Stryd Wind Footpod | 400m Track Distance Testing
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- Опубликовано: 2 окт 2020
- I took my Stryd Wind to my local track with a measuring wheel and did some number crunching.
Some people will argue that the Stryd footpod does not need calibrating. Others say that many running tracks are incorrectly measured.
I took time to measure my local track at two points across lane one. Then walked and ran with the Stryd footpod to see what it came up with.
I did a similar test over 10k using ONLY ANT+ on two watches • Stryd Wind vs Old Stry...
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Thank you Stephen. Loved this. My new Stryd ordered yesterday, up grade from Zwift runpod. See you in Watopia with Eddie.
Top man. Loving your work. 💪
STRYD make it very clear in their Garmin watch setup instructions that you are to setup the STRYD via ANT+ and NOT via BT. The Garmin will detect 2 STRYD footbpods (one ANT+ and one BT). You need to make sure when the Garmin detects both connections from the STRYD (BT and ANT+) that you set that status to OFF for the BT one and then go into the ANT+ settings to complete the setup (SPEED-ALWAYS, DISTANCE-ALWAYS, CAL FACTOR-DISABLE, SET VALUE-100.0)
I think that was because in the past you will not get distance/pace info via Bluetooth with Garmin watches. I cannot think of any logical reason why you will not get the same info via Bluetooth or ANT+, unless there is something wrong with Stryd at the software level and I don't think there is.
Do you have any resources pointing to this statement from Garmin?
I use the Stryd wind for both indoors, on Zwift, and out. The speed does jump around a bit so I think there is more value in testing over a longer distance as I have found it evens out very well. I have tested it (uncalibrated) over 14k against the GPS on my Garmin and there was only a difference of 20m.
I haven't used my STRYD pod to measure distance or speed, but using it as a power meter works really well for me, especially in longer races.
The difference in distance reporting is interesting. I have a non-wind Stryd which I've been using with a Suunto Spartan watch (via BLE, auto calibration turned off) where it gives me distance reports that I think are pretty accurate. Recently switched to a Coros Vertix, where I have to pair Stryd via ANT+, and suddenly I need to apply a calibration factor of 2.7% to get correct distance reports. I did one run where the footpod was simultaneously talking to the Suunto and the Coros and got the same result as you: two different distance readings for the very same run, with ANT+ reporting shorter than BLE.
I remember owning the very first Polar foot pod, the early one was the size (and shape) of a mouse. The data was remarkably accurate when tested on a 400m track, the data you seem to be getting is rather concerning. Most foot pod users seem to benefit when using foot pods in areas where buildings or trees will effect the GPS. Personally, I'll use my current Garmin 45 in wide open areas for my important speed paced training sessions. If I have an easy long run I might run through the forest where precision is not so important. I'm not sold on Stryd's power output feature. Thanks for the review.
Good test, I using STRYD footpod for years, running in city, GPS always unreliable,
I think you should continues run instead of pause and start in each 400 minutes, the more you run, the accuracy it is.
I suppose there is a stationary miscounting in the starting several second, after that, everything is fine.
That my feeling, for your reference.
Hello Stephen, thanks for this interesting test. But did you analysed Also the datas directly imported info the power center from the stryd pod? Normally, not depending of the watches, we should measure 400m exactly by lap ?
Another annoying thing with Stryd PM is every time I stop at a stop light it takes a few seconds to connect which actually adds distance. So runs where I hit the lights green are generally shorter. But I love the fact that it is not affected by disconnects from satellites on trail runs. Great for power
I don't get many satellite disconnects these days, especially now with GNSS multi-band
This is known phenomenon, if you wear garmin on your right wrist - it will measure significantly longer distance on track, sometimes up to 10% more (if watch setting are left wrist). To compare it fairly you have to wear both watches on the left wrist.
Remember distance calculation was from the Stryd footpod, not from the Watch. So it makes no difference which wrist the watch is on. But it makes a difference which foot the pod is on.
Love it, thank for sharing🤝👍
I came to this conclusion by intuition a few months ago. then I did a measurement with my steps ... I am not a believer in satellites!
Thaks
I’m willing to bet you cannot connect the pod to two different watches at the same time. Therefore the distance differences that are being seen is the watch that is further off is actually reading from GPS. With they roughly 10m accuracy of consumer GPS signals that explains why the distance increased while being stopped. If you think for example a pair of headphones, they may have been paired with your computer and your phone but if you try to play something on both at the same time only one comes through. I’m assuming same with the Stryd. The Fenix 6 was the primary, then when the Fenix 5 was switched to Ant+ that became the primary. Then the “non-primary” defaulted to GPS.
