Aden wrote:

Attached is the article for the multi-spark CDI ignition. Note

that is

425kB

long, and is in .PDF format, after OCR processing.

If anybody wants this let me know as it is too large to upload

to

everybody.

Paul Lamar

ME! ME! ME!......;-]

Thanks Paul!

Dave King wrote:

Time to fire up Orcad and make some masks for it.

Dave

I would be interested in buying a kit if it could be triggered by
Tracy's EFI.

Paul Lamar

Let me know what the triggering requirements are and I'll let you know

if

the EC2 will drive it directly or if a buffer will be necessary.

Tracy Crook
rws@altavista.net
www.rotaryaviation.com

I'll send the PDF to you Tracy.

Paul Lamar

Tracy Crook wrote:

I reviewed the article and was very impressed with the knowledge and
understanding of CDI displayed by the authors.  The design is excellent from
an electronics engineering standpoint and it could be triggered directly by
the EC2.   Keep in mind that three of them would be required for a 13B or
six for a 20B.   But, before anyone decides to use this thing,  please read
the article.   Especially the section on Applications (pg 4).  If you truly
understand the tradeoffs and still want to do this, have at it.

Tracy Crook
rws@altavista.net
www.rotaryaviation.com

Why just three units and not four Tracy? I was thinking of one coil
per plug and not using the very heavy stock Mazda coils.

I read pages three and four Applications again and I don't see what
concerns you on this. The rotary is basically like a four cylinder
with two plug firings per rev. (Each rotor fires once per rev, each rotor
as two plugs).  Are you referring to lead dressing?

BTW Jim Mederer at Racing Beat is using one MSD unit per plug on his 900 HP 
turbo three rotor. I suspect MSD's are something like this unit.

Paul Lamar
 
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