I’m planning to buy the cadence & speed sensor for the touring bike.
The problem is, the front wheel hub is dynamo, it’s shimano T-8000 series, I have no idea about the wahoo sensor and dynamo hub compatibility.
As I known the speed sensor need to be fit on the normal hub, and the diameter of dynamo hub is much bigger than normal hub. How to fit it?
And is the cadence sensor a magnetic sensor? Will the magnet in the dynamo effect the cadence sensor accuracy? (I’m not sure if there is the magnet in the dynamo, )
I need to comfirm these 2 problem before ordering.
TH4nkz.
As @DameLisa says, I have the speed sensor on the rear hub. The cadence sensor needs to either attach to the left crank arm or your shoe and AFAIK uses a tilt switch or some sort rather than relying on a magnet. I would be extremely surprised if the dynamo causes interference with either.
IDK about the Wahoo sensors. The Garmin sensors operate by sensing the Earth’s magnetic field so the magnets in a dynamo hub might effect them. Here’s what Garmin says: “The Garmin Bike Speed Sensor and Speed Sensor 2 both contain a magnetometers that measures the three dimensional components of the ambient magnetic field (similar to an accelerometer measuring acceleration). As the wheel rotates, the magnetometer measures its own rotation within the surrounding earth’s magnetic field.”
FWIW: I’ve always mounted the Garmin speed sensors to the front wheel hub where it’s exposed to less debris and contamination. It’s also easier to mount there as the center of the hub is usually smaller in diameter and easier to access not having a cassette.
I had to use a zip tie in order to get my Wahoo Speed 2 to fit on any of my rear hubs. It looks like the retainer was designed to fit only on a front hub.
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