Giant Power Pro
Moderator: robbosmans
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Somebody is selling his online because the crank arms don't fit him, it's a take off from a new Giant. That's why I'm asking. Any idea?
I do have a Defy Advanced Pro 0 2019 and I have the same question. I just can't get along with the 50t for our terrain.
I have read the Pioneer procedure for chainring change and this should be similar, but it looks like the Giant right side is different and more alike a Stages with the strain gage on the crank arm itself and the electronics on the housing in the rings. I don't see an obvious adapter plate on the rings themselves but I could be wrong.
I'm just too lazy to take off the crank, but I'll try to post a couple pictures.
If anyone has any more info, that would be great.
Other than that, it's working as it should except I had to delete all my previous power meters on the Garmin unit but after that, it's been smooth sailing.
This is how the Giant Power Pro looks like.
Now, I don't have a clue about how to change the rings but looks like it is bonded to the spider and probably you just need to undo the two bolts to replace the outer ring. The inner ring looks like even easier than that.
Thoughts?
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Now, I don't have a clue about how to change the rings but looks like it is bonded to the spider and probably you just need to undo the two bolts to replace the outer ring. The inner ring looks like even easier than that.
Thoughts?
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Wow. That helps a lot! Thanks. Any idea of torque? Does it matter as it's only for the pod, not the strain gauge?damond wrote:Yes, you just remove those 2 bolts and the Pod will get loose. Then you just swap the rings like you would normally do. as simple as that!
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Based on the image below, seems like one first removes the crank from the frame, then simply remove all 4-chainring bolts the same as a standard Shimano FC-8000/9100 crank, then carefully manuever the large chainring clear of the pod.
Last edited by ms6073 on Tue Jun 18, 2019 2:38 pm, edited 1 time in total.
- Michael
"People should stop expecting normal from me... seriously, we all know it's never going to happen"
"People should stop expecting normal from me... seriously, we all know it's never going to happen"
Ah, yes, the image below makes it clear how the tight clearances with the 'pod' prevents the large chainring from moving.
- Michael
"People should stop expecting normal from me... seriously, we all know it's never going to happen"
"People should stop expecting normal from me... seriously, we all know it's never going to happen"
My Power Pro's battery keeps draining to flat after ~300 miles or a couple of weeks of idle time. It's supposed to last far longer than this. I bought the bike about two months ago and the problem has occured since I got the bike.
Believing this to be a firmware issue, I've tried several times to update the firmware. Frustratingly, the Giant app needed for this process has proven to be extremely unreliable on my Galaxy S10. After some struggles and a recent update to the app, I've been able to update the firmware on one side. This process was hardly easy, it took multiple tries. The firmware update process continually fails on the left side, leaving me with two different versions of the firmware (!). The battery continues to drain far faster than it should.
I'm going to have the shop call Giant and figure out what to do. The meter seems to read fairly accurately, it seems like a good piece of equipment despite this problem. Information on this power meter is exteremly sparse on the internet, I thought I'd post something here.
Believing this to be a firmware issue, I've tried several times to update the firmware. Frustratingly, the Giant app needed for this process has proven to be extremely unreliable on my Galaxy S10. After some struggles and a recent update to the app, I've been able to update the firmware on one side. This process was hardly easy, it took multiple tries. The firmware update process continually fails on the left side, leaving me with two different versions of the firmware (!). The battery continues to drain far faster than it should.
I'm going to have the shop call Giant and figure out what to do. The meter seems to read fairly accurately, it seems like a good piece of equipment despite this problem. Information on this power meter is exteremly sparse on the internet, I thought I'd post something here.
Same issue here. Doesn't bother me much as the batteries are rechargeable and they last for the duration of my typical ride. I wish it was better, though as there is no comparison with my Di2
I haven't had issues with my S10 trying to update the firmware or running the Giant app.hiro11 wrote: ↑Sun Jun 16, 2019 11:41 pmBelieving this to be a firmware issue, I've tried several times to update the firmware. Frustratingly, the Giant app needed for this process has proven to be extremely unreliable on my Galaxy S10. After some struggles and a recent update to the app, I've been able to update the firmware on one side. This process was hardly easy, it took multiple tries. The firmware update process continually fails on the left side, leaving me with two different versions of the firmware (!). The battery continues to drain far faster than it should.
Now, this is where I started to have issues.hiro11 wrote: ↑Sun Jun 16, 2019 11:41 pmI'm going to have the shop call Giant and figure out what to do. The meter seems to read fairly accurately, it seems like a good piece of equipment despite this problem. Information on this power meter is exteremly sparse on the internet, I thought I'd post something here.
I ran a test by riding on my Kickr at the same time than my Power Pro. Actually, the Kickr was reading cadence from the Power Pro as there is no other cadence sensor on my bike. I did a ride in ERG mode (BLE on the Kickr), while recording the same ride on my Garmin (ANT+).
While riding, and corroborated from the data, the cadence was jumping up and down every second. I don't change cadence that quickly. As the Power Pro uses cadence into the calculation for power, the data came very jumpy. The power plot from the kickr showed a steady power for the duration of the interval, while on the Power Pro it looked like if I was riding outside. At about 100w, the Power Pro would read within 5w but at 200W it would be as far off as 20w.
Now, the average power came within 10w (out of 150w is still significant) from that of the Kickr and I could live with that, but being 20% of while busting my lungs is dodgy.
I need to do more testing and see how it goes. It was reading pretty good to me, but after a firmware update, the cadence data jumps up and down and I'm having issues with Power. However, I have not made a calibration lately of the Power Pro or a Spin Down on the Kickr... so I still need to find out more.
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