Comparison test:
…and…
 
This weekend I wrote about the first ride PowerCal (see here).

Now, I have more data about these rides.
I did 4 rides of varying distances, on two different bikes, each with different profiles, and I compared the power readings by capturing them on two separate Garmin units pictured above.
On this weekend’s post, I made a numerical comparison between the rides, by comparing the power average, normalized power and TSS calculation… This time, I’m focusing on pattern comparison.
The objective was to identify the power pattern exhibited by PowerCal and …

UPDATE: There is a new post on PowerCal vs PowerTap comparisons.
…and…
About a year ago, CycleOps announced a revolutionary new device that would allow the calculation of power output during a bike ride through wearing a heart rate strap and nothing else. Back then, I wrote about it, and I was very skeptic.
Power meter product for cycling usually measure the force produce by the cyclist by using strain gauges on the crankset, on the pedals or on the rear hub.
The crankset based products, like SRM, Quarq and Power2Max, have …