CDI different ignition-curves

[Habbeli]

Does anyone know the differences between the cdi box to Kawasaki different engines?
I have heard that the ignition curve differs between the engines 

[Checkmarks]

Here you go

[mswyka]

Here you go

Mark, how does the cdi know whether the engine is cold or hot?

[Habbeli]

Here you go

Oh, wonderfully Checkmarks,thanks  But you have no entire table so you can see everything in the same window.
One more thing, what does Series1 Series2 and series3

[bryan_damone]

Pretty sure these are point measurements that Mark has plotted and then fitted a line through (series1,2 etc. are the point data). The points of the cold curve were measured when the engine and CDI was cold and the points of the hot curve when everything was warmed up.  Based on the relatively buried location of the CDI, I'm guessing it would see temperatures ranging from ambient to that of the outside of the cylinders/crankcase.

[Checkmarks]

Bryan is right.  Points measured and then excel plots, graphs and makes a file.  Then this forum does not afford for excel attachments so then the online converter makes it look like you see divided on two pages.

As far as hot and cold Mark, that was learned through experimentation.  The numbers moved while while verifying my data.

You are welcomed to my excel sheet just leave you e-mail Hab.

[gixxer6]

Is the shift in timing caused by temperature intentional?  Or is it simply an effect of temp on the electronics?  In other words, did Kawasaki engineers want it to shift with temp? 

[Checkmarks]

Suspect the timing shift is intentional.  The repetitive numbers showed again and again.

[Habbeli]

Bryan is right.  Points measured and then excel plots, graphs and makes a file.  Then this forum does not afford for excel attachments so then the online converter makes it look like you see divided on two pages.

As far as hot and cold Mark, that was learned through experimentation.  The numbers moved while while verifying my data.

You are welcomed to my excel sheet just leave you e-mail Hab.

my e-mail is the under my profile picture 

[Habbeli]

I also see that it distinguishes between CDI at -80 and -82 LTD
Someone who knows what?

[gixxer6]

I also see that it distinguishes between CDI at -80 and -82 LTD
Someone who knows what?

The 80' 4/6 timing curve shown in the manual looks very similar to the Invader curve on Marks graph...

[Checkmarks]

Gix,

I just re-read your post.  The next time I find some idle time I will investigate the 4/6 Cdi.  This is if my Cdi's are stock.  One of the two should be stock.  In the end it is quite a bit of work getting those numbers when other projects are creating a road block.

When you say the 4/6 compares to my "Invader" graph I assume the progressive advance.  Maybe another way to word that is the graph of the function that is entirely positive sloped.

Maybe then I better label that "Ltd" function as the 81-82 Ltd.

[gixxer6]

It looks like this: 

[Marisa30]

According to the chart the Invader doesnt have a curve like the the LTD that has the big advance to start then retards allot. The invader only appears to change maybe 3 degrees from engagement to top RPM?

[Habbeli]

So in other words I should have a CDI from a later LTD if I want an early ignition at lower revolutions