Message #16523

[LivingProof]

I know in the Apple Stores, they sell a device that attaches the I-phone to a bike's handlebar and enables GPS technology. Great - crash your bike, buy a new phone.

But, this season, I'll play with skiing app! Engineers are data people.
John,
I am not familiar with power meters on bikes. Just guessing, but, is it a mathematical logarithm that computes power based on actual gear ratio's, cadence and speed? What cycling benefit do you find from monitoring power output?

I use a HRM and, from experience, I know when I'm riding with insufficient rest or feeling great. It also curbs excesses riding up hills or into wind, and, tells when loafing with wind at your back.