<VV> FW: Re: tach testing / calibration

[sharpiebandit06 at bellsouth.net]

Our battery charger is bad, so I'll have a new one this evening to test the tach. Thank for all ya'll's help. Could someone indulge my unbeknownst nature and explain to me just how a tach works and how the electricity runs through it?

Charles   4/30/08
-------------- Forwarded Message: -------------- 
From: BobHelt at aol.com 
To: vpersh at netzero.com, virtualvairs at corvair.org 
Subject: Re: <VV> tach testing / calibration 
Date: Tue, 29 Apr 2008 23:59:50 +0000 



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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