真的是超詳細的說明，感謝幫忙解說~~~
我還要努力消化吸收一下~~
Mobtom wrote:
承上文，
依照感應器測量出力的測量部位，市售主流功率計可以概分為四種：...(恕刪)
(題外話：對於無端消失近一周要解釋一下，上周四電腦突然故障，送修至今日才拿回來，當時mobile01的帳號並未登出，所以囉，這幾天也無法使用這個帳號發文，請見諒...)
二、曲柄臂式(crankarm-based)：
將應變片安裝在曲柄臂內外的類型，
以分別在左右曲柄臂安裝應變片，可以個別計算左右腳出力的雙側型款式為上選。
也有單側型、價錢較低的款式可以選擇。
1.PIONEER PEDALING MONITOR
(昇陽代理)
http://www.sycycles.com/sycycles/index.php?op=ppage&c2=41&id=1234
(雙側型：SGY-PM910H2，包含SGX-CA500 專用碼錶，套裝價43000元，當然，不含曲柄組；另外，SGX-CA500 專用碼錶則定價8500元)
(原廠官網)
http://pioneer-cyclesports.com/ch/
(雙側型：SGY-PM910H2)
http://pioneer-cyclesports.com/ch/products/sensor/sgy-pm910h2.html
※「SGY-PM 910H2」是首部踏板每旋轉 30˚ 即測量並顯示結果的系統。
透過偵測踩踏期間曲柄每 30˚ 形變的微小變化，測量每旋轉一周的 12 處「施力強度」及「施力方向」。
連結 SGX-CA500 車表以提供即時的踩踏圖形顯示。
上傳此資料後即可分析您踩踏的獨有特性，並將您的成績量化為「踩踏效率」數值。
※左右感測器可單獨與功率計搭配使用，
可將雙腳感知裝置換裝於訓練車上，來進行雙腳踩踏技巧之提升。
另外可換裝單腳於比賽用車上，於比賽時使用。
SGY-PM910H2的出廠原始設定是雙腳功率測定模式。可依照使用目的進行模式切換。
※維護簡易，
歸零校正請將左右曲柄依序停止在垂直地面的位置，利用先鋒車錶選擇「校正開始」，SGX-CA500可同時對左右感測器進行歸零校正。
電池交換(CR2032)可自行開啟外蓋更換電池。
【注意】目前僅支援 Shimano FC-9000 及 FC-6800 曲柄組
(另有入門級、單側型的型號)，分別是：
(SGY-PM910HL-左曲柄專用)
(SGY-PM910HR-右曲柄專用)
※單腳功率監控型式是利用一般市售ANT+車錶之搭配，來達到高精度的功率計測。
爾後只要添購先鋒專業車錶SGX-CA500即可獲得包含踩踏施力向量、踩踏扭力、效率計測等詳細資訊，藉此將可更進一步了解自己的技巧。
(SGX-CA500 專用碼錶)
http://pioneer-cyclesports.com/ch/products/cyclocomputer/sgx-ca500.html
※深入了解您的騎乘方式並追求理想的騎乘形式，新世代高效能車表。
輕薄洗鍊的外型。 即時顯示超過 100 種資料，並支援 ANT+™ 與 Wi-Fi。
(PIONEER 強大的資料分析網路平台 Cycle-Sphere)
http://pioneer-cyclesports.com/ch/products/data-analysis-web-service/cyclo-sphere.html
※車表可將擷取的騎乘資料上傳至雲端，並在瀏覽器上使用地圖及圖形顯示。
您可分析用於訓練與比賽的騎乘資料，協助支援您展現運動員的完整潛力。
※騎姿顯示功能：
資料解析中，將首次導入自動偵測騎姿變化，
在騎乘資料中將可區別坐姿或站姿騎乘。
在踩踏監控畫面及踩踏狀態圖中，將會顯示坐姿或站姿圖標，
各項資料也將可針對個別騎姿狀態進行平均或統計計算。
※訓練量、效率、功率區間效率、騎乘時間及去年、上個月、上週或使用者指定期間的功率資料皆可顯示在統計圖上。
在指定時間範圍內進行比較，深入探究技巧改善與訓練成果間的關係，並在下一階段的訓練中找出新的目標與問題。
※踏板監控-詳細的踩踏分析：
顯示水平施力向量、踩踏回轉數、功率、踩踏效率。
計算並伴隨其他圖表顯示，同時根據參考資訊個別分析踩踏狀態。
