I'm still a novice with power, and looking at the following devices, they all have a different way of calculating power:
SRM: Crank
Ergomo: Bottom Bracket
Powertap: Hub
Polar: Chain
iBike: Opposing Forces
Is one way better than the rest? Do they do it differently because of patents or because power measurement is still somewhat new and they are looking for differentiation?
I'm sure over the years there have been contraptions to measure heart rate through the wrist, the forefinger, the neck, or other places, but the industry has standardized on the chest strap. Will power measurement move in one direction too?
SRM: Crank
Ergomo: Bottom Bracket
Powertap: Hub
Polar: Chain
iBike: Opposing Forces
Is one way better than the rest? Do they do it differently because of patents or because power measurement is still somewhat new and they are looking for differentiation?
I'm sure over the years there have been contraptions to measure heart rate through the wrist, the forefinger, the neck, or other places, but the industry has standardized on the chest strap. Will power measurement move in one direction too?