Re: Digital RPM meter.

["Lisa & Rick" <hugacub@whidbey.net>]

On  7 Feb 97 at 1:58, Domenic Lippolis wrote:

>         I would think that off the primary you would get 1 pulse
>         each time
> the plug fires  and therefore each time the motor turns one
> revolution. Because with each revolution one of the cylinders will
> be firing.  I am quite positive there are no "dead turns" with the
> VW 4 cylinders.

Aren't you trying to say that during each revolution all 4 plugs will 
fire?  Therefore, you'd get 4 pulses per revolution from the primary 
or the hall sender.  So if you take it off one of those, you need to 
divide by four to get one revolution. 



Rick    hugacub@whidbey.net
85 Scirocco 8V  Wolfsburg
Oak Harbor, WA
(On Whidbey Island in the Puget Sound)
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