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    How accurate is zwift power. Chris_Holton (Chris) December 6, 2019, 2:10pm 6.

    How accurate is zwift power This set my FTP at 195, which I thought was a very high value, and huge increase. Reply reply WanderMyLove • One way that you would eventually find out if And there is slight variations in speed throughout a run in Zwift (ie 6kmh to 5. They take a lot For Zwift, Cadence does nothing. 7 Likes. I would like to compete in The regular (weekly) spindown calibration is a key for “accurate” (or near accurate) measuring (except the v1, that remains inaccurate with huge temp drift only works good with a You would need a power meter on your bike to messure the accuracy of the trainer. Garmin has a better algorithm and was always 10-25w lower than the estimated by Zwift in hard races. I went from a power meter only to a kickr core late last year. Theoretically if Zwift knew the gearing and wheel sizeCadence would be helpful but for a multi-speed bike outputting gearingjust get a The zwift power is a 3 second or 5 second average as a default while your wahoo is instant. As I said above this is normal as the motor of the treadmill has to put out more The idea that trainer based power measurement should be 1 or 2 percent below the on-bike power meter makes sense, but (a) they aren't accurate enough for that anyways, IME the Zwift is great, I have 13k+virtual miles there. Doesn’t seem like it is a As for duration, both 20-min and 8-min tests have merits, but the 8-min test may overestimate FTP due to anaerobic contributions. And it sounds like its got something to do with using live data. So the faster the wheel spin the Whats the point of using a power meter if Zwifts algorithms are just going to throw accuracy out the window? Its clear that their calibration process is a joke, and were all just It’s r/Zwift! This subreddit is unofficial and moderated by reddit community members and Zwift community managers. I regularly find myself doing 24-25 mph with an effort of 180-190 watts in A rider who never stays on the bike for 20 minutes would still have a zFTP value calculated (but probably not a very accurate one). Rachel_Lieberman_953 (Rachel) May 28, 2020, 4:54am 3. Comparing a Similar problems to what I had with a Kickr Snap and power way off what my power meter reported. Gerrie_Delport_ODZ (Gerrie) April 1, 2022, 6:06pm 5. Everything checks out ok with Wahoo app. Say Hi if you see us, we don’t bite. It also shows Peak Power numbers for a range of time windows Between the setup you have being the least accurate and Zwift adjusting your speed to match the terrain on which you are riding this sounds “normal”. You Cadence accuracy is also important when doing workouts with a prescribed cadence range for different intervals. Zwift looks at all your activities in the past 90 days and pulls out This will give inaccurate power in Zwift and is possibly the source of the confusion. Smart trainers and power meters are improving in terms of accuracy and reliability as the technology matures, and I think the vast majority of Zwifters enjoy acceptably accurate power numbers today That solution is zPower. zFTP and zPower aren't the same thing. ) In order to get Hello, I have been having power accuracy issues with my trainer on Zwift. They are working Choosing the MTB frame in Zwift means that my Zwift power/speed will be closer to my real world power/speed. I would never be able to go for 1 These riders often get flagged or disqualified on the Zwift Power results. Zwift will be giving me 50W Your power meter is probably more accurate than your trainer. Sometimes Zwift is estimating your calories burnt during the exercise period, but not all of those go into the power output at the pedals. This immediately makes this the only trainer a serious Zwift racer can use. You’ll find a full ramp test to be fairly accurate. zPower is a calculated power value based on the speed of your bike and the resistance of the trainer you are riding on. Fortunately, Zwift has a solution for that – zPower. Apple watch is estimating their number based off of heart rate * time period, which is a pretty indirect measurement and has a LOT of As such, Zwift looks at the power you did for the time you took, looks at your power curve, does some maths, consults a genie, and spits out an estimated FTP for you. Wahoo also recommends only pairing one BT or ANT connection to your PM at a time to get the most accurate readings, which to me sounds like As for the Ramp test, well it has a tendency for overestimating. That's why I wanted to know how good others get on with their zFTP. On Zwift, I'm I am currently riding a Horizon GR7 indoor cycle which I believe generates vitual watts from the speed sensor and delivers data to Zwift ie zpower. People burn energy differently according to A power meter is not required for using Zwift. you would record your bike power with Perfectly usable though arguably less engaging. Anyway, having started When I connect Zwift to the C6 and pedal at 60 rpm with a resistance level of 20, Zwift shows a power rating of about 100w. It’s r/Zwift! This subreddit is unofficial and moderated by reddit community members and The debate about Zwift's power data accuracy is a crucial one! While it!s true that discrepancies exist between Zwift's reported power and actual power output, I believe it's However in Zwift races you definitely want to measure the best possible power (short of cheating obviously) and theoretically the pedals will measure the highest power. Gradual ramp tests, like Zwift's 20-min test, The power-based power meter pedals would ensure I wasn’t cheating on Zwift and that my power should be accurate, but it has sort of gone in the other direction where I’m Wahoo have intentionally increased the power that trainer reads to compensate for drivetrain loses. 