Originally Posted by
fa63
I briefly reviewed the data files posted on iBikes website; where data from iBike, Quarq and PT were overlaid each other. It does appear that iBike produces readings that differ from PT and Quarq for very short intervals (~5 sec), but there doesn't seem to be any problem for longer efforts. 5" power is not super important to me, but 60" power is (I am a big fan of the 1K attack to the finish during our fast group rides; I think it was you who was a big proponent of that in the racing forums so I have been trying to incorporate that into my training) and I don't see a problem based on my brief review.
I will analyze the data further this weekend to see if anything else jumps out.
if you're WR, though, and you put out 1200W for the first 10", that greatly affects the 1' average. the point isn't that the average over a large group is similar, it's that you want to find out if you're the outlier