I completed a criterium race which the CPU (powertap) stated i averaged 255 watts for the 1hr. After downloading the file it stated my NP power for the 1hr was 234 watts. I presume the 255 watts average is pedalling only as obviously there are plenty of 0-20 watts in the race. I think it was 30%.
Would increasing the tyre circumference number have an effect on the CPU reading but not the download figure. I say this because my average for the same race, course last year was 205 average with 234 NP. 50 watt average power difference, same NP.
Would increasing the tyre circumference number have an effect on the CPU reading but not the download figure. I say this because my average for the same race, course last year was 205 average with 234 NP. 50 watt average power difference, same NP.