There are only one or two people on here that have
any idea what I am talking about but I will do it
anyway :-)

I printed all 265 pages. I set the type size to 8  and set the
right and left margins to .5 inches.
That cleaned it up a bunch and put the comments in the
proper columns with very few wrap around. It also
cut the number of pages.

The first 25 pages are the history of the corrected bugs and
problems and Tracy did a lot of work starting in 1999 through 2015.
My estimate of the code source size is half was ignition dwell and
advance. Do away with that and use a capacitor
discharge ignition system and it cuts the code size down
by half.

In my experience when you double the size of the code your
difficulty in maintaining it goes up by a factor of at least
4 or more.

The other factor that increases the code size is the obsolete
look up table way of doing EFI. Open loop. The answer
is closed loop.

However I have no intention of writing anything
any more in ASM. High level languages are getting too good
and processor's are getting faster.

My original road test system was a real time multitasking
OS with 22 programs in 4K of e- prom. It displayed and printed
in real time. Maybe the very  first.  I have not found any others
documented yet.

http://www.rotaryeng.net/IEEE-road-test-sys.pdf <http://www.rotaryeng.net/IEEE-road-test-sys.pdf>

Paul Lamar


   Well, I am certainly not one of the two people on this group who understand ASM!!

   I am probably in the majority, who need an ignition/fuel controller that is more plug-and-play in order to get our projects running.  I would certainly be willing to sacrifice optimal fuel consumption and power for a reasonably simple, smooth running system that works up to 10,000 feet.

   I thought that several members of this group stated that the latest version of Tracy's EC2  was running pretty well with standard settings out of the box?

   My Microchip CPUs are PIC18F6680.  Would it be reasonable to attempt to find a local programmer with ASM skills who might be able to update the software on my box?

   Scott Gettings

   There are a lot of young men into microchip programing. Finding them is the problem.
   You might try an ad in Nuts & Volts magazine. They would also have to have some
   experience in EFI. Also there are forums for MicroChip programing.

   Buy a CD system from M&W and that will cut the code required in half
   and make it much easier to understand and  modify Tracy's code.

   It would be easier and lower cost  to start with a Maximite and do a closed
   loop system. Major advances in O2 sensors since Tracy last worked on this.

   Maybe if some of my motivation returns I will do it. One can simulate
   an O2 sensor with a potentiometer.

   May take me a couple of hours :-)

   When I get it working I will come out there and try it on your engine.
   Visit Jean and some of my friends in Fort Lauderdale.

   Use one per rotor as processor speed would no longer be an issue.

   It would be a major advance for all EFI rotaries in the future.

   In the mean time you could buy two O2 sensors with displays that
   mount on the instrument panel. That will get that part working
   and checked. Also help you tune Tracy's system.

   Paul Lamar


Scott, if you decide to go with Paul's suggestion,

"In the mean time you could buy two O2 sensors with displays that
mount on the instrument panel. That will get that part working
and checked. Also help you tune Tracy's system."

I have priced out a single system, which seems reasonable, from

http://www.ecotrons.com/products/accurate_lambda_meter_dual_channel/

Steve Carlisle


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