rvmills
Well Known Member
New VAF Member, and first-time poster. I purchased an RV-6 this summer (N600SS, built in '98 by Tom Hallendorf as a "Super Six" with an IO-540). It has a VM1000 that is showing occasional erratic behavior in RPM indication (ex: set at 2100, it goes from 2100 to 1400 to 2100 to 1800, etc,. bouncing around, then stabilizing back at the set RPM...no actual RPM change, just the indication). I have a Lightspeed EI and a Bendix mag, and I've looked for the Tach sensor with no luck. The only lead coming off the mag is the P-lead, and I've traced the EI wires to the EI box under the panel, but all wires seem tightly connected there. Same appears to be the case for all wires going to the brains of the VM1000. If anyone has experienced the same problem and has any recommendations, or can help me narrow my search for a solution, I'd really appreciate it! Thanks, Bob.