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Calibration Numbers on Garmin Edge 500
jvandyk 7 months, 4 weeks ago	I have been using a Cinqo for about 2 months now first with an iAero and recently paired with a Garmin Edge 500. In the first few weeks after pairing with the Garmin when I calibrate I received numbers between 24-29 - consistent. This past week I have been seeing values around 4-5, 100-170 and 350 . Based upon the following from the support link; "Strain Gage Strings: The strain gage strings measure rider torque and are required to properly measure power. The best measure of the health of the strain gage strings is the ‘Calibrate’ command. If the Calibrate returns a value in the range of +/- 500, then the strain gage strings are healthy. A CinQo that returns a +/- 32,000 value is permanently damaged and must be replaced." What am I seeing as a calibration value being returned on the Garmin?? At times I see the wattages begin to drop despite the effort level and power reading on a Tacx Flow staying the same. After I stop and pedal backwards 4 revolutions, things seem to come back to normal. Thoughts?? Thanks Jack
Mieke@Quarq 7 months, 4 weeks ago	Hi Jack, The calibration value is actually the zero offset in 1/32 Nm. It's normal for it to vary a bit from day to day, but a change from around 4 or 5 to 350 over a day or two is a bit more than we like to see even though all the values you've seen are still within the normal operating range. Make sure your chainring bolts are all still tightened to 10 Nm if they are steel or 8 Nm if they are alloy. Keep an eye on it for a few days and if it still seems like it is shifting around a fair amount let us know by sending an email directly to us at thinkfast at quarq.us . You did the right thing by backpedaling when you felt your power was off. However, if you find yourself doing that very frequently throughout a ride, let us know because we may want to get the unit back for evaluation. Thanks, Mieke
christophe 6 months, 3 weeks ago	I have had my Cinqo since early December with a Garmin 500. Over time, I've watched the calibration number gradually drift from an initial -300 to just outside -500, where it stayed for a week or two. I corrected it by pulling and cleaning each of the chainring bolts. I then very carefully reinstalled them, first snugging them, then torquing to 10 N.m using the opposing star pattern. The cal value is now coming in at 25. I've also lately seen it taking a very long time to reply in the manual calibration, sometimes up to a full minute. Is this a low battery issue? It's got about 200 hrs on it.

Calibration Numbers on Garmin Edge 500

jvandyk

7 months, 4 weeks ago

I have been using a Cinqo for about 2 months now first with an iAero and recently paired with a Garmin Edge 500. In the first few weeks after pairing with the Garmin when I calibrate I received numbers between 24-29 - consistent. This past week I have been seeing values around 4-5, 100-170 and 350 .

Based upon the following from the support link;

"Strain Gage Strings: The strain gage strings measure rider torque and are required to properly measure power. The best measure of the health of the strain gage strings is the ‘Calibrate’ command. If the Calibrate returns a value in the range of +/- 500, then the strain gage strings are healthy. A CinQo that returns a +/- 32,000 value is permanently damaged and must be replaced."

What am I seeing as a calibration value being returned on the Garmin?? At times I see the wattages begin to drop despite the effort level and power reading on a Tacx Flow staying the same. After I stop and pedal backwards 4 revolutions, things seem to come back to normal.

Thoughts??

Thanks

Jack

Mieke@Quarq

7 months, 4 weeks ago

Hi Jack,

The calibration value is actually the zero offset in 1/32 Nm. It's normal for it to vary a bit from day to day, but a change from around 4 or 5 to 350 over a day or two is a bit more than we like to see even though all the values you've seen are still within the normal operating range.

Make sure your chainring bolts are all still tightened to 10 Nm if they are steel or 8 Nm if they are alloy.

Keep an eye on it for a few days and if it still seems like it is shifting around a fair amount let us know by sending an email directly to us at thinkfast at quarq.us .

You did the right thing by backpedaling when you felt your power was off. However, if you find yourself doing that very frequently throughout a ride, let us know because we may want to get the unit back for evaluation.

Thanks, Mieke

christophe

6 months, 3 weeks ago

I have had my Cinqo since early December with a Garmin 500. Over time, I've watched the calibration number gradually drift from an initial -300 to just outside -500, where it stayed for a week or two. I corrected it by pulling and cleaning each of the chainring bolts. I then very carefully reinstalled them, first snugging them, then torquing to 10 N.m using the opposing star pattern. The cal value is now coming in at 25.

I've also lately seen it taking a very long time to reply in the manual calibration, sometimes up to a full minute. Is this a low battery issue? It's got about 200 hrs on it.

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