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Compatibility of Polar Speed & Cadence Sensors

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Compatibility of Polar Speed & Cadence Sensors

Old 08-04-06, 06:57 PM
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itri-45
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Compatibility of Polar Speed & Cadence Sensors

I currently have a Polar cyclocomputer CS200cad on my bike and am thinking about getting a Polar S720i wrist watch. Does anyone know if the S720i can read the speed and cadence data from the CS200cad sensors?
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Old 08-04-06, 07:12 PM
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They dont use the same sensor so I would say no. I had a heck of a time finding the correct cadence sensor for the CS200.
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Old 08-04-06, 07:40 PM
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The 720 comes with a speed sensor. The cadence sensor will run you about $40.
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Old 08-04-06, 08:53 PM
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Yeah, the CS series and the S series, for whatever reason, use a different sensor.

Have you looked at the cs300? Seems like a pretty nice wrist-mount model that might save you the trouble of installing new sensors...
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Old 08-05-06, 07:12 AM
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Originally Posted by DrPete
Yeah, the CS series and the S series, for whatever reason, use a different sensor.

Have you looked at the cs300? Seems like a pretty nice wrist-mount model that might save you the trouble of installing new sensors...
Yes and I actually prefer the look of the CS300, but the S720i has other training conditions to supplement my CS200 like temperature, altitude and ascent data.
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Old 08-05-06, 07:27 AM
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Originally Posted by Lhduc
Yes and I actually prefer the look of the CS300, but the S720i has other training conditions to supplement my CS200 like temperature, altitude and ascent data.
Good point. I hadn't noticed that... I was looking for a wrist-mount unit to use this winter when I cross train, and now I'm conflicted.
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Old 08-05-06, 07:29 AM
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Originally Posted by JayC
They dont use the same sensor so I would say no. I had a heck of a time finding the correct cadence sensor for the CS200.
Really? I just went down to Performance and bought a cadence sensor for my CS200 for $29.99. I have a CS100 on my LeMond and bought one for it too. No problems at all. You just have to turn that function on in the display unit.

I don't know how or if this works with the watch though. A friend of mine had a Polar watch and he had all sorts of trouble with it on his bike. The only thing that worked well was the HR monitor.
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Old 08-05-06, 09:18 AM
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The watch uses a different sensor.

Watch Sensor S Series
CS Series Sensor

I ended up having to go to another Performance about 45 minutes away to get the correct sensor and they only had 1 of them in stock.
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Old 08-05-06, 10:19 AM
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Originally Posted by SDRider
Really? I just went down to Performance and bought a cadence sensor for my CS200 for $29.99. I have a CS100 on my LeMond and bought one for it too. No problems at all. You just have to turn that function on in the display unit.

I don't know how or if this works with the watch though. A friend of mine had a Polar watch and he had all sorts of trouble with it on his bike. The only thing that worked well was the HR monitor.
JayC is right. Not only the S-series and CS-series sensors are different, they are not compatible as stated in the spec.
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Old 08-05-06, 09:24 PM
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I had CS200Cad. The main chip was dead. I bought new 725X but was too lazy to replace the sensor. Guess what. It did work fine with both cadance and speed sensors.
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Old 08-05-06, 10:24 PM
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Originally Posted by cyberpop
I had CS200Cad. The main chip was dead. I bought new 725X but was too lazy to replace the sensor. Guess what. It did work fine with both cadance and speed sensors.
Interesting.. I was in Performance today looking at the sensors and they obviously are different. I wonder why they bothered to make a different sensor if they interchange.
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Old 08-06-06, 06:25 AM
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Originally Posted by cyberpop
I had CS200Cad. The main chip was dead. I bought new 725X but was too lazy to replace the sensor. Guess what. It did work fine with both cadance and speed sensors.
Thanks, that's great to hear. Now I wonder if the 720i will work with the CS sensors. I really prefer the 720i over the 725x because of auto start/stop.
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Old 08-06-06, 05:39 PM
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Originally Posted by cyberpop
I had CS200Cad. The main chip was dead. I bought new 725X but was too lazy to replace the sensor. Guess what. It did work fine with both cadance and speed sensors.

How did you know the cip was dead? my CS200Cad hasn't worked right since I mounted it. Despite taking it back and exchanging it's parts.
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