JimL
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Generator blown enroute to Oshkosh :(
JimL replied to druidjaidan's topic in Vintage Mooneys (pre-J models)
A panel mounted voltmeter is the best indication of your electrical system health. Include it in your scan just like the vacuum gauge. Some analyzers include voltage in their readout. If the voltage goes below 14 and heads downward, you are running on what's left in your battery. Time to shed load, especially at night. BTW, my Zeftronics generator regulator is going on 20 years trouble free. -
Check the mag switch. We had a similar problem with my neighbor's Swift with an IO-360. If we pulled the p-leads off the mags, it ran smooth as glass. Put them back on and the roughness reappeared. After installing a new mag switch, I disassembled the old one and found carbon tracking between the contacts.
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Generator blown enroute to Oshkosh :(
JimL replied to druidjaidan's topic in Vintage Mooneys (pre-J models)
I had a similar issue with my 66 E some time back. Turns out the voltage adjust screw on the mechanical regulator had vibrated loose and was regulating at 11.8 volts. Too low to start the engine but ran the digital radio just fine. Picked up a Zeftronics generator regulator at Oshkosh and it's rock solid. The old mechanical regulator varied the voltage with vibration from the engine. I rebuilt the generator at the last overhaul and it's been trouble free.
