dtcom
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It seems that the bulb has a shield inside the lens. If the GE logo is right side up, the shield is on the right side of the bulb, looking at it head on, or towards the pilot's side. Does anyone know what this is for? I've been told that it keeps the light off of the propeller. Any thoughts on that? David
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Does anyone know if the cowl mounted landing light in a 1985 M20J can be aimed? I noticed that when taxiing at night, I can see the second story on buildings very clearly, but cannot see the yellow line on the taxiways! Could the bulb (recently replaced) be mounted upside down or sideways? What is the correct orientation of the bulb?
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Quote: mooneygirl Glad you are coming. Remember about Happy Hour at Building C sponsored by ArtCraft and Lt Dan Band on Friday night.
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Just found a new symptom. The CHT was inop for some time - we have an Insight GEM which shows CHT. Now that the sensor for the CHT was replaced, it exhibits the same behavior as the oil temp guage. I checked various grounds, including a temporary grounding cable between the engine and the battery to eliminate any high resistance ground, but no change. When the alternator breaker is pulled, the displayed temps go down significantly, but I can't see the alternator affecting the guage readings. Anyone have any more ideas??
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Just Completed APS Engine Management Online Course
dtcom replied to Earl's topic in General Mooney Talk
Quote: danb35 How does the lead in the gas get to the valve guides to lubricate them? How many airplanes with mogas STCs have had this trouble? I'd think that if the lead in 100LL contributed to (or was required for) lubrication, the FAA wouldn't have issued the mogas STCs. -
Quote: Barry If you are measuring the bus voltage through a good ground, you will see the voltage stay the same. If the sensor ground is bad, the drop will be on the ground side. It's not the bus voltage that is varying but the voltage drop across a bad ground on the ground or return side of the system. Try adding a better ground directly at the sender or directly at the meter terminal and see if that cures the problem.
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Just Completed APS Engine Management Online Course
dtcom replied to Earl's topic in General Mooney Talk
My mechanic said that part of the fuel's job is lubrication. He said that the lead in the gas lubricates the valve guides, and if you run lean of peak, there is less lubrication and the valve guides will fail prematurely. He worked at Mattituck rebuilding engines for several years. Any comments? -
Quote: HopePilot All the hotels are booked. Any PIREPs on places to stay further out?
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The bus voltage stays the same on increasing load. We've tried adding grounds from the guage cluster frame directly to the engine, and have not had any success.
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On a 1984 M20J the factory oil temperature guage seems to read slightly high. Then when you add an electrical load, landing light, pitot heat, even the panel lights, the temp jumps up, seemingly in proportion to the increase in load. It goes back to where it was when the electrical load is reduced. Does anyone have any suggestions?