Quarq D ZERO vs PT G3 vs P1
It’s also a shame that he never includes an SRM crankset
in his comparisons to validate other sensors like pedals for example. I tested my P1s
like this and was able to use it to then test Rotor 2Inpower and Power2max NG.
SRM vs P1
All these comparisons show that the accuracy of the sensors Sensor measurement seems to be improving with the release of the latest models. This is good news and
everyone will choose according to their level of requirement and their budget. Dc Rainmaker seems satisfied when the sensor is at +/- 2%. For my part
Depending on the customers I like to be able to rely on exact figures
When Sensor measurement a
rider tests himself to quantify a progression of the season, it is always
regrettable to have a skewed test because the sensor was on
the low tolerance that day and we will have attributed the bad result to a
day of poor form…
To finish with the accuracy of the sensors and to repeat
the slogan ‘when every watt counts’, I always recommend SRM for training to the watt ready. For this
article I again did a comparative test on my reference special lead climb on a
windless day, stable temperature at 20 degrees and controlling the
climbing weight. 11’46 for 264.2 watts avg vs 11’43 for 265.3 watts avg. The 3s gained in the second
climb are indeed due to 1 watt more and 200 g less dehydration (do
not take into account the km and speed given by the GPS in the forest).
Almost identical climbs
Last point when changing sensors, how can you be sure that the new sensor delivers the same measurement as the old one? The first study analyzed it and we can notice a fairly large dispersion from one sensor to another from the same supplier. Even at SRM, it seems fluctuating. Tour int and its comparative test were also able to observe this between the 2 Verve models.
Only SRM currently allows you to check the accuracy of your wordpress automatically compresses images sensor yourself by hanging standard weights on the cranks and, if necessary, correct its internal calculation (the slope). It will then be possible to modify the watt-by-watt measurement (unique) and find your bearings. It is possible on other sensors to see deviations but nothing can modify the calculation of watts precisely. That said, for systems with strain gauges on the betting email list cranks or pedals, it will be possible to modify the display by playing on the crank length. B
y entering, for example, 172.5 mm instead of 170 mm, the sensor will be wrong by 1.5%, or 4.5 w at 300 w, this can allow you to get closer to your old values but not to the watt ready again.
In conclusion, the choice of a sensor depends on many parameters. Accuracy, price, reliability, quality of after-sales service… Everyone will have priorities regarding all of these and will choose accordingly. If we only talk about accuracy, the primary theme of this article, SRM stands out in all the tests.