Powerpod v3 - 4000 watts on cal ride

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doib
Posts: 82
Joined: Mon Nov 11, 2019 11:25 am

Powerpod v3 - 4000 watts on cal ride

Post by doib »

Hi,
I bought few days ago a powerpod v3, which I used (for now) for a single ride on my mtb Speciailzed epic HT 29” with 2.3 inches tires. Initially I had a lot of difficulty connecting the sensors (separate cadence and speed without magnet, original garmin, maybe a little dated). After riding for about 10 km without succeeding, I decided to reset everything, pressing on-off button for 10 seconds and almost immediately the sensors connected. I then performed the calibration ride, following the indications on the garmin 820 and checking the led on the powerpod. I then continued my exit for about 20 km, the pp gave me credible power values, except in two conditions:
• some uphills of the path, wich were very wet and with slippery stones (I guess that it is very difficult for the device to work good in these conditions);
• some passages from the descent to the ascent on asphalt, where the garmin continued to show 0 watts a little too long.
At the end of the ride the average watts seemed to me quite in line with the efforts made, compared to what the smart trainer usally marks me. Once at home, I downloaded the racing files. It resulted in 3 files (which I attach); the first shows zero watts (I think because of the mismatch with the sensors), the second one (calibration ride) shows 4000 watts (!!!) and the third one shows correct values (in my feeling), except the slight delay in signaling the watts uphill.

Please excuse the long premise, the question is as follows. Should I redo the calibration ride to correct watts out of range? Also, I noticed that the date and time of the files are wrong, although I had set it in Isaac (I corrected it later in the 3rd ride file). Isaac himself gives me problems with rounding up the figures set in the profiles, could the problem be in the software?
Thanks for the help, I still apologize for the length of the post and for my english, certainly not the best.

Davide from italy
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iBike_06_01_2019_0001_1_km.ibr
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iBike_06_01_2019_0006_1_km_CalRide.ibr
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iBike_06_01_2019_0001_1_km.ibr
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Velocomp
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Re: Powerpod v3 - 4000 watts on cal ride

Post by Velocomp »

1) It looks like you are press-holding the button for over 12 seconds. This causes a hard reset of the device, which resets the internal clock.

2) the cal ride watts have no meaning; don't worry about them (that's why its called a cal ride)

3) your short ride files are meaningless, unfortunately. They appear to have been made prior to your cal ride

Do the following

1) Connect PP to Isaac. That will re-establish the correct date/time in your unit

2) Do a short ride (5 km). Do not do a cal ride prior to this

3) Post the ride file. I will take a look

In general it is a bad idea to do hard resets out on the road. They should be done only if your device is completely non-functional.
John Hamann
doib
Posts: 82
Joined: Mon Nov 11, 2019 11:25 am

Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

Thank you very much John for the quick and complete answer. It seems that I was wrong to load the third file, in fact it had to be a ride of 21 km, not 1 km ... I try to reload it. Sorry for the mistake, whitout that ride I guess you could not understand much of what I wrote..
I did a hard reset because I couldn't connect the sensors and I thought it could solve (and it actually seems to have worked, but probably I was incautious)..

PS the velocomp support service is really great! :D
PS 2 If i had to upload another ride (the 5 km one you were talking about) should it be a round trip one?

Davide
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iBike_06_01_2019_0011_21_km.ibr
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Velocomp
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Re: Powerpod v3 - 4000 watts on cal ride

Post by Velocomp »

doib wrote: Tue Nov 12, 2019 12:09 pm Thank you very much John for the quick and complete answer. It seems that I was wrong to load the third file, in fact it had to be a ride of 21 km, not 1 km ... I try to reload it. Sorry for the mistake, whitout that ride I guess you could not understand much of what I wrote..
I did a hard reset because I couldn't connect the sensors and I thought it could solve (and it actually seems to have worked, but probably I was incautious)..

PS the velocomp support service is really great! :D
PS 2 If i had to upload another ride (the 5 km one you were talking about) should it be a round trip one?

