[Vwdiesel] "W" alternator

Sat Jan 31 23:39:48 PST 2009

In a message dated 1/31/2009 11:24:29 PM Pacific Standard Time, 
adamanderr at hotmail.com writes:

> didn't any mk1s come with tachs and why wouldnt a gas one work?
> thanks
> 

  Never saw one, maybe Mark got them in the UK?  Gas tach gets 
4 pulses per rev.  W terminal gets I'd guess it's 6 or 12 since there 
are 6 diodes.  Could even be as much as 24 if there are 6 windings 
and they see two hits per rev and each hit would get an up and a 
down swing on the sine wave for two pulses per hit.  Just a guess.
Jake built a thingy for his once, uses a couple parts and a pot to 
adjust it.  I have the schematic SOMEWHERE on a HD in a machine 
somewhere in the house, I think.  
  Maybe Roger has it on his diesel oracle?
    Loren

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