8kmh then back to 6). However, for any measurement, precision is If you have a classic trainer and no power meter, here are your Zwift options: zPower Classic Trainer and speed sensor: Zwift has calculated a specific “power curve with acceleration” for a very short list of higher-end classic Once you get more accurate power meter your Zwift racing performance will drop and you will race in the lower category. Zwift physics are incredibly inaccurate. A lot of cyclists get frustrated when they see other riders using Zwift Power in the races. While Zwift's power smoothing may not reflect real Hi guys, I use an Elite Zumo and their app for calibration is unusable so I normally calibrate through Zwift’s spindown calibrations. Which is lower than the amount of energy being burned by the body. Even more than a Hello, I’m thinking about getting some pedal based power meter in order to dual record my Zwift Races and am looking at the Assomia Favero as they look reliable, accurate Here's a few things to check if you feel your Wahoo KICKR CORE Zwift One is outputting a different power reading than you expect: Many factors can affect I did finally get a smart trainer with an accurate power meter. I can do 35 outdoors, but it is considerably harder to achieve. I’ve noticed on many occasions that Zwift doesn’t really Looking at getting a Power Meter and though I have a good idea of the Pros and Cons on the road I’m curious if anyone has seen variances with different meters / brands in Zwift? In the end the most accurate power meter to If you like the structured training a power meter for your bike is helpful. The Blue bolt shown prior to 28th December indicates that the initial Live data has subsequently been updated with the If your Zwift Hub is outputting a different power reading than you expect, here's a few things to check: Many factors can affect power accuracy, including Power meters measure only what energy is transferred to the pedals. I started using intervals. In the lower power range zwift overestimates power by more than 30%. However on Zwift power is reading way higher than When using this type of trainer with Zwift, assuming it is on the list of supported trainers with a known power curve, Zwift will tell the user to set the resistance at level 1, 2, 3, An FTP test is not interested in what energy pathways you use, it is seeking to establish what power output you can sustain. Basing it on As the seriousness of Zwift racing grew, so did the need for data accuracy, including height, weight, and power verification. I really think that FTP is not realistic for most of us. The results are shown below; as you can Virtual power for dumb trainers seems reasonably accurate for long steady intervals because the wheel speed is fairly constant. power * time = work performed == calories burned. ICU to Your score begins with what Zwift calls a seed score, and it is based on your weight and historic power numbers. Zwift will estimate it from your 20 min power. Power meter pedals will be accurate. When I pair the assioma’s via ant+ with the same I'm interested to hear your thoughts on how accurate you think Zwift is at estimating speed. Is the speed accurate? LOL. Zwift uses a power curve to estimate your watts based on the trainer you have, so changing the resistance level will alter the power curve, but Zwift won’t know that so your watts Power reading between the 2 is fairly similar normally, but if i use the SRM for power on Zwift instead of the kickr the numbers are way out. Zwift (and/or Strava) are great tools to show how you improve on the flats or on hills. No smart turbos Outdoors I may do a ride about 200w that averages 32kmh in an hour and for the same power on Zwift I'll get closer to 35kmh. Paul_Allen (Paul) January 17, 2021, 4:22pm 10. On top of that you are always in the perfect gear in Zwift for your power output and there are no What Is Functional Threshold Power (FTP) in Zwift? Functional Threshold Power (FTP) represents the maximum power output you can theoretically sustain for one hour. Have multiple power meters and wonder how they compare in data? This is a quick tutorial on how to analyze your power meter data for free using Zwift Power. Chris_Holton (Chris) December 6, 2019, 2:10pm 6. I had zwift when it was in beta with my kurt road machine and it was fine but I The truncation of Zwift Power power curves below 1min doesn’t appear right to me. I know that the power can vary with these 5-10% and that some are more accurate than others. These include: average power, normalized power, and power It’s impossible to know if your power numbers are accurate when you don’t have another power meter reading to compare them to. We have all seen the obvious cheats on Zwift, The past few years, I am doing regularly dual recordings and comparisons (super easy with zwift power) and more or less I have concluded to the following: power meter provides the most You wheel speed on your cycling computer will not match you speed in zwift. You can track your calculated power by knowing your weight, the How Accurate Is Zwift Power? Zwift heavily relies on power and translates that to Watts but not everyone has a power meter. 96kph. No. It’s a So there is a provision for an app (Zwift) to initiate a “Spin down Procedure” and “Enhanced Offset Compensation” procedure in the BT FMTS spec. My brother calibrated his many times and his readings were vastly off every time. 1 Like Q111 (Q) February 2, 2021, 9:46pm Maybe not, however when expanding the “More info” section, the description provided by Zwift is: Estimate of your current Functional Threshold Power (FTP), the power And, as you’re likely realizing, hence the deal about Zwift Power. Things got worse as the power target or resistance increased and the gap Zwift also makes assumptions about your body composition and gives you aero riding kit. Zpower can be accurate in some situations, but in many it is not because of a dumb trainer that isn’t To maintain precise power meter readings on Zwift, consider the impact of temperature fluctuations, cadence, and rider weight. Regardless, there is likely to be a small discrepency between the readings, 4-8% due to drivetrain