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On 10 Jun 2002, at 7:41, Ben Doughney wrote: > On my digital tach, it has an inductive pick up that goes around a SP wire, but > only has one position for tach (on the mode switch), but it will work with 4, 5, > 6 or 8 cylinders. I have always wondered how it works out how many cylinders are > there? While the traditional way has always been to just read the points and divide by half the cylinder count, this way works fine, because no matter what engine you put it in it just has to multiply by 2 as long as this is a 4 cycle engine. On any 4 cycle engine each SP fires every other revolution. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/