How many watts do you have?

Now, it's not only anal-retentive roadies who'll know. (It'll be anal-retentive mountain bikers, too).

All well-intended-ribbing aside, Saris' PowerTap has proven itself a useful training and racing tool for racers at the upper levels. We wouldn't mind trying one on a SS, so that we could know exactly how manly we are.

powertapgeek.com
cyclingnews.com