Tracy Crook wrote:

VMAZDA@aol.com wrote:

Hi Tracy
I guess what I want to know is how you set up your ignition system.
How  you
split the leading and trailing and how you set up your backup system.
Can  you
isolate the leading from the trailing in the primary system 
and the back up system.

My system connects to the stock Mazda crank angle sensor & coils
(instructions & diagrams are furnished).  Backup is accomplished by having
two identical controllers which both have the capability to drive leading &
trailing coils.  change over between the systems is done via internal
relays.  The systems have separate power supply regulators but both need
power from  your battery of course.    The leading & trailing systems are
separate on both controllers.   For pre flight tests there is a switch to
disable the leading and trailing coils (separately) to ensure that the
engine will run on either one.  I have had only one failure which was the
ballast resistor in the leading coil module.  The only change I noticed was
that the EGT went up about 50 degrees.  I didn't know it had gone bad until
the next day when I went through my pre-flight checklist (engine stoped when
I disabled trailing coil)

The ignition system uses about 5 amps under cruise conditions.   The EFI
uses quite a bit more due to the fuel pumps (about 4 - 5 amps) + the
injectors (current depends on power setting but 6 amps is an average
figure).  This can also vary with the injector type (saturated or peak &
hold).  My EFI will work with either type.

The only coils now supported are the 86 - 92 RX7 coil modules.

I'm in the process of converting the installation guide to a form that will
e-mail easily and will post it here when ready.

Tracy Crook   rws@altavista.net

Great Tracy I will put it on the ACRE web site.

PL

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