扭力顯示、分段平均顯示等 可自訂畫面，顯示感興趣的資料。
※支援 FIT 檔案格式：
亦可分析 FIT 格式的檔案。 上傳至 Cyclo-Sphere 的紀錄檔可使用 FIT 檔案格式儲存。
執行網路連結設定，即能將 FIT 檔案自動轉送至 STRAVA。
※摘要顯示各種資料分析清單：
顯示包括平均踩踏率、最高功率與距離、平均踩踏迴轉數、速度、心率*、溫度、氣壓、坡度及耗能、踏板流暢度和扭力效率等資料。
選擇區段以進行即時計算，並在時間序列圖上顯示各種類型的平均值或最大值。
※線條圖：
依時間先後檢閱各種騎乘資料模式，
水平軸可代表時間或距離，垂直軸可顯示功率、左右功率平衡、踩踏效率、踏板流暢度、扭力效率、踩踏回轉數、心跳數等。
最多可同時顯示四種資料數值，並依時間先後或騎乘距離檢閱您的成績。
使用滑鼠選擇需分析的範圍，並在該區段中顯示獨立資料。 圖表可流暢顯示該特定時段的表現。
※結合地圖的活動資料分析：
在訓練中，騎乘的路線可顯示在地圖上。
將游標置於地圖上便可即時確認任一點的踩踏狀況。
※散布圖：
可使用兩組相關的資料數值查看個人騎乘動態
包括踩踏效率和功率間的關係、踏頻與功率間的關係，以及心率與功率間的關係。
※長條圖：
顯示個人在特定功率等級的騎乘距離/時間統計資料
可透過查閱長條圖，輕鬆設定目標值。
除功率外，踩踏效率統計資料、心跳數、踩踏回轉數及速度都會顯示。
※分享分析資料：
分析資料可在 Facebook 與 Twitter 上分享。
透過分享分析資料，騎乘者可以在遠端位置執行資料分析。
【Pioneer Power Meter Featured in Peloton Magazine's Leading Edge Video Series】
https://www.youtube.com/watch?v=kb_-GXfnagg
【先鋒功率計踩踏原理】
http://tw.weibo.com/5865707423/3960831948894612
【Pioneer Power Meter SGY-PM910H2 testing】
https://www.youtube.com/watch?v=6Jm2xBAYxIo
【100km on PioneerPowerMeter CycloSphere】
https://www.youtube.com/watch?v=-GzGg-9WoHE
【3 things in analyzing your cycling powerdata】
https://www.youtube.com/watch?v=7RrOrpu8wg0
【單車時代2015.02.28的報導-Pioneer踩踏效率訓練營須田晋太郎教練深入解說Pioneer踩踏效率分析系統】
http://cyclingtime.com/tw/documents/4922.html
迎著風 流著汗 心靈與身體的對話
這每ㄧ刻的感動 都是上天的恩賜
二、曲柄臂式：
2.ROTOR POWER
(建來運動行銷代理)
http://www.klight.com.tw/
(雙側型ROTOR POWER 建議售價76000元；單側型ROTOR POWER LT 建議售價45000元)
(原廠官網)
http://power.rotorbike.com/
※Understand & Optimize：
Independent leg power (left and right balance)
Torque Efficiency
Pedal Smoothness
※Thermal error immune design
Statically indeterminate measurement location makes the POWER 100% Thermal error immune.
Why? No expansion / contraction variant of Spider & spline, during temperature changes = no error-inducing thermal tension.
Tested to standard waterproof procedures.
