<VV> tach testing / calibration

[BobHelt at aol.com]

In a message dated 4/29/2008 4:21:40 PM US Mountain Standard Time,  
vpersh at netzero.com writes:

6  cylinders X 60hz X 60 sec/min / 2 (because plug fire every other 
revolution) =  1800 revs/min.
I have no idea whether half-wave doubles or halves the  result but am I 
missing something? 



Try this:
 
120 pulses X 60 sec    X  rev        X 2    =    2400 rev
     sec               min         6  pulses                        min
 
 
 
OR
 
2400 rev  X  min  X   6  pulses  X   1     = 120  pulses
 min              60 sec         rev              2                min
 
 
Regards,
Bob Helt



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