槳長計算器 Paddle Length Calculator
算出專屬槳長 Professional Biomechanical Fitting
透過肘距、肌力與體重，精確計算出最符合您身體結構的槳長與握距。本工具基於 Michele Ramazza 的專業算法。
Precisely calculate the ideal paddle length and grip width based on your biomechanics. Algorithm developed by Michele Ramazza.
專業長度計算器 Pro Length Calculator
請輸入精確數據以獲得最佳擬合結果。此計算器適用於溪流、旅遊、海洋與激流標桿。
Enter accurate data for optimal results. Valid for creek, touring, sea and slalom.
雙臂平伸，測量兩肘尖之間的最長距離。 Measure the span from elbow tip to elbow tip with upper arms raised horizontally.
推薦擬合數據 Recommended Fitting
建議槳總長 Recommended Total Length
建議內部握距 Recommended Inner Grip Width
建議槳葉面積 Blade Surface Area
Medium-Large
槳長的科學與邏輯 The Science of Paddle Length
為什麼生物力學指標比身高更重要？
Why biomechanical metrics trump height-based formulas.
1. 破解「身高決定論」的迷思 1. Debunking the "Height-Only" Myth
傳統上，許多人習慣依照身高來選擇槳長，但這在生物力學上是存在缺陷的。獨木舟是一項「坐姿」運動，決定你划幅與力矩的關鍵在於你的軀幹高度 (Torso Height)、臂長 (Arm Span) 以及肩膀寬度。兩位身高相同的人，可能因為軀幹、臂展比例不同，而需要完全不同的槳長。 Traditionally, many paddlers choose paddle length based strictly on standing height, but this is biomechanically flawed. Kayaking is a seated sport; the factors dictating your reach, stroke arc, and leverage are your torso height, arm span, and shoulder width. Two paddlers of identical height may require entirely different paddle lengths due to differing torso-to-limb proportions.
2. 核心邏輯：動力三角形 2. Core Logic: The Power Triangle
本工具的核心，是幫你找出身體發力最穩定、最安全的區間。有好的握距才能找到對的長度。 The core purpose of this tool is to identify the most biomechanically stable and injury-free power zone for your body. An accurate grip width is the foundational prerequisite to determining correct paddle length.
- • 肘距 vs. 握距：Elbow Span vs. Grip Width: 我們不參考肩膀寬度，而是測量具備功能性的「肘對肘距離」。 Rather than relying on static shoulder width, we measure the functional "elbow-to-elbow distance" with arms raised.
- • 0.658 黃金比例：The 0.658 Golden Ratio: 計算器輸出的握距，旨在讓你握槳時，肩膀自然處於最穩定的「肩胛面 (Scapular Plane)」。 The calculated grip width naturally positions your humerus within the scapular plane, optimizing joint stability under load.
3. 驗證你的理想握距 3. Grip Verification & Angle Analysis
本圖呈現上臂相對於軀幹的夾角。藍色 45° 為力量與安全的最佳平衡點。 This diagram illustrates the upper arm angle relative to the torso. The 45° position provides the optimal balance of power and safety.
想像從頭頂向下看你的雙臂位置。 Visualize looking down at your arms from directly above your head.
將手肘從身體正前方向兩側張開至 45 度。 Open your elbows outwards from straight forward to an angle of 45 degrees.
當肘關節呈現 90 度時，肱二頭肌與肱橈肌處於最佳的「長度-張力關係」，能最有效地將背闊肌、胸大肌產生的力量，透過前臂這根槓桿，毫無損失地傳遞到槳桿上。 With the elbow joint at 90 degrees, the biceps and brachioradialis operate at their optimal length-tension relationship, seamlessly transmitting core torque from the latissimus dorsi and pectorals directly to the shaft through the forearm lever without mechanical power loss.
此時雙手間距離，即為你發力最穩定、最保護肩膀的參考握距。 The distance between your hands in this posture is your optimal, joint-protective reference grip width.
最佳角度： 這是肩膀最穩定、肌群發力最平衡的角度（肩胛面）。在受力時，肩膀的負擔最輕。 Optimal Angle: Positions the shoulder in the scapular plane, balancing muscle recruitment and minimizing joint stress under heavy loads.
雖然安全但力矩太短，無法透過核心旋轉發力，容易變成低效的「推槳」。 Safe but provides insufficient mechanical leverage, preventing effective torso rotation and degenerating into weak arm-pushing.
傳統 90 度規則。會讓肩關節處於外展與外旋極限，受力時極易導致擠壓或脫臼。 The outdated 90° rule. Places the shoulder at extreme abduction and external rotation, drastically increasing impingement and anterior dislocation risks under load.
4. 長度與力量的平衡 4. Power & Cadence Balance
最後，計算器會根據你的肌力 (引體向上次數) 與體重微調總長度： Finally, the algorithm fine-tunes total length based on your muscle power (pull-up capacity) and body weight:
- • 強壯的划者：Power Paddlers: 可以支撐更長的力臂（較長的槳），以換取更高的單槳推力。 Higher strength can leverage a slightly longer paddle shaft to deliver maximum single-stroke propulsive force.
- • 重視頻率的划者：High-Cadence Paddlers: 較短的槳能提升划頻 (Cadence)，並減輕關節在長途巡航時的負擔。 A shorter shaft increases stroke cadence and reduces cumulative joint strain during long-distance runs.
