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Parameters for Polar S725x power meter

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Parameters for Polar S725x power meter

Old 08-06-06, 11:40 AM
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pecos
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Bikes: Specialized Tarmac S-Works

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Parameters for Polar S725x power meter

Does anyone know the actual values for the following regarding Shimano DuraAce 10 speed chain:

a) Chain weight in grams
b) Chain length in millimeters (per link)
c) Wheel circumference (the length of the outer wheel if it were laid out flat) I measured 2,120 mm on a 700x23 setup.

As an aside, lazy question, how many links tipically on a size 55 bike? I ride a Specialized Tarmac.
One problem I'm having is that the readings stop after a while, they go back to 0 on my power meter, can't tell why, I have to unplug the wire going into the wrist unit to get the readings to come back on. Battery is fairly new. Anyone had this kind of problem and solved it? I've sent the unit twice already to the manufacturer. Thanks for any help.
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