(雙側型ROTOR POWER)
※羽量級功率計，CT盤配置腿長170mm僅重505克（不含齒片）。／採用左右獨立應變規配置，能提供左右腳的精準量測，讓你百尺竿頭更進一步。／獨家的踩踏動作分析及左右輸出比例，更有效找出訓練的重點。／ANT+傳輸協定，支援多種碼表。／可自行更換電池。／採用MAS五爪式齒爪，能支援市面上所有圓盤及ROTOR Q-Rings和QXL橢圓齒片。／UBB30系統能對應各種車架系統。
※ROTOR POWER is in fact two, super-accurate, independent power meters: one left, one right.
This gives you quality data no other system can provide:
Individual left & right “power balance” measurement.
Independent positive and negative power output.
Unsurpassed accuracy due to symmetrical crank deformation with 8 strain gauges (no need for extensive calculus or data filtering).
ANT+ compatibility.
Easy battery replacement.
Standard Micro Adjust Spider (MAS) for fine-tuning your Q-Ring position.
30 mm UBB axle design will allow it to be installed on almost any bike – regardless of its 24 or 30 mm BB system.
(單側型ROTOR POWER LT)
※市面上最輕量的功率計，CT盤配置腿長170mm僅重670克。／採用左腿單應變規配置，讓價格更親民，並保留多數功能性。／ANT+傳輸協定，支援多種碼表。／可自行更換電池。／採用標準五爪式齒爪設計，能支援市面上所有圓盤和ROTOR Q rings和QXL橢圓齒片。／UBB30系統能對應各種車架系統。
※ROTOR POWER LT
Weight: 535g(without chainrings)
Availability: BCD 110, 165/170/172.5/175mm; BCD 130 165/170/172.5/175mm.
ROTOR POWER LT is an integrated power meter installed on the left crank arm.
Placement of 4 strain-gauges in the left crank arm to give accurate, clean, noise-free data.
No spiking from shifting, rough roads, or from sprinting.
500hz sampling rate.
Battery life estimated at 300 hours per use.
迎著風 流著汗 心靈與身體的對話
這每ㄧ刻的感動 都是上天的恩賜
二、曲柄臂式：
3.STAGES POWER
(捷安特代理)
洽詢：04-40559555
※將僅20g的小巧輕薄型感應器搭載在左曲柄的內側，
左腳的出力會由感應器透過感測左曲柄臂的變形加以計算；
右腳則是根據左腳的出力透過獨家的演算法來計算。
另外，從智慧型手機的「STAGES POWER APP」應用程式能夠進行歸零、韌體更新。
(原廠官網)
http://stagescycling.com/global/
※The next generation Stages Power meter Shimano Dura-Ace 9000 model was ridden to victory in the 2015 Tour de France by Chris Froome and his Team Sky teammates.
We consider this model thoroughly tested. Since Shimano’s Dura-Ace and Ultegra cranks are a staple in our Stages Power meter line, we’re very proud that this model achieved a feat very few contemporary power meters ever have.
※Our meter is:
Downright miniature. Under 20g.
Without magnets.
Made from the same material as bullet proof glass.
Simply put, the Stages Power meter sports the most advanced technology employed in the power meter category, all while being one of the easiest to maintain and simplest to use.
※THE STAGESPOWER APP
All the data your Stages Meter transmits is transmitted to directly into The Stages Power app.
Use the app to update your firmware and access Stages Power innovations.
Identifies and allows for instant firmware updates the meter.
Zero reset the meter from within the app.
Take quick looks at power and cadence.
Power meter battery level indication.
High-speed data capture demonstrating the Stages Power meter’s sensitivity, and expert coaching applications.
