Polar s720i question

IanD wrote:
:: All,
::
:: Just purchased a Polar s720i and got everything
:: installed. Checked for the emitting lights on both the
:: speed and cadence. After pressing the red start button
:: and acquiring a heartbeat. Once riding however, I just do
:: not recieve any changes to speed/cadence and such. They
:: just keep showing 00. I've got the bike/cadence function
:: turned on and have defined both bike 1 and bike 2. What
:: else could I be doing wrong ?
::

Did you check the distance between the speed/cadance
sensors and the watch? there is a limit...are you using the
bike mount?

::
:: Thanks,
::
:: Ian

IanD said:

Just purchased a Polar s720i and got everything installed.
Checked for the emitting lights on both the speed and
cadence. After pressing the red start button and acquiring
a heartbeat. Once riding however, I just do not recieve
any changes to speed/cadence and such. They just keep
showing 00. I've got the bike/cadence function turned on
and have defined both bike 1 and bike 2. What else could I
be doing wrong ?

You have to press the red button twice. The first press puts
it in "measure mode", where it acquires the heart rate. Once
it has found a heart rate, the second press starts the
stopwatch and begins recording speed/cadence.

Alternately, you can set autostop/start on. This will
start and stop the stopwatch automatically with movement
of the bike.
--
terry morse Palo Alto, CA bike.terrymorse.combike.terrymorse.comOpen ↗

IanD said:

All,

Just purchased a Polar s720i and got everything installed.
Checked for the emitting lights on both the speed and
cadence. After pressing the red start button and acquiring
a heartbeat. Once riding however, I just do not recieve
any changes to speed/cadence and such. They just keep
showing 00. I've got the bike/cadence function turned on
and have defined both bike 1 and bike 2. What else could I
be doing wrong ?

Thanks,

Ian

Did you select bike 1 or bike 2? There is a 'no bike' mode.
In that mode speed and cadence is not displayed/recorded.

Lou

Quoted message said:

Just purchased a Polar s720i and got everything
installed. Checked

for

Quoted message said:

the emitting lights on both the speed and cadence. After
pressing

the

Quoted message said:

red start button and acquiring a heartbeat. Once riding
however, I just do not recieve any changes to
speed/cadence and such. They just keep showing 00. I've
got the bike/cadence function turned on and

have

Quoted message said:

defined both bike 1 and bike 2. What else could I be
doing wrong ?

The red light only indicates that the sensor picks up the
wheel- or crankmagnet, it's not an indication that the watch
receives data from the sensor. The distance between watch
and sensor is propably too big, or the sensors are placed in
such a way that too many parts of the bike are between watch
and sensor. It's possible to increase the sending power of a
sensor by changing the jumper setting inside the sensor, i
think it's default in the low position for the speed sensor
and medium position for cadence.

"IanD" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

All,

Just purchased a Polar s720i and got everything
installed. Checked

for

Quoted message said:

the emitting lights on both the speed and cadence. After
pressing

the

Quoted message said:

red start button and acquiring a heartbeat. Once riding
however, I just do not recieve any changes to
speed/cadence and such. They just keep showing 00. I've
got the bike/cadence function turned on and

have

Quoted message said:

defined both bike 1 and bike 2. What else could I be
doing wrong ?

Thanks,

Ian

An update for all...

1) I've measured all distances applicable (magnet to
reciever, recieved to hrm the supplied bike mount) and
all measurements are within the specified limits

2) I've got the speed sensor directly under the brakes, as
close as possible to the hrm location. I've got the
cadence sensor on the non-drive side down tube directly
below the my Tacx water bottle mounts.

3) I've defined bike 1 & bike 2 and have selected bike 1.

4) I'm pretty sure I set the autostart feature 'ON' but I
will check again.

I will try again when I get home - thanks for all your
help everyone!

Ian

Quoted message said:

2) I've got the speed sensor directly under the brakes, as
close as possible to the hrm location. I've got the
cadence sensor on the non-drive side down tube directly
below the my Tacx water bottle mounts.

If it's too close to the brake it could be the brake is
obstructing the signal. Maybe test first with the watch near
the sensor while spinning the wheel and work from there.

"IanD" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

An update for all...

1) I've measured all distances applicable (magnet to
reciever, recieved to hrm the supplied bike mount) and
all measurements are within the specified limits

2) I've got the speed sensor directly under the brakes, as
close as possible to the hrm location. I've got the
cadence sensor on the non-drive side down tube directly
below the my Tacx water bottle mounts.

3) I've defined bike 1 & bike 2 and have selected bike 1.

4) I'm pretty sure I set the autostart feature 'ON' but I
will check again.

I will try again when I get home - thanks for all
your help

everyone!

Quoted message said:

Ian

I've been using a 710 now for almost 2 years, and some
positioning experience from my 2 bikes (I move the computer
from one bike to the other, and each bike has it's own set
of speed/cadence sensors)....

- The bike mount for the computer is just to the right
of my stem.

- The speed sensor is on the right side of the fork,
pointing forward from the fork, about 4 inches down from
the crown (some frame materials like Ti could obstruct
signal, as could all of the cables and brake HW).

- Cadence sensor is on the downtube, also pointed toward the
rear, on the "left side", with the magnet about 2.5 inches
from the end of the left crank. It juts out a bit from the
frame, but it does not get in the way of anything, and I
noticed to get a good reading on the cadence, the sensor
has to be really close to the crank magnet. (basically,
make sure the lettering on the sensors is on the
"outside", away from the frame side...)

As other posters have said, the light just indicates the
sensor is picking up the magnet passing by.

You need to see if you have autostart on, and if so, when it
starts picking up the speed sensor, it will kick on the
ride/stopwatch timer. Note that the cadence sensor will not
start the timers (at least on the 710, not sure about the
720). Otherwise you need to hit the big red button a second
time, to start the timers.

My best suggestion for you is to just play with it on the
work stand and spin the wheel after you see the lights,
perhaps even without the computer mounted (holding it near
the handlebar, for example), to see if you can get a speed
reading. (Also, did you set your wheel measurements?)

I also noticed that if I moved the computer to the left
side of the stem, I don't get as good signal reception. Not
quite sure why this would be, but on the right side of the
stem, I have no complaints. Maybe it's because I'm right
handed? <grin>

Hope this helps....

Dave

"IanD" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

An update for all...

1) I've measured all distances applicable (magnet to
reciever, recieved to hrm the supplied bike mount) and
all measurements are within the specified limits

2) I've got the speed sensor directly under the brakes, as
close as possible to the hrm location. I've got the
cadence sensor on the non-drive side down tube directly
below the my Tacx water bottle mounts.

3) I've defined bike 1 & bike 2 and have selected bike 1.

4) I'm pretty sure I set the autostart feature 'ON' but I
will check again.

I will try again when I get home - thanks for all your
help everyone!

Ian

All,

Just wanted to let you know I figured out what the problem
was - I had turned on the Power feature effectively turning
off cadence/speed. Maybe sometime I'll read the damn manual.

Thanks all!