I am getting erratic RPM/tach values on my MyChron (kart models), how do I fix this?
• Inspect the where the metal clip connects to the RPM cable. We have seen several instances where the solder connection from the wire to the clip was broken, yet the heat shrink covering the junction actually held the two together. If this is the case, contact your local dealer to obtain a newer style rpm lead clip. Click here to read more about the new style RPM clip, introduced in January 2006. Spiraling the RPM cable around the plug wire will always help in getting a good RPM signal. We also recommend running the RPM cable along the chassis, not enclosed in anything, as much as possible. Doing so actually creates a sort of capacitor, whereas you physically have metal chassis, then the RPM wire shielding, then the actual copper conductor, and this helps ensure a clean rpm signal. Take care not to overtighten tie wraps. If your lead is too long don’t coil it up, just cut the tach end to length. At the tach end make sure that the lead loops through the two small holes and then extends
