Having had some issues with ‘sticky watts’ using power meter pedals and the Zwift Hub (for resistance) I recently switched to the Kickr v6, using the pedals for dual recording.
The pedals are connecting the the Wahoo app on my phone.
Does anyone know if and how I can upload the pedal file to Zwift Power?
I have had some issues with people calling me a cheat due to sticky watts and I want to demonstrate my performance.
You record your pedals with your head unit (garmin etc) and you send this file to zwiftpower after race in the analysis tab
Hi, just dropping in to help a brother out. to get and upload a dual the steps are as follows. This is just the general process for anyone who finds this thread
1: Trainer paired to zwift as your primary
2: Power meter to head unit. it’s good practise to pair your HRM to both zwift and the secondary unit simultaneously
3: If your head unit doesn’t have a dedicated “indoor” mode (older ones might not have it), just ensure all GPS settings are set to disabled
4: hit record when you want to start the dual
to get it on to zwiftpower:
1: get the .fit file from your head unit, through usb or from whatever app it automatically uploads to
2: zwiftpower > analysis tab > create new dataset
pick the event/activity from the dropdown menu, if you want to assign it to a specific race or event you can also do that. that’s your primary file from zwift
then you can just manually upload the .fit file in one of the lower fields, that’s your power meter data or secondary and save it either publicly or privately
that’s a lot of steps but the whole process can be done in probably a minute or two once you know where everything is. unless you want to do it because you want to do it, i still wouldn’t bother unless you are planning on hitting some serious numbers or the race rules require it
cheers
Both the above replies are correct.
I also had some initial difficulties trying to figure out how to do it.
I’ll throw it some advice that I would have given to myself and hope that it helps you.
My big issue was , I had the 2 power recordings but they were on different platforms (Zwift and CooSpoo).
I wanted to get the 2 recordings onto Zwift Power for comparison.
Zwift Power will already have your Zwift data.
I needed to get the CooSpoo fit file from the CooSpoo eco system.
I do this by completing a ride and saving it in Zwift and CooSpoo.
Saving to CooSpoo is exactly how I normally do IRL, outdoors, so you will save that recording as you normally do
Then I go to the CooSpoo site, select the ride I’m interested in then e mail the fit file to myself.
I go to my e mail account and download the fit file to my phone (or computer).
Now the fit file is on my phone and when I’m in Zwift power loading the 2 recordings, Zwift power will have the Zwift file and it will ask for the location of the fit file to be compared.
Select your download file and it will be there
I name all my fit files by date to keep them sorted.
It takes 10 min to read this, 15 min to understand it but only 3 minutes to actually do it.
You’ll do the same way every time and it’s really quick.
worth a quick read as well How To Use ZwiftPower’s Dual Recording Power Analysis Tool | Zwift Insider).
Maybe this could be worth looking at:
Or this one:
That looks like exactly what I need, thanks!
I have a question about Assioma pedals that was raised on the FB group.
How often should a manual calibration be done?
The manufacturer states it should be performed with a new install.
I tend to do one with any firmware updates but other than that, I only do it once in a while.
I no longer check my tire pressure every ride because I find, in the Winter time, they don’t lose much pressure and my trainer and pedals seem to show consist readings.
When I add air to tire or perform manual calibration, there is no variation from the previous power readings.
I always perform multiple trainer spin downs every ride until I dial in my calibration factor to 1.7 then every thing seems to agree regardless of last calibration or air pressure check.
I have Assioma Duo and Neo2T…if i calibrate daily i don’t notice any difference with calibrating 1x per week or even longer. What i notice is that if my CHAIN is not clean it has a bigger impact on power comparison than a calibration.
With you using a Wheel-On Trainer you really need to have the same PSI every ride to have the same results from your trainer.
Saying that i would always use Assioma as Primary Power if i would have your setup.
The wheel pressure doesn’t seem to have a noticeable affect.
Several ideas why.
The recommendation to inflate to 100 psi was made back in the days before dual recording was a thing so it was probably an attempt at standardizing the set ups with out really knowing the effect.
I use my retired road tires.
They are 28 mm.
100 psi was common back in the day with 23 mm tires but I had already started decreasing pressure with 25 mm and the 28’s are 70-75.
(I run slightly higher pressures because I still have tubes and rim brakes).
But 100 psi with 28 mm on the trainer?
I don’t know.
I do it but I don’t sweat the PSI like I used to as long as my recordings are close.
What should we use for comparison… Average power or normalized power or something else?
100psi is the normal for 23mm tyres but for 28mm far too high, you would have maybe 75psi with those and depending on your weight maybe less according to some people if you are light weight. I have tried the 28mm low PSI idea and always found the feel too squishy even with my light weight (outdoor riding).
Perhaps the go is to have a particular trainer wheel and tyre which is 23mm setup. The wheel can be quite cheap. This is also better than burning up your outdoor tyres. This is what we used to do in Athlete Lab with the PowerWatts bikes connected to Computrainers or for people doing BYO bike (they could borrow a trainer wheel).
This faffing around is the best reason for wheel off trainers! Aside from Continental trainer tyres going BANG!
I have Assioma Duo Shi pedal setup with my Kickr Bike and calibrated once when they were installed. I haven’t needed to do so since, the power reporting has so far remained the same.
I also replaced the bottom bracket in the kickr bike with a better WheelsMfg version, also no changes aside from quieter and smoother running. The power reporting between both corresponds.
My kinetic trainer agrees with the Assioma’s with a calibration factor of 1.7.
Perhaps if I used different tires, then I might find that I need to use a calibration factor of 1.6 or 1.8.
I’m not going to do the experiment.
I just use up my collection of old road bike tires and as long as trainer and pedals agree, I guess I’m happy.
It was interesting to see that tire pressure was not as big a factor as I previously believed.
Of course, with the kinetic trainer, tire slippage results in loss of reported power because power is reported from the roller.
With a speed sensor, slippage would give excess watts.
