No Power Displayed or Recorded

[John Mac]

I went out this morning to ride, connected my PP to the mount woke up the sensors as confirmed on my Garmin and turned on the PP. I got a green light for go and rolled out of the driveway. My power display never left Zero. File is attached below. Any idea what is going on here?

Also, I'm having a heck of a time tightening my mount to keep the PP from moving. Had to use a screwdriver this morning to get a little more torque than my fingers could provide. It looks like the holes in the PP may be rounding out a bit. Any ideas on how to curb this?

Cheers!
John

[Velocomp]

Please provide a photo showing your PowerPod attached to your bike, with the attachment bolt.

When you reattach PowerPod to its mount it is very important to rotate it into the same position where it was previously. If it is rotated into a different position then it will take up to 8 minutes for the PowerPod to automatically recalibrate itself.

In your ride, PowerPod was reattached at an angle pointed slightly down from its previous position (notice that in the graph, the red slope plot is always negative, even though you were riding on the flats). So, PowerPod thought you were going downhill (you weren't of course) and that gravity was powering your downhill ride. So, no watts.

Your ride was only 4 minutes long so it never had a chance to finish its recalibration.

Please also post a photo showing your mount holes.

[nicholp1]

John

I had exactly the same issue on as described using you supplied mount on one of my bikes. I’m quite aware of the 8 minute re-calibration and sure as ever the reading was fine once that time had elapsed. It is worth pointing out that there is still a degree of fore and aft movement with the PowerPod on the standard mount.

I think you could probably increase in the flattened go pro tab in height by a fraction on the PowerPod case moulding to ensure zero movement
On another bike where I had fabricated a mount I used a little bit of auto filler between one of the gopro tabs to ensure that their power pod always is mounted at the same angle.

I now just view the 8 minute re-calibration window as part of life with the PowerPod, a relatively small inconvenience for being able to move a power meter between bikes multiple.

[Velocomp]

Thanks for your ideas! Now that we have our first-production run behind us we will see if we can tighten-up tolerances a little bit.

I'm finding that with my unit, which I take on and off the bike almost daily, that I get good consistency, as long as I am careful to put the PP back in the same position.

[nicholp1]

How about using a spot of paint or a scribe mark on the mount aligned to a similar mark on the go-pro tab on the case? I think that will be my solution going forward

[John Mac]

Understand all regarding movement in the mount. Ironically, I was having the exact opposite problem before. That is to say that in previous rides the power would be high due to the PP believing I was going upslope. As it settled the power would normalize.

As Requested, here are three pics of the mount on the PP. I don't recall exactly what it looked like out of the box. I can confirm now, that it is all but impossible to tighten the mounting screw down enough to keep the PP from moving fore/aft on the road due to vibration. It seems to be worsening. If I crank it down any tighter it will certainly strip the threads on my mount. The mount on my tandem must be of softer aluminum as I was able to apply some extra torque with a screwdriver to hold it in the proper position.

I've done two more rides, using the info above, since my last post and was able to wedge a very, very small piece of friction tape into the back of the PP mount square side at the top to keep it from moving. It worked but is very impractical to use as a fix. There was some power fluctuation as I rode, but it may have been due to WX. It was a gusty, strong wind ride. Unsure really.

I'll post the other two pics of the PP mounted on the bike separately (3 attachment limit).

Cheers,
John

[John Mac]

Here are the pics of the PP mounted.
R/ John

[Velocomp]

Hmm...it looks like the tabs on your PowerPod have been scraped down. That would have the effect of making the the tabs thinner, making it more difficult to compress the tabs in the mount, etc.

I honestly don't understand what would cause this problem.

[John Mac]

I has always had to screw the bolt in all the way through, like it was slightly misaligned. As far as the tab goes, I agree, I wasn't sure but you confirmed it. Only guess I have is that it has been vibrated pretty well, our wonderful roads around here need some help. Where it's best to ride are some of the worst roads, and our winter in Hampton Rhodes hasn't helped.

[John Mac]

I have addressed this before and have attempted the proposed fix to no avail. This week in a turn of bad weather I resorted to riding my rollers. I turned on the trainer mode mounted the PP and it obviously was not in trainer mode. After re-connecting and turning trainer mode on again, it worked. Two days later, after a couple of rides on the rollers it was time to head out on the road. The night before (last night actually) I connected the PP and turned trainer mode off. Today, I loaded my bike and drove to a friends house to ride and when we headed out it became apparent that the PP was still in indoor mode. During the ride I attempted a hard reset as was suggested before but it didn't work, except for completely reset the date/time in the unit. It continued to function in trainer mode. I tried the hard reset two more times with the same result.
I've currently connected the PP and turned trainer mode off again as well as set the correct date/time but haven't the slightest idea yet if it has taken. Please advise. I like your product, but am frustrated with it currently. I'm currently following a training plan and really can't afford to be set back again and again by an apparent glitch that is impossible to detect until I'm out on the road.
I'm also still having problems with the mount. I have to tighten it with a screwdriver in order for it not to rotate due to road vibration
Please Help...

As Requested, here are three pics of the mount on the PP. I don't recall exactly what it looked like out of the box. I can confirm now, that it is all but impossible to tighten the mounting screw down enough to keep the PP from moving fore/aft on the road due to vibration. It seems to be worsening. If I crank it down any tighter it will certainly strip the threads on my mount. The mount on my tandem must be of softer aluminum as I was able to apply some extra torque with a screwdriver to hold it in the proper position.

I've done two more rides, using the info above, since my last post and was able to wedge a very, very small piece of friction tape into the back of the PP mount square side at the top to keep it from moving. It worked but is very impractical to use as a fix. There was some power fluctuation as I rode, but it may have been due to WX. It was a gusty, strong wind ride. Unsure really.

I'll post the other two pics of the PP mounted on the bike separately (3 attachment limit).

Cheers,
John

[speedracer]

Maybe you can use screw with allen key to mount it instead.
Regarding tolerances. I had problems to mount the PP in the beginning to my combo mount bcs. the holes where not 100% aligned. In the K-EDGE GoPro only mount it was easy to put it and there is plenty of space to let it rotate if it is not properly fixed with screw. So I think it differs from mount to mount how good the PP fits and to work on tolerances does not help too much.