No it doesn’t work like that. Bluetooth and ANT+ work entirely separately from each other. It is perfectly possible to connect one pod to two different devices and many people do this on a regular basis. Stryd informed that for some reason Stryd Bluetooth does not play well with Garmin watches which is why they always recommend connecting the Footpod by ANT+ on Garmin watches. Oddly Bluetooth works perfectly well on other brands of watch and on Zwift.
Your example with headphones is using Bluetooth for both. In this case I was using Bluetooth for one watch and ANT+ for the other watch. Neither watch was using GPS at any stage.
Question to the watchers ... So totally how many kms he ran as part of this video ? 😆
Honestly even though I'm sad to keep my stryd pod in the box when I'm running outside I reach a point where I feel that Pace and Power are a different way to express the same thing so I prefer to use GPS because it is more accurate.
When I do 12 rep of 400 mt or 6 rep of 1.6 km I have no time to check the device to think about power or Pace...I just read the time to complete 400 mt or the split Pace during 1.6 km...no matter what, I try my best and the fact I can analyze what I have done in Power does not change my future performance, I just give a different name to my ability or my lack of ability. :D
How did you get your watch to display the exact number of meters traveled? I'm using a Garmin Forerunner 945 and it seems to round the meters up only displaying in increments of 10.
Hi Joe. I was using Track Mode. I'll have to investigate! As far as I was aware it rounds to the nearest 10 metres. I hadn't noticed anything else! But are you sure it's not just at the end of a run it will give exact numbers, whereas whilst running it rounds up?
@@FilmMyRun Thanks for the quick reply!
I'll have to do some testing on my end. Earlier today I believe even during the run it was only measuring in 10m increments.
Looking at the video the shot at 1:39 is a perfect example. On my end I can't get that, it would be 390 under the lap distance.
Hi, my Garmin Fenix 6 only measures with 2 decimals after the comma, how did you set it up to 4 decimals in total?
This is the new Track Run mode on the higher end Garmin watches. So only the Fenix 6, 245 and 945 currently. It's beta software which you can download from the Garmin forums.
You can also view all the digits when loading the fit file from garmin connect in fitfileviewer.com.
I've used a couple stryds for distance/pace for about 5 years. Have not checked calibration as accurately as you have. Mine is mated to a Polar Vantage M2 watch. I usually walk or run the same 13.1 mile course on weekends. I have noticed that its consistancy (1 mile marks and finish) is super accurate. Usually will hit mile 13.1 within a 10-20 yard variance. The only problem I have is the difference between running a Half vs power walking a Half. I have to walk about .3 mile further to achieve 13.1 miles vs the 13.1 running distance. This kinda coincides with what you were getting on one of the watches when you walked vs ran. I guess this is due to the cadence difference between running and walking. Speed doesn't seem to affect the accuracy much. May need to get an extra stryd and custom calibrate just for walking (The running distance seems to be the most accurate with certified race courses).
Yes, I have found the accuracy of the Stryd is influenced by your cadence and stride length, regardless of speed. I probably won't be buying the brand new version though.
When using the Stryd footpod, can you still use the GPS from your Garmin for the session? Or does it automatically use the distance data from the Stryd?
No your watch will automatically use GPS unless you tell it specifically to use the Stryd for distance and pace. In fact I recommend using GPS. You’ll still get power and cadence from the Stryd.
@@FilmMyRun Thank you for letting me know!
I know I'm a year late to this party, and someone else (including you) may have mentioned this somewhere here in the comments, but 0.40 km does not necessarily equal 400 meters. For example, 403 meters will display as 0.40 km. There is likely some measuring and reporting error in there. Was/Is it not possible to change the watch's reporting from km to meters? Not complaining, just curious. Also, the increase in distance while you are standing still is most likely cause by the dynamic GPS measurement trying to get a good read on your location. I appreciate your taking the time for the tests.
Haha yes 0.40 is definitely not necessarily 400m. It could be 401 or 409 definitely aware of that. The only way to change to metres is to use Track mode but that still rounds up to the nearest 5 meters I think. I use track mode in a later video about Stryd. There adding odd distance at the end was a Bluetooth issue. Apparently Stryd and specifically Garmin watches do not play well together. I was informed of this after I made this video. So I never connected Stryd to my watches using Bluetooth again. Never had that issue since.
Are you doing a rolling start? starting the lap in the lane with stryd always gives me a wrong distance (shorter) with the track run mode i get the correct distance without the 3-5 sec rolling start, the same applies to power values.
No. I started on the line and finished on the line with no rolling start.
The Stryd did in fact perform perfectly well within an acceptable margin of error in this test.
New video Stryd test which you might find interesting. ruclips.net/video/aG6vq7mox28/видео.html
I own a Stryd, but not a fanboy by any means. Did you add it as a foot pod or power meter? Do you have Stryd Zones the app installed?