Davide
What kind of bike are you riding? Please attach photos showing how your device is attached to your bike.
John Hamann
doib
Posts: 82
Joined: Mon Nov 11, 2019 11:25 am

Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

Sorry for the delay, I could only take pictures last night. My bike is a 29er mtb, with a 2.3" front tire (1.4 bar pressure) and a 2.2" rear tire (1.6 bar). Probably the brake and transmission cables interfere a little, but I was afraid that a more external assembly would expose the powerpod too much in case of falls and bumps. I intend to mount the powerpod also on the two other bikes you see in the background, one road and the other always mtb (but I use it for tourism). On these two, a more external assembly would not be a problem.
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doib
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Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

An image of the whole bike.
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Velocomp
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Re: Powerpod v3 - 4000 watts on cal ride

Post by Velocomp »

Your CdA is low for a mountain bike; I have adjusted your profile. Other than that your calibration is fine!

You will get more consistent results on uphills if you lock-out your fork during your climbs.
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John Hamann
doib
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Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

Thank you a lot John!! A last question, about the position of powerpod...do you think i have to move it or it will work fine despite the cables you see in the pictures?
Velocomp
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Re: Powerpod v3 - 4000 watts on cal ride

Post by Velocomp »

I don't see a lot of wind obstruction in your ride file, so at this point I don't think you need to move anything.
John Hamann
doib
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Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

Very well John, thank you for your kind availability. I will continue to follow the interesting updates on the forum.
Bye, see you soon

Davide
doib
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Joined: Mon Nov 11, 2019 11:25 am

Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

Hello John,
can you please take a look at this ride, where I had very high watts just left and immediately after a long descent (at about km 32, slightly downhill and pedaling slowly my PP v3 gave me about 200 watts)?
What can it depend on?
Tank you, regards.

Davide
Attachments
iBike_11_17_2019_0955_41_km.ibr
(576.63 KiB) Downloaded 146 times
Velocomp
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Re: Powerpod v3 - 4000 watts on cal ride

Post by Velocomp »

doib wrote: Wed Nov 27, 2019 8:25 am Hello John,
can you please take a look at this ride, where I had very high watts just left and immediately after a long descent (at about km 32, slightly downhill and pedaling slowly my PP v3 gave me about 200 watts)?
What can it depend on?
Tank you, regards.

Davide
Just after km32 you had a short burst of 200W in a strong headwind. This seems normal to me, and was confirmed in aero coach
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Screen Shot 2019-11-27 at 8.55.29 AM.png
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John Hamann
doib
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Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

Maybe I was not precise. Let's say that from km 32 to km 33 the road is downhill and the power values were initially quite high, at least in my impressions (I've never used a powermeter before...)
I would ask you, however, to check especially at the start, where I saw values over 400 watts in the flat with low speed and low heart rate ... I don't think watts may be correct.
Thank you a lot.
doib
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Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

Sorry John, I saw an error in the image ... I weigh 61 kg and the bike loaded with equipment, clothing and water 15, while the image shows 70 kg for me and 6 kg for the bike ...
Velocomp
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Re: Powerpod v3 - 4000 watts on cal ride

Post by Velocomp »

doib wrote: Wed Nov 27, 2019 9:16 am Sorry John, I saw an error in the image ... I weigh 61 kg and the bike loaded with equipment, clothing and water 15, while the image shows 70 kg for me and 6 kg for the bike ...
61+15 = 76 = 70 + 6

It's the total weight that counts.
John Hamann
doib
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Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

Of course you're right, it's that I tend to think in terms of weight/power ratio.
Anyway, sorry if I insist, but my doubt about high watts just starting my ride remains, can you kindly answer me about that?
Thanks
Velocomp
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Re: Powerpod v3 - 4000 watts on cal ride

Post by Velocomp »

For the first 2 minutes of your ride, PP is recalibrating itself. This may cause high (or low) watts during the recalibration period.
John Hamann
doib
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Re: Powerpod v3 - 4000 watts on cal ride

Post by doib »

Ok, thanks John. Apart from that, the garmin at the end of the race found me a ftp perfectly corresponding with the value detected by my smart home trainer, so I am very satisfied with the PP.
See you soon
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