power way off

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chance17
Posts: 15
Joined: Tue Sep 27, 2016 6:56 pm

power way off

Post by chance17 »

Ive attached my ride which goes in loop 3 times 5 miles each time.
1st-everytime I start a ride it does the 8 min numbers way off thing.Position is solid.Exact same spot.In fact didn't move from last ride.Ive calibrated this thing numerous times.Its only used on 1 bike.Im riding alone, no drafting, air inlet is as level as can be on PP.

2nd-power is off, most notably way off on down hill grades.I noticed on a down hill today power shot up from 200 to 900 with no pressure on pedals, just spinning the pedals with no pressure applied to chain.This goes for every down hill.I also notice on wind graph it only ever shows a headwind, never ever a tail wind.Im going in loops so there should be a tail wind at some point.So I am assuming the entire ride is probably off in power throughout.
Attachments
iBike_10_05_2016_1213_15_Miles.ibr
(218.13 KiB) Downloaded 240 times
Velocomp
Velocomp CEO
Posts: 7982
Joined: Fri Jan 11, 2008 8:43 am

Re: power way off

Post by Velocomp »

Your power is off for two reasons:

1) During the first 8 minutes PP is readjusting itself. It is a HUGE correction it is making, much more so than would be normal from a good calibration ride

2) Your wind scaling is way too high, causing the consistent headwind you see, high watts, and watts on the downhill

Please post a photo of your PowerPod attached to its mount, side view, so I can see the angle at which it is mounted.

We can fix you up pretty easily, but before proceeding I'd like to see the photo, so I can give you next steps
John Hamann
chance17
Posts: 15
Joined: Tue Sep 27, 2016 6:56 pm

Re: power way off

Post by chance17 »

Heres a picture...Powepod label on side isnt parallel with ground but air inlet is.


https://www.dropbox.com/sc/qyf8l60fin13 ... AzwNFjsBQa
Velocomp
Velocomp CEO
Posts: 7982
Joined: Fri Jan 11, 2008 8:43 am

Re: power way off

Post by Velocomp »

Album is empty...
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Screen Shot 2016-10-05 at 8.06.15 PM.png
Screen Shot 2016-10-05 at 8.06.15 PM.png (531.8 KiB) Viewed 4274 times
John Hamann
chance17
Posts: 15
Joined: Tue Sep 27, 2016 6:56 pm

Re: power way off

Post by chance17 »

Oops I deleted it by accident..Heres another

https://www.dropbox.com/sc/7lyhbtzzkve3 ... iE7UZ_ElDa
Velocomp
Velocomp CEO
Posts: 7982
Joined: Fri Jan 11, 2008 8:43 am

Re: power way off

Post by Velocomp »

Aha! As suspected...your PowerPod is pointed way too high in the air.

The word "PowerPod" should be approximately level. When pointed so high towards the heavens you'll get weird readings.

Reposition your PP as recommended, ride for 8 minutes, then post another ride file. You should have much better results.
John Hamann
chance17
Posts: 15
Joined: Tue Sep 27, 2016 6:56 pm

Re: power way off

Post by chance17 »

I did another ride today.Seems much better but had to move it even further down half way so the ride was a little messed up.Ill go for another ride tomorrow and hopefully it will be correct start to finish.Ill post that ride
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