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Old 08-15-2010, 11:59 AM   #72
alantf
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Join Date: Nov 2008
Location: Tenerife (Spain)
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Re: Add a Tachometer

Quote:
Originally Posted by Quimrider
Like Easy Rider said, It's far more simple and cheaper to do dual fire ignition. If you wanted to do single fire you would need a cam position sensor so the ignition module can tell the difference between TDC of the combustion stroke and TDC for the exhaust stroke. Remember in a 4 cycle engine the piston only fires once every two revolutions.
I remember in the old days, working on cars with the old fashioned mechanical breakers, that had to be changed every few thousand miles. They worked fine (until the contacts started pitting), so I would have thought that in this day and age, someone would have come up with a cheap solid state version that would do the same thing, but in a better way. :??:
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