[Healeys] Erratic Tachometer

[Peter Caldwell]

I believe Jeff Schlemmer of Advanced Distributors has evidence of 
potential tach problems with some Pertronix installations.  Something 
to do with EMF, but I'm not smart enough to relate all of it.  Try 
him through www.advanceddistributors.com

         Peter C

At 01:37 PM 8/19/2013, Len and/or Marge Hartnett wrote:
>Not sure this was received by all on The List as it went out as Rich 
>Text (HTML) although I did receive one response to check the coil 
>and condenser (I have Pertronix).  I'm trying Plain Text this time
>
>My BJ8 tach has become erratic (not erotic although the needle is 
>doing a great shimmy and shake).  In 2004, it was steady but 
>incorrect.  I replaced the C2 capacitor per article by Frank 
>Filangeri (can be found on John Sim's web site) and that solved the 
>inaccuracy problem. Now it fluctuates constantly by 100 or 200 
>rpm.  There are two other articles on John's site one of which 
>(author unknown) recommends replacing virtually every electronic bit 
>and piece in the tach.
>
>I can not find anything in the archives specific to my current 
>problem so therefore my question is:  will replacing only the C2 
>capacitor solve my erratic needle problem?  Is there something else 
>I should check first?  I do not relish the idea of replacing eleven 
>items one by one and having to reassemble and test each time.
>
>(The Other) Len
>Vacaville, CA, USA
>1967 AH 3000 MkIII, HBJ8L39031