補充：關於坐高與軀幹 Note: Seat Height & Torso Geometry
取得握距後，下一步即是計算「抓握點到槳葉」的距離。這段距離理論上取決於軀幹長度與船型坐高。 Once grip width is established, the remaining parameter is the distance from grip to blade, theoretically determined by torso length and seat height relative to the waterline.
由於坐高在大多數船型中是可以輕易調整的（如墊高塊），每艘船吃水深度不同，因此不將其列入計算器的固定參考。建議以計算器得出的長度為基準，再依個人習慣坐高、船型微調。 Because seat height is easily adjustable in modern kayaks (via outfitting shims) and hull waterline depths vary, it is omitted as a fixed variable. Use the calculated length as your baseline and adjust slightly based on your custom cockpit seating setup.
握距標定指南 Hand Distance & Grip Marking Guide
如何將計算出的理想握距應用到你的槳桿上？
How to accurately mark and transfer the calculated grip width onto your paddle shaft.
透過計算器得出理想握距後，你可以使用絕緣膠帶在槳桿上纏繞數圈作為參考點。 After calculating your ideal grip width, apply several wraps of electrical tape to the paddle shaft as visual and tactile alignment markers.
- 1 找出槳桿的精確中心點。 Find the exact center point of the paddle shaft.
- 2 以此中心點為準，對稱地向左右標示出計算出的距離值。 Measure symmetrically outward from the center point using half of your calculated grip width on each side.
- 3 確保標記對稱，這能強迫你維持正確的生物力學姿勢。 Ensure symmetrical placement to reinforce consistent biomechanical positioning on every stroke.
請務必相對於中心對稱標記 Always mark symmetrically relative to center
Ramazza 的選購建議 Expert Technical Insights (Ramazza)
性能優先的材質、槳桿與設計
Material, shaft configuration, and blade geometry considerations for high-performance paddling.
專業划者個人心得 Professional Paddler's Insights · Michele Ramazza
此區塊內容基於 Michele Ramazza 在激流與競技領域（Slalom / Creeking）多年的實戰經驗與個人心得。這些觀點反映了資深選手對極致回饋與性能的個人偏好，並不一定適用於所有使用者，建議結合個人程度與舒適度進行參考。 This section reflects personal insights and field experience from Michele Ramazza in whitewater slalom and steep creeking. These perspectives prioritize maximal feedback and elite performance, and should be evaluated alongside your personal skill level and comfort.
材質：剛性與重量 Material: Stiffness vs. Weight
碳纖維 (Carbon Fiber) 是性能首選。它能最小化槳桿形變，確保每一份核心力量都完整傳遞。雖價格較高且對關節衝擊較直接，但其輕量化優勢能顯著減少長途划行的疲勞。 Carbon fiber is the premier choice for performance. It minimizes shaft flex, ensuring maximum power transfer from your core directly into forward propulsion. While more rigid on joints and costlier, its minimal swing weight significantly reduces fatigue during long sessions.
槳桿：直桿的回饋感 Shaft: Direct Feedback of Straight Shafts
直桿始終是 Michele 的第一選擇。它提供最直接、不模糊的水感回饋，並能協助划者建立最精確的控槳標定感。彎桿雖能減輕手腕壓力，但會犧牲部分對槳葉角度的微細感應。 Straight shafts remain Michele's top recommendation for active whitewater. They provide unfiltered tactile water feedback and promote precise blade orientation awareness. While bent (crank) shafts relieve wrist angle strain, they compromise subtle blade indexing sensitivity.
穩定度：槳葉前移設計 Stability: Forward Offset Blades
強烈推薦槳葉相對於軸線向前偏移 (Forward Offset) 的設計。這種構造能顯著提升槳葉入水瞬間的穩定性，大幅減少震動，這對激流中精確的標定操作至關重要。 A forward-offset blade geometry (where the blade plane sits forward of the shaft centerline) is highly recommended. It enhances immediate catch stability upon water entry and drastically eliminates blade flutter, essential for razor-sharp whitewater boat control.
槳葉偏角 (Feather 角度) Feather Angle Biomechanics
偏角的選擇是為了在風阻與手腕轉動間取得平衡。能否順暢划槳並非取決於角度對錯，而是非控制手 (Non-control hand) 對槳桿的精細控制能力。雖然 45° 是常見選擇，但正確的手法應讓槳桿在手中自如轉動，而非僵硬抓握。 Feather angle balances wind resistance with wrist rotation mechanics. Smooth stroke execution is governed not by an arbitrary angle number, but by the dexterity of the non-control hand allowing the shaft to rotate freely without excessive grip tension. While 30°–45° is standard in modern whitewater, proper technique emphasizes a loose, relaxed shaft rotation.
本槳長生物力學擬合演算法與推薦標準，其科學依據編譯自國際激流專業生物力學教練 Michele Ramazza 發表之學術期刊與激流力學模型。旨在幫助激流獨木舟划槳者避免肩部肩袖肌群的運動傷害並最大化推進效力。 The biomechanical paddle fitting algorithm and guidelines on this page are translated and adapted from the research and fluid dynamic models developed by international whitewater biomechanics coach Michele Ramazza. This tool is designed to help paddlers prevent rotator cuff injuries while maximizing stroke power efficiency.