Did my first ride with the power system of Polar this week-end, just to check if I had put it correclty on the bike, and it seemed to work fine on the small chain front ring, giving outputs of around 200 watts (against wind on the flat), but when shifting to the big front chain ring, then the power output dropped to about 140 watts, which is not what one would expect.
Any explanation for this, did I do something wrong when installing the whole thing ?
Thanks a lot for your explanations.
P.S. The bike shop that helped me installing it was doing this for the first time too.
Any explanation for this, did I do something wrong when installing the whole thing ?
Thanks a lot for your explanations.
P.S. The bike shop that helped me installing it was doing this for the first time too.