moontownMooney

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About moontownMooney

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    Advanced Member

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  • Model
    M20F

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  1. moontownMooney

    Window Haze Repair

    Hoping to repair some hazy side windows with an acrylic polishing/repair system. Does anyone have any experiences with the same using Novus, EZ Clear, Optica 4, or something else? Any recommendations? Sent from my SM-G930V using Tapatalk
  2. moontownMooney

    Mooney down in Houston

    From that article, what does "According to the other pilot, Waller's plane had become a collision hazard for several other airplanes. " mean? Sent from my SM-G930V using Tapatalk
  3. moontownMooney

    fuel and oil leak from drains

    Moisture (which can cause corrosion on it's own, or combine with chemicals in the oil soup to form even more corrosive acids) as well as solvents (e.g., unburned fuel vapor, which deplete the protective oil film on the metal parts) are continuously added to the crankcase volume during engine operation via blow by past the piston rings. This added gas must be vented or the crankcase would build unacceptable levels of pressure. In addition, most of these detrimental additions (moisture and solvents) will remain as a gas at engine operating temperatures. So throwing this excess pressure gas overboard is a good way to get rid of the worse portions of the blow-by constituents which are continually added to the crankcase. The oil separator attempts to scavenge some of the oil which would be thrown overboard with this gas for environmental, cleanliness, and oil cost reasons, but because the separator is imperfect, it will inevitably put more of the moisture and solvents back in the crankcase than if you didn't have the separator at all. The relative amount and its significance, I cannot speak to. PP and AE thoughts only, not an A&P or any other relavant letter. Sent from my SM-G930V using Tapatalk
  4. moontownMooney

    Basing a J on Grass

    I have an F based at 3M5 which is 2200 ft grass strip, rising terrain and trees off one end, road and power lines off the other. 500ft elevation but summer temps cause density altitudes of up to several thousand feet. It is very doable, but there are additional considerations, as many have mentioned. De-rate your gross weight at least 200 lbs until you get comfy. Some measure of soft field takeoff technique likely needed. Must pull the plane off the runway before it wants to, or you never get to full/normal rotation speed due to rolling resistance. Grass helps slow you on landing once wheels touch, but must be disciplined about coming over the threshold at 80mph or you will float too far. You will have to be comfortable going around, it will happen. For this length on grass, mid-field is a good go/no-go decision point. If the wheels aren't off on take-off or down on landing by mid-field, then abort/go around. Sent from my SM-G930V using Tapatalk
  5. moontownMooney

    Pre-buy Inspection in Houston Area

    Not sure how close you are looking for, but we did ours at Southwest Texas Aviation and were very pleased. Sent from my SM-G930V using Tapatalk
  6. moontownMooney

    Cabin Heat Won't Shut Off Completely

    I wanted to close out this thread. We finally got our cabin heat fixed. We had resigned to waiting for it to be fixed at the annual, and our mechanic said he fixed it and charged us for it, but in reality made it worse. In the end there were two or three problems which were a little more unusual and beyond the standard "missing seal" cause so I thought I'd detail here. At the start we certainly were missing the seal (a replacement had not been adhered properly to the valve plate/flap and blew off, becoming lodged in our vent ducting. At annual, the mechanic did a sound job of reinstalling, adhering the seal to to the valve and trimming precisely. As I mentioned however, the heat was actually worse at this point. Inspection revealed: (1) The bushings on the flap valve axle were badly degraded or missing entirely, allowing substantial slop in the valve (1/8 - 1/4" gap). (2) The actuator cable sleeve had become unanchored from the firewall and/or nearby structure again allowing substantial slop in the valve. (3) This one is a little less firm, but precisely trimming the seal to the valve flap radius and completely adhering the seal to the valve flap prevented the seal from being able to accommodate even the slightest gap or misalignment. As such, the new seal was trimmed to slightly overhang (1/8") the valve flap and it was adhered only on the inner 1/2 to 2/3 of its radius, giving the seal more flexibility to accommodate small gaps or misalignment. Thanks to all who contributed to this thread! My heat works... now on to the air conditioning ! Sent from my SM-G930V using Tapatalk
  7. moontownMooney

    Mac 1700

    Highly recommend you talk to Bevan Rabel regarding repair of your Bendix King radio. They have a guy that specializes in them and they are very good at diagnosing and doing even component (resistor, capacitor, etc.) level repairs and replacements. They were recommended to me for this purpose by two other folks and my experience with them definitely exceeded my expectations. Sent from my SM-G930V using Tapatalk
  8. moontownMooney

    Airpath compass mount

    Okay getting the picture that our compass mount isn't original or proper. Does someone have a pic of this style of compass mount properly done? Was the airpath compass original equipment for the 68 M20F? If so, per Clarence's description, shouldn't there be two front-to-back through holes in the windshield tube/strut to accommodate the mount screws? Sent from my SM-G930V using Tapatalk
  9. moontownMooney

    Airpath compass mount

    We just got a new compass mount (plastic piece inside which the compass mounts) for our airpath compass mounted to the vertical beam in the middle of the windshield. This plastic piece seems to do its job well enough, but there is a thin sheet metal u-shaped piece that attaches the plastic mount to the metal tube/strut, and this metal piece causes the plastic mount and compass assembly to vibrate quite badly. Is this metal attachment original? Are there other part options? If this is common are there folks that have had luck with modifying or damping the mount attachment to reduce compass vibration? Sent from my SM-G930V using Tapatalk
  10. I recently had to redo the settings on my JPI due to an unexplained factory reset (likely during the annual). To get the current local pressure at field elevation, in order to set the JPI's manifold pressure offset/calibration, I simply set my altimeter to zero altitude and read the pressure from the window. However, now my JPI is reading about an inch higher than my engine MP gauge. Thoughts? I would think my IFR certified altimeter would be more reliable than an MP gauge, but does this mean my MP gauge needs adjusted or am I missing something. Sent from my SM-G930V using Tapatalk
  11. moontownMooney

    Brittain Industries coming back

    I had this exact thought! Sent from my SM-G930V using Tapatalk
  12. moontownMooney

    TANKS - Weeping - Patch - Nuance

    Regardless of advice on how to resolve the issue and how to navigate the purchase price, I agree that you shouldn't let a fuel weep scare you away from an otherwise good plane. Just be aware it will take some time and or money. But almost no plane of this vintage is issue free. I don't think you've said where the weep is, but a weep into the cabin is more serious and needs immediate attention. It isn't necessarily harder to fix but it does require immediate attention. Sent from my SM-G930V using Tapatalk
  13. moontownMooney

    Brittain Industries coming back

    So glad to hear this! Good for their family, good for the Mooney community, and good for my currently non-functional step retract boot...[emoji1] Sent from my SM-G930V using Tapatalk
  14. moontownMooney

    Oil changing - Trying to not make a mess

    What should one look for when inspecting the exhaust system in this manner? Sent from my SM-G930V using Tapatalk
  15. moontownMooney

    Oil changing - Trying to not make a mess

    We have the aviation version and it is definitely worth the money to me. It is far better shaped for aviation purposes than the other form a funnel models. We have not been successful in using it to catch oil from the filter, but we didn't try very hard and only tried once so far. Sent from my SM-G930V using Tapatalk