ABS Rear Sensor--Uh oh!

[daviddowns2000]

I removed the rear wheel to replace the tire, had duct tape ready to cover the ABS sensor electrode so it wouldn't touch any metal on the bike per the caution note in the manual supplement, and fumbled it! The electrode touched the brake rotor. Now what? Should I just go out and order an '06? Seriously, did I do any damage, or does that caution only matter if the key is turned on? I guess I'll find out when I re-install everything after the new tire is mounted, but don't want to find out the hard way and have a problem braking if I screwed something up.

 

[Warchild]

No worries, you should be okay. Unless you saw that MASSIVE SPARK occurred when it struck the steel rotor!

<kidding> :lol:

 

[GAPS]

Is the ABS sensor a 'hall' sensor, similiar to what is often used to read an ignition rotor?

 

[ionbeam]

Yes, the ABS sensors are Hall Effect. If the sensor is allowed to hit steel while the ignition is on there is a very remote chance to create a voltage spike big enought that it could damage the ABS computer. I wouldn't loose sleep over it.

Alan

Real basic: When a conductor (copper wire) has a current flowing through it and becomes immersed in a magnetic field it produces a voltage. The FJR ABS sensor is a coil of wire with a magnetic pole piece in the center. As a metal tooth on the ABS wheel (reluctor wheel) passes by the ABS sensor an electro-magnetic field is generated which produces a voltage spike. One tooth, one voltage spike, next tooth, next spike. The very busy ABS computer knows how many teeth are on the ABS wheel and from this the computer can calculate RPM and rate of change. This is the fundamental information used for ABS calculations. :dribble: :lazy:

 

[kindofblue]

Ionbeam,

Thank you for explaining how ABS works. I wasn't put to sleep at all. B)

 

[toophast]

I no sleepy either, wondered how it realized skidding was occuring--thanks

 

[nusman68]

Ionbeam is correct, however with the 06s Yamaha has now added the "STS" (sphincter tension sensor) which is integrated into the seat and reports to the ABS computer....

 

[user 1521]

I no sleepy either, wondered how it realized skidding was occuring--thanks

+1 nice explanation Ionbeam :clap: :clap: :agent: :haha:

 

[huron52]

Ionbeam is correct, however with the 06s Yamaha has now added the "STS" (sphincter tension sensor) which is integrated into the seat and reports to the ABS computer....

Oh no...... I can see where this is going!

 

[Fallen Jim Rides again]

Ionbeam is correct, however with the 06s Yamaha has now added the "STS" (sphincter tension sensor) which is integrated into the seat and reports to the ABS computer....

Are you sure about this? I thought I read that it was "STD" (sphincter tension detector).

 

[daviddowns2000]

Just for closure, I got it all back together and everything seems to be fine. It's a good thing it probably doesn't do any damage to touch the electrode to metal when the key is off, because it sure isn't designed well for avoiding it! Seems like it should have been easy to design a shield around that electrode to help prevent inadvertant contact. Anyhow, it was a beautiful day for a ride to scrub in a new tire here in Miami. Now, if I can just avoid any more punctures for a while...

 

[vectervp1]

Ionbeam is correct, however with the 06s Yamaha has now added the "STS" (sphincter tension sensor) which is integrated into the seat and reports to the ABS computer....

STS? I thought that was a Cadillac?

 

[Constant Mesh]

ionbeam --

The wheel speed sensors are not Hall Effect sensors. Each sensor is composed of a permanent magnet and a coil of wire. These are two wire devices.

The speed sensor (transmission output) and cylinder identification sensor are three wire devices and are probably Hall Effect sensors.