Wheel Speed Sensor as Papa said.. You can see the magnets on the brake rotors above the rotor "T" drive points... Interesting I thought they would have used an actual tone wheel with more pick up points...
What's interesting is it looks like it T's off behind the caliper first. I wonder if that's just a bracket to hold the wire or if its 2 separate sensor wires. One for wheel speed and another for brake pressure. I generally though brake pressure sensors were located near the master cylinder though???
I was hoping for a more elaborate answer or some kind of new motorcycle technology. But you're probably correct about the speed sensor.
no, for reals: i don't think it's a wss, since there are only 8 legs to pick up a signal. typical abs rings have like 42 or so. might be an infrared temperature sensor.
That's an Aprilia RSV4, not a WSS bike. Haslam is riding the bike this year. I'm pretty sure those guys don't use any kind of ABS. Its a wheel speed sensor for traction control more likely. I don't think they would be monitoring the temperature of the rotor carrier (sensor looks like its mounted too far inward) unless its aimed outward to the steel area on the rotor.
yeah, but still , TC systems use the ABS rings. even at higher speeds, i'd guess they'd be too coarse with just 8 signals (assuming the star will transfer and not the holes in the disc) per revolution. but TC is the most likely case, i agree. and / but: it's on both sides? (2014 here)
In a somewhat related manner, was there a thread on the EBR bike for Canepa using a dual rotor setup?
Just saw a post on facetubes that Can was 1.4 seconds or so off fast time. Photo showed a standard Ohlins with dual disks. Peegravel got a stomach bug and couldn't finish the test.
I think maybe the sensor is to turn on the headlights. You know, the bike must be rolling to turn them on so you don't run the battery down.
If you look at it a while. You'll notice it's over the rotor itself, it's a temp sensor. Not enough pickup points for a proper speed sensor. Looking at the rotor, it has a lot of heat marks at the T-Drive point. They probably overheat.