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About JLang

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  1. Max rpm or?

    Well done. I think some of the disagreement is due generalizing “wear” in the discussion. The term W above is normal load, meaning perpendicular to the sliding surface. For some parts this component is relatively small, so additional load doesn’t increase wear much. For parts like bearings, the normal component is the majority, so increased load definitely increases wear. The discussion started with generalities, and “rpm = wear” is a good rule of thumb. “rpm x MAP = wear” is probably more accurate.
  2. New Pilot - Jumping Left on Takeoff

    Don't stomp right rudder as you leave the ground, apply with the throttle. When the throttle goes forward, apply right rudder, whether on the ground, when going from cruise to full throttle climb, etc. Conversely, when you pull throttle, you'll need some left rudder.
  3. New Pilot - Jumping Left on Takeoff

    Moving from the typical legacy aircraft in my training, I was surprised at how much rudder the CT needs with power adjustments. In addition to right rudder at high power settings, you'll probably find that you need significant left rudder when pulling power, such as when closing throttle abeam the numbers in the pattern, or even during descents.
  4. My left wing tip is about 1/2" lower than the right, with even tire pressures, and there is always a few gallon difference between the wings after sitting even a couple hours. As Tom said, uneven pressures definitely makes a difference as well. I learned this early in my ownership when I filled the tanks one evening in preparation for a long flight the next day, and had fuel stains all over the left wing in the morning.
  5. Wheel pants vibration

    So we are hopefully done with significant snow after this week here in the midwest, which means putting the main wheel pants back on. Or not. With them on I, too, usually get a noticeable vibration/flutter at cruise. Checking tire pressure is a pain. I figure it's only a matter of time before I neglect to warn a passenger and they use the fairing as a step. Sure, there is a speed benefit: maaaybe a knot. Admittedly, the plane simply looks better with them on, and this may rule the day, but for now I'm going to leave them off. Am I missing something?
  6. I have the TruTrak installed on my 2006 CTSW.  If you would like to look at the installation or take some pictures, stop by my hangar at Willow Run airport here in Michigan, near Ann Arbor.  Dick Harrison

  7. If you are by yourself, you can just use a floor jack and small block of wood just inside the wheel under the axle.
  8. Grand Canyon Corridors

    If I-FLY is similar to ForeFlight on iPad, the additional detail only shows up when you zoom in on the screen, like with the Terminal Area Charts.
  9. CTLS vs CTSW

    Several other differences, which might be of importance depending on your preference: 1) Cost. For me this ruled out the CTLS, since I could only afford the older, cheaper CTSW. 2) The CTLS has a "hat shelf" behind each seat. For cross country flight, these would be nice. I'm always trying to find more accessible space in mine when flying with a passenger. 3) The larger-screen Dynon Skyview was available on the CTLS (not sure when it was available). 4) I believe there are threads about this topic, but I believe its easier to retrofit a brighter landing light on the CTLS, if you will be flying at night. The stock halogen CTSW light is not terrible, but burns out frequently. The available LED options are not as bright. My night vision is still decent, so this is acceptable, but not ideal.
  10. Meet Cora

    I always feel like I'm missing something when reading these articles. Like Andy says, when you cut through the non-aviation jargon, you are talking about a modern aircraft flying airport to airport, minus the "self flying" part. That exists already -- they are called "airplanes" and lots of people would be happy to fly said airplane for a paying customer (aka, pilot for a charter flying company). Adding "self flying" means adding lots of new, expensive avionics and highly developed and thoroughly tested software to fly it. Since a new Cessna based largely on half-century-old technology starts at $300k, how can an all-new, cutting-edge, self-flying airplane be remotely affordable per mile for any paying customer?
  11. Cold start... again

    I installed a Tanis and it is wonderful, and it is plugged in as soon as the plane is in the hangar, but I am curious what folks use when traveling. For example, tomorrow I hope to fly north for the day, and will be parked outside in maybe 25F temps for several hours. Haul a long extension cord? My limited experience is that most parking spots are pretty far from the actual building. Tape a bunch of hand warmers to the block...?
  12. i have no direct experience with Tecnams and have heard generally good things about them, and others on this forum are more knowledgeable than me, but I will make a few points. I'm calling BS on the idea that composite wings means more turbulence sensitivity. Stiffness is an engineered result of many factors, including materials, but also geometry. If the Tecnam is less susceptible to turbulence it is because of overall design tradeoffs, not simply material choice. Other design tradeoffs are fatigue life, for which aluminum has a definite limit, unlike composite; weight; flexibility of form; and of course wing loading. Same goes for "better in crosswind landings". If so, there are tradeoffs. And I did a lot of searches of the NTSB database before buying my CTSW, and almost all the flips I saw for the CT had to do with hitting something, or "pilot error" landing mishaps. At least, not more than the others I searched. I have the less sophisticated Dynon D100 and D120 (compared to the Skyviews or Garmin 3x), and love them. Cheaper, and so far very reliable. One article I read prior to purchasing my CT is below. It compares not against the 2008, but the Sierra (and Evektor). Still, the conclusion is that the overall preference was the CT, FWIW. https://www.flightglobal.com/news/articles/flight-test-fly-off-evektor-sportstar-flight-design-ct-tecnam-sierra-sporting-heroes-200294/
  13. I decided to get a PPL instead of Light Sport, since I wanted to fly at night, but still went LSA for aircraft choice. It's the only "affordable" way get a modern airframe with modern avionics.
  14. Loud Periodic Creak While Taxiing

    I changed tires and tubes about 4mo ago, and since it was my first time it's entirely possible that special care was not taken. You mean centered laterally, with a section of the bead too far up or down the rim? Would raising the wheel, deflating the tire, and incrementally reinflating while checking position or "roundness" make sense?