◎【Stages Power Meter Review - First Look-2015.02.08】
https://www.youtube.com/watch?v=G_VuDK0gkU8
◎【Inside the new STAGES power meter and crank - Road Bike Action Magazine-2015.09.23】
https://www.youtube.com/watch?v=CdlOmZ8R4NQ
◎【Stages Power Meter Review Gen 2-2015.12.03】
https://www.youtube.com/watch?v=NTE8GOuumxM
◎【Stages Shimano 6800 Ultegra power meter Gen 2 review + unboxing-2016.06.15】
https://www.youtube.com/watch?v=vutkpy78ucc
迎著風 流著汗 心靈與身體的對話
這每ㄧ刻的感動 都是上天的恩賜
二、曲柄臂式：
4.InfoCrank
(原廠官網)
http://www.vervecycling.com/
※What we want is accurate, reliable and consistent data coming from our bicycle power meter day in, day out. This is the exact reason that Verve exists today.
※InfoCrank makes cyclists happy – here’s why：
a.You ride with two legs, so measure both!
With InfoCrank, you can now measure directly at the source where you apply torque to the cranks. Riders like Robbie McEwen could only have wished for dual sided cycling power meters for sale in their day, but we aren’t all Green Jersey winners, so why should we care about Left and Right?
We believe in measuring direct Left and Right because power is the key metric to improving your cycling. When cycling with a power meter that is accurate, you get more of the right data so that you can solve imbalances and make real gains.
Improve today with reliable and accurate Left / Right power meter
b.Weatherproof
You need a power meter for your bike that works every day, no matter where the adventure may take you. InfoCrank is IPX7 rated, meaning you could ride it submerged in a stream without any water ingress issues. You’ll get a perfect stream of data in all sorts of crazy conditions.
c.Temperature steady
Temperature affects strain gauges and messes with the readings. Other spider, hub or crank based power meters use algorithms to compensate for these errors. But InfoCrank was built specifically to eliminate problems without relying on complex calculations. Every data point from InfoCrank is completely accurate and true, making it the best power meter for a road bike.
d.Super durable
Cycling pushes us to our limits, and we need our tools to go the distance with us. InfoCrank has all its electronics protected inside a high grade alloy crankset, making training with a power meter a breeze. What’s different about InfoCrank? It just works. Only every time. Scroll down this page to read our cycling power meter reviews.
e.Certified accurate
InfoCrank is the most accurate cycling watt meter. But you’ve heard that from every other bicycle power meter on the market, right? +/- 1% or +/- 2% doesn’t sound like a lot, but it’s a bit deeper than that. Unlike any other power meter, we have proven our accuracy through external certification to validate our claims. And, because InfoCrank doesn’t drift, it’s always as accurate as promised.
f.On any bike
Power meter cycling training will be seamless with an InfoCrank. In fact, there is no difference between the watts measured on one set of InfoCranks and another*. If you switch the InfoCrank between bikes, or you have one on each bike, the watts measured on both are the same watts. Accurate for the whole ride, every day.
*Lab tests during production have shown that each bike crankset is within 0.5% on average.
g.No data drift
Accuracy claims don’t usually take into consideration drift over time when cycle training with a power meter. Drift is when the power meter data is inaccurate due to temperature changes affecting the strain gauges. It can happen in one day, or over the course of a week or month. Power meters usually resolve this issue by re-zeroing before a ride, but that just indicates that the accuracy of your last ride had drifted. It was no longer accurate as claimed. Our new cycling power meters resolve drift by design and require no re-zeroing to keep the data accurate.
※Available to Order or Purchase at Romney Cycles Kent Ltd
Cost £1149.00
Includes:
Crank arms
Praxis Chainrings
Praxis bottom bracket
Fitting kit, Ant Dongle and tools
※Key Features:
Left and Right power meter crankset
Compact 110mm BCD spider
Stiff M30 axle
ANT+
Weight 694 grams
IPX7 waterproof
Choose your specification of Chainrings currently 50-34 0r 36-52,
Crank Lengths 170mm, 172.5mm 0r 175mm.
Choice of Bottom Brackets BB30/PF30, BSA, BB86, OS
※How often should I re-zero InfoCrank?
Not once a day, not twice a day, and not while you’re on your ride.
You’ll have to kick the calibration habit and learn to trust the data.
