Originally Posted by Bulldust
As the hall effect sensors in the cam driven bean can are triggered every
180 360 degrees of crank rotation using two active sensors at 180 degrees apart in the bean can would trigger a pulse at every 90 360 degrees of crank rotation (as the cam/bean can is rotated 2:1 1:2 to the crank) seems to me that you would still have a wasted spark on each cylinder, and use twice as many sensors to do it. Also getting the two sensors mounted precicely 180 degrees apart is difficult unless you use an adjustable mount on one sensor.
Your conclusion is right though. In order to trigger each cylinder once every 720 degrees of crank rotation, you'd need to make a rotor with only one trigger point on it instead of two which the stock one has. You'd also need one sensor to have a bit of adjustment to get it just right. As big as a PITA as that sounds, ducatis are like that.