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  1. Dan Thomas

    Who can do Rigging?

    I found most older Cessnas out of rig. Mechanics too often shoot from the hip on this stuff, and over the years an airplane just gets worse as subsequent mechanics change stuff to try to fix previous misrigging instead of reading the manuals and starting over and doing it right. The dumbest is...
  2. Dan Thomas

    C182 Engine Question

    Something wrong there; maybe the whole thing was misplumbed by the installing mechanic. The header is fed from the selector outlet so that either tank can feed. The fuel return is to the header, not either of the mains. The header is vented to the right main tank at the vent crossover tube.
  3. Dan Thomas

    C182 Engine Question

    Yes, that was to prevent the taking off with the selector off. But it also required a separate fuel shutoff (to comply with FAR 23) at the header outlet. The injected 185s were all built like this from the factory.
  4. Dan Thomas

    C182 Engine Question

    As 455Bravo says, a header tank also has to be installed. I did the IO-550 Air Plains conversion in a 180. The 182 would be about the same. There was an awful lot of work to it, including some difficult fuel system plumbing changes behind the firewall. That takes a lot of expensive shop time...
  5. Dan Thomas

    How Many Times Can Cylinders Be Overhauled

    Too many variables. What is the cylinder bore now? Has it been "cleaned up" and standard pistons and rings used, with clearances at or near service limits? Has it been oversized to .010" and oversize pistons and rings installed? Have those cylinders been pressure-tested (same technique as...
  6. Dan Thomas

    Governor signs ban on 100LL into law

    Yes, but he may have taken it from Joseph de Maistre.
  7. Dan Thomas

    I bid none: none dollars

    It's a tube-and-fabric airplane with a wooden wing, also fabric-covered. Burning it would release plenty of toxic smoke from the glues, polyester fabric and the finish coats. Doesn't sound to me like a picnic.
  8. Dan Thomas

    Gauging risk on an old engine

    That air/oil separator also catches and returns water to the crankcase. Not wise at all.
  9. Dan Thomas

    How much CO is too much?

    The muffler, if it's used for cabin heat, needs pressure-checking. Use a clean-out shop vac for the air, and soapy water for the bubble checking. Lots of soap. Too much pressure will blow the soap away and no bubbles will be noted. This will find tiny, invisible cracks. The main gear legs might...
  10. Dan Thomas

    Hard to sell aircraft

    Old wooden homebuilts needing new fabric are hard to sell. Don't ask me how I know. I wouldn't be afraid of an old, long-out-of-production tube-and-rag airplane. In Canada those can be registered as Owner-Maintained, and I can make nearly anything on those airframes. It's old engines that are...
  11. Dan Thomas

    Safety; rules vs freedoms

    It's more than the regs that keep us safe. Understanding subjects like carb ice and its management, and Angle of Attack and how it changes in flight, are examples of the things that kill pilots regularly. I haven't seen a regulation that a pilot must understand these things, only that the...
  12. Dan Thomas

    Compression too high?

    It's not a leakdown. That's a totally different technique. We use the differential compression test, with the difference between the gauge readings being the test result. And we are looking for leaky rings and valves, too. Listening at the oil filler for noise detects ring leakage. Noise at the...
  13. Dan Thomas

    Let's talk turbines for SELs

    It's based on an APU. They make about that much hp. If you want more you need something like an Allison/Rolls Royce C250.
  14. Dan Thomas

    Auto conversion ideas

    Once again: What are your credentials and experience? I don' t believe you have either of them.
  15. Dan Thomas

    Location reporting in magnetic or true?

    Well, not 2000 years ago, but 50. The change in variation there is about 10 minutes per year. In 50 years that's 500 minutes, or a bit over 8 degrees.
  16. Dan Thomas

    Stuck- REALLY Stuck Valves - O-200

    Replying to my earlier post; I was going through boxes of my books and came across the same manual, but from 1973. It has the same stem/guide tolerances as shown above. Note that the O-200's valves are tighter than the C75/85/90's; I suppose one could use the numbers for the older engines as...
  17. Dan Thomas

    Scary High Oil Temps - Lycoming 540

    Yup. Way back in post #13 I said all this:
  18. Dan Thomas

    Location reporting in magnetic or true?

    And by the time he's finished that radio call he's 3.8 miles out.
  19. Dan Thomas

    Continental O-470 proper throttle connection.

    Yes to all of that. The rod end should also not rub on the throttle arm, Sometimes one needs a thin washer between the rod end and throttle arm for clearance. It depends on the lateral angle of the cable, if any, and whether the rod end has a thicker section to its threaded boss.
  20. Dan Thomas

    Continental O-470 proper throttle connection.

    The washer IS tight on the wire at the washer's hole. The whole thing is a bit too tight, as the wire is bent up enough to be scraping on the lever.
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