Join Date: Nov 2005
Location: Virginia Beach, VA, USA
Ring/speedo separate items
The rings are independant of the speedo. I had a speedo failure with no problems with my ABS.
The rings on the wheels, (on a '00 and similar bikes, they are teeth rather than holes) are in fact the ABS sensor. The speedometer sensor is in the final drive. The shaft makes a 90 degree turn to the wheel. Encased in the enclosure is the final shaft to the wheel, surrounding that is a sleeve which is "scalloped" which spins, then a magnetic sensor detects the intteruptions and transmits to the speedo. Older bikes actually have the sensor pickup on the outside (a wire is coming out of the final drive).
FWIW, my speedo failure was that this sleeve has moved off the drive and was no longer spinning as it should. This piece is glued on by the factory (no real lateral force on it to speak of). I pushed it back onto the drive and it has had no issues since!