,讓您加、減速和轉向都更加輕鬆。但為何需要這麼寬?加寬後的輪框有三大功效,能提升結構強度、使用寬胎時還能保持輪框和輪胎的介面乾淨利落,可強化空氣力學效應,並增加滾動性;並增加輪胎高速過彎的支撐力,在下坡多彎路時抓地力仍強,讓您騎乘更有自信。

每一個CLX32開放式後輪皆配備傳說中的CeramicSpeed培林,另附襯墊輪袋、快拆、無內胎專用塞、專用氣嘴以及SwissStop Black Prince煞車塊。

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