Powerpod only periodically showing power

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David Currie
Posts: 3
Joined: Tue Mar 17, 2020 10:24 pm

Powerpod only periodically showing power

Post by David Currie »

Hi,
I have a powerpod V3 which I've had for nearly a year.
It has been working fine until recently when it has begun to show 0 watts for most of a ride and will only show power numbers when I am generating higher power (such as moving away from traffic lights or climbing steep gradients.) The power number, when is is showing, also seems to be too low.

I have a wahoo speed sensor mounted on the front wheel and a wahoo cadence sensor mounted on left crank and they are all paired to a lezyne enhanced super GPS. The powerpod is on the handlebars
All sensors seem to pair well to each other and to the lezyne head unit.
I had recently changed the batteries in the wahoo sensors however, I did have a few rides where the powerpod was working correctly after i had done this.

All other data recorded from the powerpod seems OK except for the descents which seem to show way too much braking. This particular ride was on a gusty windy day.

I have tried a new calibration ride which was successful, however during the ride after calibration I had the same problem.
Any ideas as to what may be causing this?
Ride file and bike setup attached

Regards
David
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Velocomp
Velocomp CEO
Posts: 7793
Joined: Fri Jan 11, 2008 8:43 am

Re: Powerpod only periodically showing power

Post by Velocomp »

The problem is your Crr, which in this ride file has somehow has been set to -0.0265.

To give you an idea of what this means: A Crr of 0.00 would mean that there is no friction between your bike tires and the road. So, if you were coasting on a flat road with no air resistance, your bike would coast forever with its speed never decreasing.

But a negative Crr is even more amazing: on a flat road, as you coasted your bike would pick up speed! An obvious impossibility...

Please do the following:

1) Connect your PP to Isaac

2) Go to Device/Setup Device...

3) Enter the parameters for you and your bike

4) In the final step, select "Best Accuracy"

5) Do a new cal ride

This should fix things.
John Hamann
David Currie
Posts: 3
Joined: Tue Mar 17, 2020 10:24 pm

Re: Powerpod only periodically showing power

Post by David Currie »

OK - Thanks for the quick response. I'll give that a try and get back to you.
David Currie
Posts: 3
Joined: Tue Mar 17, 2020 10:24 pm

Re: Powerpod only periodically showing power

Post by David Currie »

HI John,
Worked perfectly thankyou.
Velocomp
Velocomp CEO
Posts: 7793
Joined: Fri Jan 11, 2008 8:43 am

Re: Powerpod only periodically showing power

Post by Velocomp »

David Currie wrote: Sun Mar 29, 2020 9:56 pm HI John,
Worked perfectly thankyou.
Nice to hear!
John Hamann
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