moontownMooney

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About moontownMooney

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  • Model
    M20F

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  1. Any chance you could have cabin heat duct that has come off a fitting or worn through, bathing the avionics in exceedingly hot air? I dont know if the air is really hot enough to do this (it is pretty freaking hot) but it is a failure mode that could suddenly affect all your avionics and obviously without leaving an electrical supply failure trace. Sent from my LM-V405 using Tapatalk
  2. Yeah... it has disappeared Sent from my LM-V405 using Tapatalk
  3. Can anyone offer any information regarding the o-ring that holds the rubber servo boot in place on the fixed servo base of the step retract vacuum servo. I have a '68 M20F but I would expect it is similar/same for any model with a vacuum step retract servo. Ours has broken and I need to source a new one. Any info on vendors, part number, material, or dimension is appreciated. Sent from my LM-V405 using Tapatalk
  4. Hello All, I want to offer a PIREP for some Brittain repair work I had done recently. We were having some issues with our Brittain components (Turn Coordinator, and AccuTrak). I contacted Bevan Rabell since they had done great work on legacy BK equipment for us. They indicated that they dont work on Brittain, but graciously pointed me to Porter Strait Instrument Co in Tulsa, OK. Upon contacting Porter Strait, I found out that they have a gentleman named Kevin who supports them on an as needed basis doing any Brittain repair work and that he is a former long time Brittain employee. They connected us with Kevin to evaluate our issues and identify instruments and model numbers before we sent anything in. We found Kevin to be incredibly knowledgable and also quite entertaining to talk to. He was intimately familiar with Brittain products by model number, description, functionality, common problem components (e.g., this capacitor typically goes bad, that valve usually needs cleaned and lubricated, cuz it gets stuck), etc. Longer story short, they inspected, cleaned, and repaired multiple pieces of Brittain equipment for a very reasonable price and in 1 to 1.5 weeks including round trip shipping. Kevin also educated us on some functionality and limits of the instruments we were unfamiliar with (or had forgotten). Bottom line, if you are having problems with your Brittain components, I highly recommend Kevin at Porter Strait. We were very pleased with the experience. Sent from my LM-V405 using Tapatalk
  5. I couldnt see this going any other way once the uAvionix patent was granted while the lawsuit was underway. Sent from my LM-V405 using Tapatalk
  6. Thanks for the explanation all! Sent from my LM-V405 using Tapatalk
  7. Can someone tell me what CB stands for on this forum. I see it everywhere, it obviously indicates some variant of a cheap or thrifty individual, but not being able to figure out the acronym is killing me. Sent from my LM-V405 using Tapatalk
  8. I believe Lafayette Avionics has a decent reputation and excellent prices. As such I think they are booked past next summer... Sent from my LM-V405 using Tapatalk
  9. I just recently purchased the SC-5. I cant give a PIREP becuase I havent flown with it yet. For me it was the best compromise of functionality and price. I liked the idea of the interval timer as a reminder to switch tanks. Sent from my LM-V405 using Tapatalk
  10. For legacy Lycomings he recommends in a range 400-420 for cold vs hot day. For legacy Continentals he recommends 380-400, again reflecting cold day vs hot day. For modern aircraft with highly efficient cooling designs, his recommendation reduces by 20 deg for all the above. Obviously these arent exact, the box boundaries are fuzzy, and no sensor (CHT or otherwise) is perfect, but there is presumably appropriate conservatism in these targets. Sent from my LM-V405 using Tapatalk
  11. I'd read some of Mike Busch's magazine articles in the past and understood/agreed in principle, but remained fuzzy on the details (e.g., what defines the boundaries of this box, do I need a map of the box vs power or other flight condition, etc.) as many here, including the OP are. I got to hear Mike talk about all this at Oshkosh this year and it was VERY helpful. He made clear that as far as his reference to the red box goes, it is literally a target/peak CHT that defines the boundary. So that boundary is a function of power first and foremost though there are other factors (cooling =f( density , airspeed)). So the box boundaries can vary a fair amount, even disappearing entirely, in the course of a flight, but the simplicity of CHT being the defining factor is that you dont have to know or even think about the red box or fin boundaries as a function of anything, you just fly your CHTs. If you are less than your target/boundary CHT then you are good, if you are not, then you are not. The idea behind CHT being the critical factor is related to (as a prior post mentioned) it being a good surrogate for internal combustion pressure (ICP) which is what can cause real and relatively rapid damage to your pistons/cylinders. In addition, there are about 6 different specific ways that elevated CHTs can lead to premature cylinder head assembly wear. His target/boundary CHTs also aim to avoid these. I will add that I'm new to the Mike Busch bandwagon, but after hearing him speak at Osh, I immediately bought his book and it is exceptional. Incredibly detailed and educational while also remarkably easy to read. Sent from my LM-V405 using Tapatalk
  12. I'm not sure if this is the same thing, but what about PMA for Brittain components? I know Brittain found a buyer, but it has now been ~9months and they still arent selling components that they were actively producing & shipping before the change in ownership (and passing of the owner). There have to be at least one or two other people that need a step retraction servo boot, not to mention their other components. Sent from my LM-V405 using Tapatalk
  13. Yeah, I was surprised they didnt have swag there, too. This is actually how I found out about the website... I asked one of the sales guys at their setup at Oshkosh and he pointed me to this site. I'm not sure the main Mooney site even has a link to it! Sent from my LM-V405 using Tapatalk
  14. Am I the last one to find out about www.mooneyspeedshop.com? Some great Mooney gear for (mostly) reasonable prices for anyone interested! Sent from my LM-V405 using Tapatalk
  15. Bevan Rabell! I'm packing up some legacy BK avionics to send their way as we speak. Also, for the folks discussing displays... different symptoms are caused by different things: Display suddenly goes out entirely = likely high voltage module failure ( Sent from my LM-V405 using Tapatalk