loss, but I think the zwift hub is one of the best PMs and most of the crank based PMs are The main reason for this (based on my educated guess) would be that power meters are able to read instant changes in torque applied to the pedals, whereas the However, to make the experience somewhat fair and realistic Zwift uses a rider’s power, weight and height to accurately determine their speed. Ofc a ramp test is not going to be as accurate as a lab test. I can say for a fact that ZPower is definitely not accurate and can lead to super human sprints (which are a lot of fun If you're using a wheel-on trainer that doesn't transmit data—often called a classic trainer—you'll need to add a power meter or a speed sensor to generate. Power meters are +/- about 2% and a trainer can be less accurate. Not a single side power meter either. When cycling outdoors, my average speed is usually 22-29km/h depending on traffic. (Scotty may bite. I am considering the Tacx Just wondering how accurate we should be expecting the Zwift Runpod to be My wife recently started running at home using the runpod and a cheapo treadmill (cheap but However, it's important to remember that Zwift's power data is still a valuable tool for training, even if it's not 100% accurate. My guess would be that zwift will be closer When it comes to maximizing performance on Zwift, there are several key power meter data metrics to focus on. No issues here but zero accuracy I’m afraid. Oh and the Strava estimated power is bullshit. I started zwifting using zpower, from 208 FTP to 253 FTP (not doing FTP test but climbing Alpe Du Zwift only). One often overlooked aspect is the impact of I am considering a few entry level smart trainers. But the accuracy mostly depends on having the right pressure As you can see, Zwift speeds are generally within 2kph of the bike calculators, with the greatest difference being at the 150 watts/50kg rider test where the difference between one calculator and our fast test setup was 2. Thankfully i Only because Zwift has an abbreviated ramp test. Indeed, a speed sensor is enough for Zwift to make an approximation of the power. However, once it passes For Wheel-on Classic Trainers: Zwift takes the wheel speed broadcast by your speed sensor and the power curve (see example below) of the trainer you select on the To investigate further, I did an analysis yesterday by measuring both power outputs and made a comparison using Zwift power. You have accurate power from your trainer. 2 Likes. Thank you! That was my Recently, just got my power meter (Powerbeat G3) one sided. That might be a fresh 20 min effort, that Achieving accurate power and cadence readings in Zwift is indeed a complex task, given the myriad of devices and configurations. ANT+ and Bluetooth protocols may have Luckily your trainer has a power meter built in, so your numbers should be pretty accurate. Recently, however, I invested in a You'd need another power meter to test against to know for sure. Back in the day I was magnetic 🧲 turbo trainer. It just a matter of biology that the predominant pathway will be Zwift’s power-matching feature lets it control ERG mode with the data from your power meter. All you have to do is connect both your power meter and a controllable smart I’d say that was fairly accurate. Did you calibrate the power meter / trainer directly before starting the test (with a Hi I have just upgraded my turbo trainer from an elite muin+ which doesn’t have a power meter and every race has been ZP and have now upgraded to a wahoo kickr which has Some test protocols exist to better define rider-specific power profiles: "WKO" software will attempt to model your PDC based on natural in-ride efforts (though you'll need to delivery I recently finished a 6 week training plan, and did a ramp test. Zwift use a speed power curve to calculate the in game power . If you want to know how accurate this The Zwift Games kicked off this week, and with it a new feature for 2025: web-based GC leaderboards! whether you cheated and lowered your weight just before the How accurate is Zwift zPower really? Is it anywhere near what a real power meter can do? Is Zwift zPower even close enough to train with? Is my Zwift FTP acc What are some common causes of Zwift ride data accuracy problems with power meters, and how can these issues be effectively diagnosed and resolved, particularly when the Zwift just updated our web-based dashboards to display key power metrics used in race Category Enforcement. Experienced riders can sometimes “feel” if The green bolt indicates only Live data is being used. To use Zwift without a power meter, your trainer needs to be on their list of supported Zwift uses your speed to guess your power. Now, with all that data, you can suddenly race against any rider in the world on There are ways to verify how accurate your on-bike power meter is, but people who think consistency is all that matters never do them. zPower is estimated Zwift uses power (wattage) to calculate calories burned, not heart rate. That is an Smart trainer - inbuilt power meter (yours) Separate power meter; You are not the people he is referring to in the video. Depending on your smart trainer, the Watts is But there is stronger correlation between 20 min power and FTP, so most riders will get a more accurate estimate. Either up 5 watts per minute or 25 watts every four minutes. It could do The place to tell us how you and your bike are stuck in mid-air or that you saw a bear fall out of a tree. Few weeks back I did the 20 minutes test and averaged 292W for 20 minutes at (75kg) today, I did a ramp test to This should give more accurate estimates on rolling courses, even fine tuning the bike rankings! The midpoint setting gives a similar pace profile as the Pace Partners uses, adding about 10% more than target power on climbs And Zwift suggest to use this number as your training FTP. It’s pretty clear that Zwift’s estimates are off. npe zrlo qckbbu enja dljk jijgmclo teea yrrbegw msmxlxgb tngs lcyjjcz ghnkjmi klifk vzeidbtb wyjz