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Anyone use multiple bike computers/hrm (Polar 725x)

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Anyone use multiple bike computers/hrm (Polar 725x)

Old 03-08-07, 07:23 AM
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fore0121
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Anyone use multiple bike computers/hrm (Polar 725x)

Looking into getting a Polar 725x for HR training but the only thing bugging me is the lack of AutoStart/Stop. I already have a nice wireless SigmaSport 1606L with cadence but I would like the Polar to actually replace the Sigma. Adding the Polar would mean adding another speed sensor on the front fork in order to get proper data collection for the Polar (Distance, Averages, etc.), which I'm thinking is a bit of overkill.

Anyone use both, or if you only use the Polar 725x are there issues with the lack of Autostart? How does it affect averages, etc.

I have looked at the new Polar CS600, but I do want something portable as some of my riding is done indoors with spinning classes due to time constraints (damn work!) and I'm thinking the 725x is the way to go. Are there any others that might fit the bill? I'm always open to looking at the latest and greatest!

Thx.
f
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Old 03-08-07, 01:07 PM
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Anyone? Anything?
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Old 03-08-07, 02:22 PM
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Get the CS600 and get a extra mount. Take the mount with you to your spin class and use a zipp tie to mount it on the bike. You'll be much happier with the CS600 with the auto start/stop. Also the CS600 will record down to 1 second intervals while the 725x is 5 second. I have a 725x and a Ergobrain with no problems. The only thing about the 725x is sometimes when I stop I forget to restart the watch, I think they call it old age.
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Old 03-08-07, 08:19 PM
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Originally Posted by fore0121
Looking into getting a Polar 725x for HR training but the only thing bugging me is the lack of AutoStart/Stop. I already have a nice wireless SigmaSport 1606L with cadence but I would like the Polar to actually replace the Sigma. Adding the Polar would mean adding another speed sensor on the front fork in order to get proper data collection for the Polar (Distance, Averages, etc.), which I'm thinking is a bit of overkill.

Anyone use both, or if you only use the Polar 725x are there issues with the lack of Autostart? How does it affect averages, etc.

I have looked at the new Polar CS600, but I do want something portable as some of my riding is done indoors with spinning classes due to time constraints (damn work!) and I'm thinking the 725x is the way to go. Are there any others that might fit the bill? I'm always open to looking at the latest and greatest!

Thx.
f
The polars do have to be turned on initially, but then they do auto start/stop while you're riding. At least my 720 does. And you get to download all the data, so you can do a lot with it.

My guess is that they don't do autostart because monitoring the wireless signals from the sensors takes battery power and the watch would run down much faster. Just a guess.
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Old 03-09-07, 12:43 AM
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The 720's have the auto start/stop feature the 725 does not. I talked to Polar about the 725 not having auto start/stop and the reason it doesn't is because it was designed as a runners HRM first. The early 720's had both ascent and auto start/stop. In the later 720's they took the ascent out. So you were left with buying the 720 without ascent but it had auto start/stop or the 725 without auto start/stop but it had ascent. I don't understand why they could have left both features in one HRM.
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Old 03-09-07, 07:56 AM
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Originally Posted by DanteB
I don't understand why they could have left both features in one HRM.
Because now it means you have to buy more stuff.

Thanks for the input guys. I was actually thinking of seeing if I could find a 720i somewhere. I know Polar isn't making them anymore but I'm sure someone has some NOS somewhere.

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Old 03-09-07, 08:43 AM
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I have both a 710 and 725 and auto/start is the one feature that I like.. I would say find a 710 or 720 if that is an important feature.. My 710 has been working strong for over 5 years. Just had to change the battery for the 2nd time in 5 years.. I found some 720's on ebay, decent price..

https://cgi.ebay.com/2007-Polar-S720I...QQcmdZViewItem

Performance has them at 299.00.. https://www.performancebike.com/shop/...tegory_ID=4115
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Old 03-09-07, 08:46 AM
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I used to use two computers; one for my Powertap, and the one I had already had with the sensor on the front wheel. Then I could have one computer on total time and instantaneous speed, and the powertap on cadence, average speed, and power output. I liked it for a while, but eventually removed the superfluous computer.
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Old 03-09-07, 09:34 AM
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I was using two computers, the Flite Deck, and then added a Polar 625 (same guts as the 725, but packaged for runners). I like the 625 because I hooked it up to the Polar power sensor. The 725/625 and the power sensor runs about $700 for both instead of $900 for a PT. Auto start/stop, which was on the Flite Deck would be nice, but not necessary, since the 625 continues to measure only HR, not distance, since, of course, I stopped. You can always manually stop and restart the 625 as well.
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Old 03-09-07, 10:02 AM
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Definitely keep an eye out for the 720i. I love mine, it handles two bikes, and has auto start/stop--after you initially start it. That actually isn't too bad a feature--I can only capture the miles I want, as opposed to putzing around the driveway or parking lot before i get to where I might measure a timed loop. The manual start, auto start/stop in other words, is really useful for precise lap work.
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Old 03-09-07, 10:18 AM
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I've got five bikes (7, including the totally crap ones), and I use the same Cateye computer 'head' on all of them, so with my 725x I just use most functions, but not the speedometer
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Old 03-09-07, 12:05 PM
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I use a 725 and a Cateye.
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Old 03-09-07, 03:50 PM
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when i had my polar 720i.... i only used that.... no need for anything else!

with my edge.... i have a cheap wired cateye for back up.... to at least give me miles at the end of a ride... (yes... i've had a couple of catostrophic failures with my edge on big, important rides!)
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Old 03-09-07, 03:53 PM
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Since you have 1606, just get the Sigma PC-15.
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Old 03-09-07, 03:57 PM
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Originally Posted by fore0121
Looking into getting a Polar 725x for HR training but the only thing bugging me is the lack of AutoStart/Stop. I already have a nice wireless Sigma Sport 1606L with cadence but I would like the Polar to actually replace the Sigma.
f
I see you must be on a Cervelo? I just installed a 1606 on my Cervelo sl fork and the rubber O rings just do not seem to keep the sensors in place very well, its easy to bump them around.
Do you find this or is there a way to use zip ties in place of the rubber O rings?
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Old 03-09-07, 06:02 PM
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Just cut out the stops when you download and review the ride. That way you won't forget to restart.
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Old 03-09-07, 09:45 PM
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Originally Posted by richphoto
I see you must be on a Cervelo? I just installed a 1606 on my Cervelo sl fork and the rubber O rings just do not seem to keep the sensors in place very well, its easy to bump them around.
Do you find this or is there a way to use zip ties in place of the rubber O rings?
You know, I really haven't had an issue with the speed sensor slipping/moving. I have the Easton SL90 fork though, not the Wolf (I'm assuming that's what you meant by the 'cervelo' fork).
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