DeuceEFI wrote:What kind of responses did you expect, LPGo?
I've read your posts, but there doesn't seem to be anything interesting or otherwise informative to me. I'll continue to read your posts as my spare time allows; but honestly, until you share more information about what you are doing, it will be more of a passing interest...
It is good that you are making progress and I don't want to discourage you, but you already posted you don't want to hear any ideas about how to make your ECU/EMS better (especially about a better crank wheel with more teeth for better resolution). Since this is a large DIY community you are missing out on a wealth of knowledge by keeping everything so secretive, but to each his own.
So keep posting your progress, or not and I'll keep reading, or not...
Cheers,
I have had a whole discusion about only using 1 tooth, now here is my opinion...
I'm firing a 2 cilinder 4 stroke engine (as my main goal), which means theres only 1 spark event per revelution. So only the 45 degrees btdc to 8 degrees btdc needs to be accurate all other degrees are unimportant to me...
Now Citroen made a analog electronic ignition back in the 70ties... (it was the first (electronic) ignition in a production car without any moving parts). They used also used only 1 tooth at 45 degrees b.t.d.c. and now I am doing the same.. Believe me for a 2 cilinder it is spot on. It is far better then the regular (professional) electronic ignitions made for the 2cv...
Now what does a regular 36-1 tooth chip do... It measures lets say 5 or ten times per revelution (6000rpm) where the crankshaft is at the moment and does then its calculations.. Then a lag factor goes on top of this, now tell me how accurate is this????
It is so wrong that the software even has a prediction build in otherwise the ignition would be to far of...
Please correct me if I'm wrong.
Now my chip calculates the rpm and advance each time the sensor passes the pickup so every single revelution. At normal running rpm's the ignition comes at 36 degrees so within 9 degrees of my tooth... I use no lagfactor so in fact my ignition is so spot on up till now I don't even feel the need the program a prediction..... I dear to say my ignition is within 0.5 degrees accuracy of the crankshaft...
Again, I only need 1 spark per revelution, making more Sparks, 4 , 6, 8 cilinders my ignition would be to far off when revving, or deccelerting the engine, (however I have 2 four-cilinder engines running and it isn't to bad in practice)...
So believe me or not (whatever) I don't need a multitoothed wheel, end of discusion..