Reviewed - Power Meter Crank Arms
All the power meters featured in this category acquire their power measurement from one side only. Currently all the products listed below monitor power from the LEFT leg. Most power monitors will simply DOUBLE the wattage from the left leg to give an average total power output. What can't be measured with these power meters is LEFT and RIGHT power balance. The best way to do this is with power pedals or other dual sided power metering systems.
However, for a vast majority of cyclists this averaged TOTAL POWER is more than adequate. These single sided power meters are some of the most popular on the market due to their ease of fitting, accuracy and low price (compared to pedals/chainring systems)
The Rotor 2INPower has been included in this category as it features strain gauges in the RIGHT crank arm as well as the axle spindle, measuring LEFT leg power. This 2INPower is a TOP END product and best suited to elite cyclists looking to add power metering to Rotor's Q-Ring chainrings.