User Manual

Pedal-Based Power
Rally measures pedal-based power.
Rally measures the force you apply a few hundred times every second. Rally also measures your cadence or
rotational pedaling speed. By measuring the force, the direction of force, the rotation of the crank arm, and time,
Rally can determine power (watts). Because Rally independently measures left and right leg power, it reports
your left-right power balance.
NOTE: The single-sensing Rally system does not provide left-right power balance.
Cycling Dynamics
Cycling dynamics metrics measure how you apply power throughout the pedal stroke, and where you apply
power on the pedal, allowing you to understand your particular way of riding. Understanding how and where you
produce power allows you to train more efficiently and evaluate your bike fit.
NOTE: You must have a compatible, dual sensing power meter connected using ANT+ technology to use cycling
dynamics metrics.
For more information, go to www.garmin.com/performance-data.
Using Cycling Dynamics
Before you can use cycling dynamics, you must pair the power meter with your device using ANT+ technology
(Pairing Your Wireless Sensors, page 40).
NOTE: Recording cycling dynamics uses additional device memory.
1 Go for a ride.
2 Scroll to the cycling dynamics screen to view your power phase data , total power , and platform center
offset .
3 If necessary, select Data Fields to change a data field (Adding a Data Screen, page 48).
NOTE: The two data fields at the bottom of the screen can be customized.
You can send the ride to the Garmin Connect app to view additional cycling dynamics data (Sending Your Ride to
Garmin Connect, page 44).
Power Phase Data
Power phase is the pedal stroke region (between the start crank angle and the end crank angle) where you
produce positive power.
Platform Center Offset
Platform center offset is the location on the pedal platform where you apply force.
Wireless Sensors 41