I do have the Stryd Zones app installed but that is for power and I wasn't concerned with power for this test. I had the Stryd installed as a footpod to measure distance and pace.
@@FilmMyRun Saw your comment on the Facebook page too. Curious what people make of it. I really use it for treadmill running to have some consistency across machines. But the folks on that page really drink some serious Kool Aid.
Tracks can cost millions to build, and they need to be sanctioned/approved for records. I doubt that it would be less or more than 400 meters! Interesting test though.
Oh I totally agree but the reason I did the test was because the Stryd fan boys and staff will argue that many tracks are not 400m.......mainly because it gives them an ‘out’ when people complain that the Stryd is not accurate.
Hi, thanks for your video. It is in my opinion a very clever way to test Stryd pod and probably one of the most honest review about this device. I purchased Stryd willing to use it with my Garmin Fenix 5 Plus and I decided to not use it anymore. The reason is the lack of calibration. If Stryd cannot read correctly the distance all the Data are compromised...Pace, Cadence, Power could be interesting but only if Stryd was accurate. In my experience it is not.
Garmin GPS it is not 100% accurate either but still way better.
You can easily calibrate your Stryd on a Fenix 5 Plus...
@@XavierMontet Calibration does not change/improve the accuracy, it just adjusts the value of the reading. Stryd has been shown in a recent scientific study to have a variability of 4.3% (so +/- 2%) which is excellent for a footpod and fine for power or pace I suppose but not for distance where GPS will be a lot better if you have a decent view of the sky.
Can you find the reference for the scientific study please. I'd be interested to see it.
@@FilmMyRun Sure here's a detailed overview : www.outsideonline.com/2413011/running-power-meter-comparison-study
@@XavierMontet I think that PeakaBry pointed the problem very well. You are right about the calibration...it happens automatically but it does not improve the accuracy for outdoor running. Now I use Stryd for treadmill... I do it because fenix 5 Plus is not capable to read properly your speed on a treadmill. I had several chat with Garmin and at the end they were honest saying that unfortunately the device is weak about that and so they advice to use a foot pod.
So can u conclude that speed and distance set as always via stryd is not accurate too? Still calibrating between pod and gps
It's difficult because each Stryd footpod unit tends to be slightly different. Some people find their unit is bang on with no calibration required. All three I have owned I would argue need to be calibrated to be 'correct'.
I’ve wondered what value these foot pods actually add.
Well, historically footpods have just been used for cadence, which they are good at. As they have become more sophisticated there are lots more uses but also many more fail points.
Consistency and instant pace. A foot pod cannot be confused by bridges or dense tree cover. The instanc pace is *way* more stable then any GPS watch I've ever seen. You also get a power reading, which is mostly a elevation/grade adjusted pace that you can use to pace races. The latter isn't that important to me since I live in a pretty flat area.
For easy runs it's definitely not worth it, but I absolutely love it for pacing track workouts and races.
On track mine comes in almost 100 accurate but on hilly 10150m course comes in nearly 700 meters short, i expect a couple of meters out accuracy but 3 minutes out is too much , really disappointed with it's accuracy. on treadmill it seems to be out for me too.
Maybe it is its connections, but reason to get a footpod was to get zwift accurate runs for me and so far based on cost the zwift pod does a better job although impossible to go above 13.5km per hour
If you calibrate the Stryd it should be much more in line with your treadmill display. Uncalibrated, yes, the Stryd Wind will be significantly slower than your treadmill belt speed.
Do you think the difference in distance measurement is an issue related in general to Bluetooth vs ANT+ or it is specific to Garmin implementation of Bluetooth stack? Could you perform the same measurement with Polar Vantage or Grit that rely solely on Bluetooth for connection to footpod?
I have asked Stryd about this and they say they do not know why Bluetooth does not work with the Stryd on Garmin devices. Bluetooth works very well on Zwift and using other makes of GPS watch, but for some reason does not work well on Garmins.
You forgot to turn of "auto calibrate" for the Stryd mate
Haha, if only. Nope auto calibrate off. I’m afraid an uncalibrated Stryd is just rubbish out of the box….. and not as good as GNSS when it is calibrated!!
@@FilmMyRun ah okay;) I was so unfortunate to run my first marathon (copenhagen 2022) with the auto-cal function enebled :( it only recorded 41,8xxx something! bummer!
Missing a lap after calibrating the styd foot pod
Missing a lap? I didn't calibrate the footpod at all. Or are you talking about your experience?
Maybe this is why hamsters run on wheels all day, they are looking for accuracy.
Stryd indoor results really disappointing. Waste of money if you are going to use it for distance measurement. May be good for Power