Review: Wahoo RPM Cadence Sensor

Wahoo-RPM
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 a standard cadence sensor, and they gave very similar readings (+/- 3 RPM).

This is a very neat and easily portable option for a sensor then. Some might say it is a little pricey at £40 RRP, but it could present good value if you can use it on multiple bikes and at the gym, and with either an iPhone or an ANT+ computer. Worth a look.

The Wahoo RPM is available from uk.wahoofitness.com (Link)
Wahoo-RPM
The sensor is well protected in the silicone case, and can be mounted to the inside of the crank.
Wahoo-RPM
Chainstay clearance may be minimal on some bikes, but you can also mount it to the outside of the crank.

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