I'd have to review Garmin's release notes but I seem to recall some mention of power sensor issues on versions prior to 2.8

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Jesse Bartholomew

Sorry for the inconvenience. Another option (depending where you're located) would be to drop the PowerTap off at a shop and have them call us. We're equally happy to work through a shop as we are directly with our customers.

If that doesn't work I'm sure we can have a Technical rep. rearrange a schedule to stay a little late or come in early to chat with you.

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Jesse Bartholomew

If your hub is a few months old and you haven't updated firmware it would be a good idea to do so. Should fix this.

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Jesse Bartholomew

You need the shim kit.

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Jesse Bartholomew

What firmware version is displayed in the bottom right corner of the PowerTap head unit when you first turn it on? Should be 6.60 or 7.60

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Jesse Bartholomew

Try a new battery, the CR2032 is a poor performer in the cold, especially if it is on the old side....Maxell brand CR2032's seem to have some special properties that make them a bit more stable so you could try those for cold temps. They're difficult for us to source in bulk compared to the Energizer we use so we can't use them in production.

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Jesse Bartholomew

Jesse-

Is there any plan to allow the G3 firmware to be updated by a Mac? It seems pretty ridiculous that the feature is there in the software, but doesn't work.

It says 5.33, does that mean I need to update the firmware? And how would I go about doing that, I don't have a cable, is there one available for these units or do I need an ANT+ usb stick?

Thanks I should be sending in soon then ;0)

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__________________________________________________
Official Polar Ambassador
http://www.google.com/...P7RiWyEVwpunlsc2JtQQ

5.33 is outdated and should be updated but wouldn't prevent you from pairing. You can get the download/upload cable here:

http://www.powertap.com/.../usb-download-cradle

Just to make sure, you might want to review this "how to" video on pairing since the process can be a little confusing:

http://www.youtube.com/watch?v=dD6ySxwh9YI

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Jesse Bartholomew

Unfortunately I have tried that "learn" protocol several times. My timex global picks up the hub with no issues, but the head unit 2.4 does not learn the hub.

Worked like a charm. I updated the firmware to the latest and greatest. Now power is display correctly. Thanks!

Sorry, I was wrong. You will need to update the head unit firmware.

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Jesse Bartholomew

Could I use an ANT+ stick or do I specifically need that cable?

Thanks for all of your help!

Hi there,

Just installed PowerAgent 7.5.8.43 and I used to be able to merge activities straight after download, but this capability seems to have been removed. You only see a Save or Close button in the Saving Power Data window after downloading the activity. I use a LYC and wondering if there is any way to get this Merge activity enabled ? Is there a setting that can be done in the Preferences ?

thanks,
/derek

Thanks a bunch. It never occurred to my small mind that I can just take the wheel with me to work and there's no need to take my whole bike. I called during a break and got it working. AWESOME customer service. Appreciate it.

Hey Jesse,

I am using a wired powertap-carbon cut outs. Have been happy for the most part, except for the cpu's-lyc. I was in the USA, now I live in Ireland. I have been through 5 cpus , almost one each year, the previous lyc's would start to miss pieces of the lcd, so I would replace. The current one, started to fade, but then would be fine when I removed and re-inserted the battery, while this was a pain in the ass and meant I had to reset the ride data date when I downloaded it, it was do-able. Now when i use the cradle to download, it is downloading nothing, not getting any data. The data is on the cpu and is taking data during the spin.
The firmware is 4.07. do I need to purchase yet another cpu? thanks in advance,
Patrick Clifford.

Jesse,

I have had on and off issues getting one of my 3 g3 power taps to return a calibration value to any of my four garmins. The other 2 work flawlessly.

My last troubleshooting escapade has led me to believe, if I lightly tighten the securing nut to the tube it seems to work, if tighten it harder even with bare hands it does not return a calibration value, but syncs and reports power fine. I am not a gorilla, like many triathletes I need my wife to open food jars.. So it is not a rediculous torque.

Any merrit to this or any other ideas why I don't a return cal value?assuming current FW with both devices and good battery?

will do, took the new unit for a the first run tonight, only 30 min or so, but kept the G3 running on my 910xt.

there were a few differences which I expected, ( such as peak power ) but the readings between the two units were well within expected margin of error ( 2w difference on the power averages NP,AP and 20min max ) and only tiny differences on TSS and IF which I put down to a 50w difference in the peak power figure ( short rides would magnify this effect. )

half of me is glad that in spite of teh G3 returning a zero offset of 492, the data seems to be usable, the other half of me wishes i could have verified the data without dropping a wedge of cash to find out.

live and learn :P no regrets though.


edit: am using Q-rings as well, so was interested to see how that affected the readings between the two different units. not a big enough data set to evaluate it yet however.

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I reject your reality and substitute my own!
Adam Savage

I've purchased the connector cable for my power tap hub head unit 2.4. When I plug it into the USB and turn it on, it displays "Host". However I cannot find it on my Mac. I've downloaded the power agent software and when I select transfer, it says "Cannot find supported device". I'm stumped on how to get this head unit to function?

Thanks

Thanks Jesse.

But 535 is out of range (unused hub) , What should I do?

Jesse,

I'm having an issue with the heart rate zones in Power Agent. I did a 20 minute interval where my HR went from 145 to 175 increasing steadily. The information is shown correctly on the graphs. However, the HR Zone Tab does not display the data properly. It reads 93.7% (18:44) at 174-250 bpm. Is there a fix for this?

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The LYC has been around for a while. We stopped actively developing and supporting it around 2008. It was developed in 1998. That's not an excuse for needing a new one every year but from the usual (make sure you've cleared, all the data off and make sure you've got a fresh battery) it might be time to upgrade to a Joule. You can give us a call to discuss options but since you're in Ireland we may need to use our local distributor.

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Jesse Bartholomew

There are mechanical stops on the power cap so tightening more or less really doesn't change much in the way of any connections so I don't think that's the issue.

When you say it doesn't return a calibration value you mean there is no data at all that comes back when you send the calibration command from the Garmin? Does the Garmin report a calibration message (success or fail)?

Assuming firmware is up to date on all devices the only other thing that comes to mind immediately are the challenges dealing with multiple power meters with the Garmin. The Garmin likes to swap around a little bit. Keep in mind the PowerTap, especially G3, has a broadcast range of at least 20 feet and does a good job getting around corners etc. Point being are you 100% sure you're connected to the intended sensor?

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Jesse Bartholomew

The old 2.4 units and USB cradle are infamously finicky in regards to connection between the head unit and the cradle. Give it an extra push until you hear a click. (It will say host without being fully connected).

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Jesse Bartholomew