In a message dated 4/30/2011 10:59:19 A.M. Paraguay Standard Time,
echristley@att.net writes:
I had to
do something in order to add a second VR and second ignition controller.
You're telling the computer where the
crank is and it decides when to send
a spark. It doesn't know where that spark is going, it just sends it
when it
thinks it is time.
So my goal was to have backup
ignition. The problem is that you can't have two VR sensors in the same
place, and going
to one and some sort of splitter circuitry introduces a
single point of failure.
My solution was to place the backup VR sensor
185* on the other side of the trigger wheel. Since the 2nd rotor fires
180 degrees off from the first, all I have to do is switch the plug wires
between the rotors, and I have ignition events
from independent sources
that are placed 5 degrees apart. The first is controlled by the ECU to
modify the advance.
The second runs off a separate power
source.
So the object of the second pickup is to troubleshoot the primary
pickup?
You can mount a pickup and reluctor system on any piece that rotates at
crank speed, and have two independent systems you could switch between under
power.
Or, you could have each pickup (two pickups 180 apart and one reluctor),
drive its own system and run the front housing from one, and the rear housing
from the other. And if you want a CD system on each of those, you could drive
one coil for each plug,
or, one double ended coil for each housing. If you go CD or MSD be sure the
coils are compatible.
Lynn E. Hanover