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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Randall<o:p></o:p></p><p class=MsoNormal> It depends on why your Tach is dead.<o:p></o:p></p><p class=MsoNormal>When my Tach was working poorly I took it apart to see if there was anything obvious causing the problem.<o:p></o:p></p><p class=MsoNormal>I found that the rosin on all the solder points was flacking off and stopping the working parts.<o:p></o:p></p><p class=MsoNormal>I brushed off all the rosin and very gently blew out all the rosin – use very low air pressure here like 1 or 2 psi.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Tom Hall has an add on board that might help you. I’m not sure if can restore a totally dead Tach.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have Pertronics ignition and the stock Tach. Seems to me originally this setup caused the Tach to jump around some.<o:p></o:p></p><p class=MsoNormal>I believe Pertronics has a filter which stops this. At the time I was discussing this with Tiger Tom in PA. He investigated this and made his own filter which I installed and the Tach worked correctly.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Ron Fraser<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Tigers <tigers-bounces@autox.team.net> <b>On Behalf Of </b>Randall Antosiak via Tigers<br><b>Sent:</b> Tuesday, July 16, 2019 8:18 PM<br><b>To:</b> Tiger List <tigers@autox.team.net><br><b>Subject:</b> [Tigers] Tachometer and Petronix<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'>My tach is dead and the repair shop (Palo Alto Speedo) has given me two options for repair: 1)<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'> stock electronics ($225), or 2) Petronix compatible electronics ($335) which requires an additional wire from the coil to the tach. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'>I seem to recall that hearing that a stock electronics tach will work with an induction wire which has the loop removed <span style='color:black'>(this is the white wire from the ballast resistor) </span>. Obviously this is the preferable option - does anyone have experience with this? <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'>Thanks!<o:p></o:p></span></p></div></div></div></body></html>