Review: Wahoo RPM Cadence Sensor
Measuring cadence can be a great way to check efficiency and notice when you need to be changing down a gear to keep your legs spinning optimally. In the past, measuring cadence has required a two part sensor, with one part on the chainstay and a magnet on the crank. That was the case at least, until the new Wahoo RPM sensor was released a few weeks ago. The RPM sensor is just a little bigger than a C2032 coin battery, and mounts to the surface of the crank. It provides a cadence measure through inertia readings, and transmits it via Bluetooth or ANT+ to your phone or GPS unit. Neat! Having to mount one less sensor/magnet is certainly a benefit, and makes this easier to change between bike and even mount to a spin bike in the gym. There is no faffing around with magnet alignment, you just strap it on in the zip-tie silicon case, or with the double-sided tape provided. The sensor seems to work very well: I mounted it up running parallel to a second bike computer using ...