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Anticept

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Everything posted by Anticept

  1. Fuel Sight Tubes

    Another way: use heat to shape the tube. Though it takes some skill to get right, too much and it melts or burns, too little and it still kinks when you go to put it on. Warning: Keep that hot air gun far away from the fuel tank!
  2. CTSW Service Bulletins

    Flight Design's website is under maintenance. They are normally available here: https://flightdesign.com/service-documents/ Per that link: The Service Documents section is currently under maintenance, please approach Customer Care at customer.care@flightdesign.com to request the documents.
  3. Interesting Rotax engine failure.

    He used a different motor's crank and rods from his own 23 year old engine, and said he didn't know the history of that one.
  4. Heater control Removal

    There's a set screw in the back that holds the cable. You can mark them if you need to so you know where to put it again. The knobs may be glued.
  5. Glide Ratio

    I already did the math. With the idle speeds I typically set (1800), the prop is 740 rpm. That's 15-20% higher over typical settings for other engines. I generally accept an idle RPM of 1800 to 1850. As said, when I saw 1600 rpm, I was surprised. I have a real difficult time keeping an engine running at that RPM for a ULS. They feel like they are going to shake off their mounts and after 20 seconds or so, the RPM drops and quits. I have this happen on several aircraft.
  6. Glide Ratio

    310's are quite a bit different from a CT, and it's why I had asked Tom if he was referring to a CT vs another aircraft. I wouldn't put it past a lycoming or continental being draggy, especially with the size of a 310 propeller since their idle is extremely low by comparison.
  7. Glide Ratio

    You have a really low set idle. I can't keep the engine running for long at 1600.
  8. 406 ELT Antenna Installation

    The purpose of a ground plane is to reflect radiated signals, and comprises the other half of a monopole antenna which is needed to set up the magnetic field. It has a SIGNIFICANT affect on the gain of a monopole. Dipoles do not use ground planes in most cases.
  9. Wiring Diagram

    Please ask flight design USA for it. As they are diagrams not readily distributed, I am hesitant to post them here.
  10. Glide Ratio

    It's slowing down because the prop is loading up. If you think about the air it moves while idling on the ground, what limits the RPM is how much energy you are putting into the prop, which in turn spends it on accelerating the airmass. However, if the airmas entering the propeller disk is already moving, then it limits how much energy the propeller can impart on the airmass. This works the same if the air is moving or the airplane is. The airmass already has energy in it, reducing the amount of energy that can be accepted (laws of thermodynamics). Either the propeller needs to adjust the pitch to compensate (constant speed propellers), or it needs to do something else. In a fixed pitch, this surplus of energy will accelerate the propeller until it comes back into balance with the energy expenditure. The airmass will push the propeller only once there is an energy deficit. That means when the engine is shut down, or there is a large enough energy loss elsewhere, such as higher prop RPM and the subsequent losses from turbulence drag caused by the high speed movement. Now, when I say idle has a bigger affect than one thinks, I am referring to the fact that one might assume there is *no* effect from idle. I'm not going to state in all cases that there is a surplus or deficit of thrust, but often there is a surplus that might give a few hundred feet to a few thousand feet horizontally to a vertical mile. I'd be very interested in seeing more tests, because there's a lot of factors in play, possibpy the most significant is prop pitch and idle settings. Ben29k: autorotation slows the decent because you are trading vertical velocity for rotor disk rotational energy. In turn, as it rotates faster and faster, and due to the absolute sheer size of the disk, you're going to be dumping some of that energy into friction forces in the helicopter and in the turbulent airstream being generated.
  11. Glide Ratio

    Specifically in a CT or in some other type? It's true that a windmilling prop creates more drag when the engine is shut down (the energy from moving the propeller movement is converted to heat due to friction inside the engine), but if it's operating, the engine has to be dumping that surplus energy somewhere. If the air mass is moving faster through the propeller than what the propeller is imparting on it, then this is the same as unloading the prop. So it's going to speed up until the drag comes from something, be it accelerating the air or creating so much trailing edge turbulence... but that trailing edge turbulence doesn't really play a significant factor until at a much higher RPM. Anyways. It would be an interesting experiment to compare.
  12. Glide Ratio

    An idling engine adds more thrust than you would expect. You would have to do this with engine completely shut down.
  13. 100LL questions

    Just tell him his airplane is prettier than he is. It's true but it's like kicking a dog while they are down.
  14. Fuel filter

    The gascolators that are installed are not fully tapped for the drain valve, so it's not run fully down. They barely open when you look at them from the inside, and the o-ring gets cut up rubbing against the threads. I've retapped 3 of them so far and the drain valve works so much better.
  15. TRANSPONDER PROBLEMS

    Transponders are extremely high output devices. Some old trabsponder models in GA would shut down automatically if they were overheating. I doubt the dynon transponder is overheating but still, something to think about. Antenna connections also need to be clean and solid.
  16. Oil Change instructions

    I find 20 revolutions sometimes isn't enough to bring up oil pressure (which confirms the system has been purged of the majority of air)
  17. Oil Change instructions

    Engine crankshaft 20 turns. If you have a 3 blade prop, 60 blades is a good measure.
  18. Dynon slow startup

    Update the software first. See if that helps. Note it could end up bricking it, so be ready to send it to dynon. Do it during the day when tech support is open and ready to recieve calls.
  19. Most cessnas are horrible though. As are piper and mooney panels (older models)
  20. It works fine. Don't do clearcoats for an airplane. They don't stand up well to the environment airplanes fly in, and will look awful after a while. PPG concept works fine as a single stage.
  21. It's an acrylic urethane paint. You can take the top cowling off, clean it up real well, and take it to an automotive paint shop so they can color match. Tell them you are doing touchups. PPG concept was the last paint I used.
  22. It wouldn't surprise me. The CTSW seems to be seriously haphazardly wired, very inconsistent with the wiring diagram. I have one that I work on that is the same way.
  23. Alternator light

    Basically, squeeze them down just enough to where it starts to drag ever so slightly when putting them on and off.
  24. Oil change

    Looks fine. Clean it up real well and put it back in!
  25. Alternator light

    Caused by improper seating / loose connector block / loose AMP connector (the thing that actually attaches to the metal tab). Pop out the connector with a pin extractor, clean it up, make sure there's as little play as possible without actually clamping down on the metal tab, then reinsert it into the connector block.
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