※Will InfoCrank work with my Garmin?
For sure!
InfoCrank is ANT+ compatible, so you can use it with any head unit that is ANT+ and upload your data files to lots of data analysis software.
※Can I change the batteries myself?
Of course you can.
The InfoCrank power meter uses easy to find cell batteries, but keep in mind you won’t be changing them often. There’s 500 running hours for each InfoCrank!
◎【Verve Infocrank Power Meter In-Depth Review-2015.11.24】
http://www.dcrainmaker.com/2015/11/verve-infocrank-review.html
◎【Verve Cycling InfoCrank review-2015.12.07】
http://cyclingtips.com/2015/12/verve-cycling-infocrank-review/
◎【Updating your Infocrank Firmware-2016.03.17】
https://www.youtube.com/watch?v=Wu9RBzJGIdI
◎【Matt Goss' Factor One Pro Bike-Powermeter: Verve Infocrank-2016.04.02】
https://www.youtube.com/watch?v=17O4cxHQ8Lk
◎【Verve simplifies the Infocrank with free download-2016.04.04】
https://cyclingindustry.news/verve-simplifies-the-infocrank-with-free-download/
◎【InfoCrank - how to swap between bikes-2016.05.09】
https://www.youtube.com/watch?v=Rn3CEmfIe1I
迎著風 流著汗 心靈與身體的對話
這每ㄧ刻的感動 都是上天的恩賜
二、曲柄臂式：
5.4iiii PRECISION
(原廠官網)
http://4iiii.com/product/precision/
※World’s Lightest Left Side Power Meter
With PRECISION, you can have it all:
industry-leading power accuracy,
highly dependable cadence data,
lightweight design,
broad ANT+ and Bluetooth smart head unit compatibility,
and 3D power meter technology (patent pending) capable of measuring tri-axial strain on your crank.
※Features
– Patent pending 3D power meter technology capable of measuring tri-axial strain on your crank
– Lightweight, compact design (9 grams left crank)
– Accurate, consistent data (+/- 1% error)
– Improved battery life (100+ hours on a 2032 coin cell)
– Battery status indicator (notification at 15% battery)
– Over-the-air upgrade capability for adding new features and updates
– Compatible with both ANT+ and Bluetooth Smart head units
– User-friendly 4iiii app
– Smartphone compatibility
– User configurable Rider Compensation Factor
– Improvements to saving zero offset and calibration values
– 4iiii product platform integration
– Easy set-up and maintenance
※A new Gen2 4iiii Precision design (aka 3D Precision 2.0)
※4iiii PRECISION RIDE READY
※目前提供兩種方案：
a.Factory Install (將消費者自己現有的左曲柄寄去給原廠加裝)
1-2 week delivery
$399.99 USD
Getting PRECISION on your compatible road or mountain bike left crank arm is easy.
With 4iiii’s Factory Install, you ship us your left crank arm and we permanently install a new PRECISION power meter on it.
We’ll help you ship your crank to us and get it back to you in 1-2 weeks.
b.Ride Ready (目前僅有Shimano 105 (black), Ultegra and Dura‑Ace左曲柄的款式)
Starting at $399.99 USD ($399.99 USD ↑)
PRECISION now pre-installed on new Shimano left crank arms.
Available for Shimano 105 (black), Ultegra and Dura‑Ace left crank arms in four lengths.
Available online and from your local bike shop.
