direto erg mode in zwift

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raphnou
Posts: 46
Joined: Wed Apr 11, 2018 9:23 am

Re: direto erg mode in zwift

Postby raphnou » Wed May 16, 2018 11:06 pm

Elite Admin S wrote:Hi guys

@raphnou, you're doing a training quite "extreme" (big change in power in few seconds).

Please do this two tests:

1. do the same training (with the same segments) in my e-training and let me know if the situation is the same

2. in Zwift, increase a little the segments (20-30s instead of 10s) and let me know if the situation improves

Then, let us know.
Regards



Hello Elite,

I wanted to do the same training with MyTraining and compare with Zwift the values, unfortunately MyETraining did not add the intervals in the TCX file, so it is unusable. Another problem that I discovered with MET, the arms fall to me ...

Very disappointed to go round in circles, sincerely if your software offer was up to scratch, certainly the experience would be better.
But that's too much, I abandon MYETraining definitively, I just keep it for calibration hoping that once paid, I hope we can still calibrate the Direto for free ...

So I continue on Zwift trying to keep me on a program, for the moment I use a smoothing at 5, but I find that the Direto still has difficulties to maintain the constant power for powers above 100W

For example with Cheetah, I see for a target power at 150W an average of 146W, and for a target power of 180W I have an average of 174W.
I'm going to try a freeride session tomorrow because finally I have very little ride with this mode I hope that everything will be fine ...

Could you just give us the characteristics of the Direto on its reactivity, so that we can modify the training of Zwift by taking into account this latency, because some training of Zwift have intervals of 10 seconds, thus going from 105W to 325W then keep the 325W for 10 seconds it's impossible to do with the Direto.
Moreover, if Zwift offers intervals of 10 seconds, that means that trainers are able to do it, is not it? But who can do that at Elite?

I will admit that I was discouraged and called the online store to claim my refund before the 30 days, but the shop did not want to know because I had used the Direto.

have a good day

athirayoub
Posts: 1
Joined: Thu Oct 11, 2018 4:24 pm

Re: direto erg mode in zwift

Postby athirayoub » Thu Oct 11, 2018 6:06 pm

I completed the same structured workout on my new Direto (default smoothing setting of 2) as I had done with my previous trainer (Tacx Flow Smart) 3 days before. ERG resistance and power output on the Direto was all over place compared to my Tacx Flow Smart (see image for power profile comparison), and all the over/under/random resistance punched the legs so bad that I barely made it through the entire workout (effort score also attached). It was also extremely frustrating not knowing what random resistance the trainer was going to apply next during a block of (what should've been) static power output.

90% of the indoor training I do is in ERG mode, so if I can't rely on the Direto to keep me in the power zone dictated by a structured workout, I'll return it for another Tacx... as they seem to have a better grasp on how ERG mode should work.

I'll try increasing power smoothing as suggested by some, but it seems like more of a work-around than a solution... and I've seen nothing from Elite confirming that this is something they're actively looking into addressing. C'mon Elite, you've built a great trainer with the Direto... don't let it go to waste because of (what I believe to be) some bad firmware preventing it from adjusting ERG resistance properly.

TrainerComparison.jpg
Same workout, Direto vs. Tacx Flow Smart
TrainerComparison.jpg (233.11 KiB) Viewed 220 times


Athir

User avatar
Elite Admin S
Posts: 1351
Joined: Tue Nov 08, 2016 10:18 am

Re: direto erg mode in zwift

Postby Elite Admin S » Thu Oct 18, 2018 12:32 pm

Hi Athir

About the Relative Effort value, it's something that is calculated by Garmin and I really don't know how it is calculated.
About the comparison you've posted, you have to consider that Tacx shows a calculated power, while Direto shows you a lecture of the real power you develop. So, it's absolutely normal that the values you see on the chart are apparently more stable than what you see on Direto.

Please read my answer on this topic, there are also charts and detailed explication (it's about Drivo, but it's the exact same concept):
viewtopic.php?f=35&t=78

Regards


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