管胎碟煞 - 303 Firecrest Tubular Disc-brake
WH-303-FTUD-A1

Zipp 新款 NSW 與 Firecrest 火鳥版系列輪組迅如疾風，加上新潮的外觀設計、相容無內胎系統並升級全新花鼓組。

Zipp 303 Firecrest 管胎碟煞輪組，為追求性能的自行車手提供顛覆傳統規則的創新技術。此款輪組的開發是為了滿足職業越野公路車選手和偏愛撫平一切奇形怪狀的路面車友的首選輪組。

303 Firecrest Tubular Disc-brak 的關鍵技術，最初是為頂級款 NSW 系列輪組而開發的複雜鋸齒形渦洞排列設計，這項技術沿用至新款的 Firecrest，"ABLC™ 空氣力學邊界層控制鋸齒技術"一路延伸到輪圈邊緣，輪組結構性能提升，提高抗衝擊性！這些創新的技術使得輪組剛性更強，歷經巴黎-魯貝大賽、環法蘭德斯賽及職業越野公路車賽多項勝利洗禮，表現出眾出色，303 Firecrest Tubula 的核心組件，正是多用途且耐操的新款花鼓組，德國開發設計的 ZR1 DB 碟煞花鼓。

• 新式 Zipp 圖紋，彰顯迅如疾風的 自我主張
• 歷經春季古典賽與世界盃越野公路 車賽實戰驗證，天涯海角、風雨同 行的 45mm 框高管胎輪組
• 新款 ZR1 DB 碟煞花鼓，德國開發 設計，更佳的密封設計提升耐用度 ，和 66 個驅動咬合點，即時的動 力回應
• 以 Sapim CX Sprint 彎頭輻條編組
• 中心鎖入式碟盤介面，附鎖定環 (碟煞版)
• 附 12mm 前後花鼓端蓋 (碟煞版)
• 附快拆花鼓端蓋，快拆柄 (框煞版)
• XDR™ 或 SRAM/Shimano 棘輪座
• Campagnolo 棘輪座另售
• 終身保固

技術：ABLC SawTooth Technology、AeroBalance

ABLC SawTooth Technology (Aerodynamic Boundary Layer Control) 空氣力學邊界層控制鋸齒技術 
我們全新的 Sawtooth 鋸齒形渦洞排列設計，整齊排列成 12 個節點，當車速到達 20mph (32.2kph) 時，氣流脫離的頻率正好為 50hz。Sawtooth 鋸齒形渦洞排列法，輪圈形成的渦流層發展到小尺寸即會脫離，且形成較高的自然頻率，這會減少在輪圈剖面氣流遮蔽側的層流氣泡效應，可進一步減少高偏航角時的阻力和增進側風的穩定性。側風穩定性可以增加強陣風天候時的安全感，同時節省維持動線時，所需消耗的功率

AeroBalance 氣動力平衡
Zipp's sole mission is to help you go faster. That's why our wheels are race-ready before they're camera-ready. For years, Zipp has used a combination of testing methods 一 wind tunnel, CFD computer simulations, pro athlete evaluations, on-road testing, and the RollingRoad ride simulator - to refine aero performance to new levels of excel I e nee. Over the decades of innovation, our engineers have earned to look beyond just focusing on simply reducing aero drag. Instead, the goal now is to reduce aero drag while also minimizing the effects of crosswinds on handling. This optimizing of aero efficiency and crosswind stability became known internally at Zipp as AeroBalance. The approach began with Firecrest technology and has been advanced with the introduction of the NSW lineup, especially with the Sawtooth technology found in the 454 and 858 NSW. Sawtooth accomplishes this with a series of patented fin-shaped Hyperfoil nodes along the inner diameter of the rim that work together with our new HexFin ABLC dimples for improved airflow.

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