※COMPATIBLE LEFT CRANKS. (a方案可以適用的左曲柄)
ROAD：
Shimano
• 105 FC-5800
• 105 FC-5700
• Ultegra FC-6800
• Ultegra FC-6700
• Dura Ace FC-9000
SRAM
• Rival OCT
Cannondale
• Hollowgram Si (all except 2016 model)
• Hollowgram SL
• Hollowgram SiSL
• Hollowgram SiSL2
FSA
• FSA Energy
Praxis
• Zayante M30
• Zayante M30 Turn
MTB
Shimano
• XT M8000
• XT M785 FC-M785
• XT M782 FC-M782
• XT M780 FC-M780
• XTR FC-M9000 (Race)
• XTR FC-M9020 (Trail)
• XTR FC-M985 (Race)
• XTR FC-M980 (Trail)
Cannondale
• SL MTB (22/32/44)
※COMPATIBLE HEAD UNITS
Garmin
• Edge 500
• Edge 510
• Edge 520
• Edge 800
• Edge 810
• Edge 1000
• Forerunner 910XT
• Forerunner 920XT
• Forerunner 305
• Fenix 3
Polar
• M450
• V800 BTLE
Suunto
• Ambit3 Sport (Bluetooth)
◎【4iiii Precision Pro power meters now in the WorldTour-- Etixx Quick-Step reveal new left/right device-2016.01.21】
http://www.bikeradar.com/road/news/article/4iiii-precision-pro-power-meters-now-in-the-worldtour-46197/
◎【4iiii Precision Pro power meter enters WorldTour with Etixx-QuickStep-2016.01.22】
https://roadcyclinguk.com/gear/4iiii-precision-pro-power-meter-enters-worldtour-etixx-quickstep.html#LfmcWbOKylKXbqRS.97
◎【4iiii Announces New Factory Pre-Install option, Dual Timelines/Prices-2016.04.14】
http://www.dcrainmaker.com/2016/04/4iiii-announces-new-factory-pre-install-option-dual-timelinesprices.html
◎【4iiii’s new Precision 2.0 power meter is unbelievably light-2016.04.15】
http://www.cyclingweekly.co.uk/news/product-news/4iiii-precision-20-power-meter-221153
◎【Updated: 4iiii introduces updated Precision 2.0 power meter-2016.04.19】
http://road.cc/content/tech-news/186245-updated-4iiii-introduces-updated-precision-20-power-meter
◎【4iiii Precision Power Meter - Review of the Cheapest Power Meter-2015.09.12】
https://www.youtube.com/watch?v=jA6te5eQGrg
◎【How to Install 4iiii Power Meter in Less Than 5 Minutes-2015.09.12】
https://www.youtube.com/watch?v=psn1CLpzFKw&list=PLfriHRXl5mY76Ua3brj9FMv9HwDPcL3rd&index=2
◎【Analyzing 4iiii Power Meter Data on Garmin Connect and Strava Segments-2015.09.12】
https://www.youtube.com/watch?v=TLk_NRGBbSQ
◎【4iiii's Precision Power Meter Review and Testing-2016.04.10】
https://www.youtube.com/watch?v=WKDv4-ZriAw
☆☆☆Precision Pro
– 4iiii provides Precision Pro dual-sided power meters to Team Etixx – Quick-Step (at Paris-Roubaix), and these will be released in July.
– This offering will be introduced through the company’s established Factory Install programme,initially installed on customers’ and dealers’ own Shimano’s Dura Ace 9000 cranksets.
– 4iiii plans to extend its dual-sided power meter range later on but it’s not yet saying which chainsets will be included next.
迎著風 流著汗 心靈與身體的對話
這每ㄧ刻的感動 都是上天的恩賜
http://www.dcrainmaker.com/
這個網站也又不少關於Power Meter 的測試及評比，有興趣的可上去看看!
arvinhsi wrote:
就算有設備無法有效應用，有點浪費了...
所言甚是！
但是，就個人的預算選擇適當的功率器材，
是跨出功率訓練的第一步，
所以這裡先花功夫簡介目前有那些器材。(這也是我自己最近開始做的功課)
至於有了器材之後應該如何正確實施功率訓練？
這是下一步要更深入挖掘的、更大的、更引人入勝的題目。
看得懂英文的，就花功夫啃這一本344頁的聖經：
Training and Racing With a Power Meter
(作者： Hunter Allen/ Andrew Coggan, Ph.D.
原文出版社： Velopress)
迎著風 流著汗 心靈與身體的對話
這每ㄧ刻的感動 都是上天的恩賜
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