PowerTap P1S Single Power Meter Pedals

The latest addition to the Powertap portfolio of power meters is the P1S. It is very similar to its older brother (the P1), except for the fact that the right pedal is actually a dummy. The left pedal has the electronics in it, and the right pedal has no electronics.

The main visual difference is the black battery cover, which cannot be removed (so you can't mistakenly put a battery in it).

Functionally, what happens is the left pedal will double its watt measurement and give you total power. It is very similar to all the other single sided power meters out there. Weight savings are small because the electronics don't weigh much. You'll enjoy the same ease of installation in switching from bike to bike as the P1, in addition to that, it broadcasts in both Bluetooth and ANT+.

Another major difference is the cost. As half of the electronics have been removed (which are quite expensive), you get a serious reduction in the price. So if you're a bike enthusiast who is interested in getting into power, and you want a pedal power meter system, there is no better way to get started with accurate pedal-based power than the P1S from Powertap.