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  1. Thread: Ski Springs

    by BC12D-4-85
    Replies
    12
    Views
    480

    Go fast enough in the cold under air load with...

    Go fast enough in the cold under air load with G's and bungees will stretch and stay that way longer than springs. It's a choice but I want all the tension available all the time. Had Landes 2500's...
  2. Replies
    15
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    470

    I had a previously installed C-180 seat in mine....

    I had a previously installed C-180 seat in mine. Cessna seat rails on the floor and lots of cranks on the seat to make it fit anybody. Heavier than others probably.

    Gary
  3. Replies
    1,403
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    344,375

    And Alaska Airlines still spins it as an incident...

    And Alaska Airlines still spins it as an incident (https://blog.alaskaair.com/alaska-airlines/operations/penair-flight-3296/)

    "Nearly one month ago, PenAir Flight 3296 was involved in an incident...
  4. Replies
    126
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    40,618

    Manufacturers should install and promote the best...

    Manufacturers should install and promote the best wing design with new sales. Do they?

    Gary
  5. Replies
    126
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    40,618

    Dave it may be interesting to play with washout...

    Dave it may be interesting to play with washout and those tips. The wing is changed versus stock and should retain air underneath differently as well. Speed at each end of the range, roll and yaw...
  6. Replies
    28
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    924

    Here's the first pic a little clearer. Looks like...

    Here's the first pic a little clearer. Looks like no exposed wire wrap (good) but I'd compare that hole to the outlet size of the airbox and not have it any smaller. Sharp hole edges, duct wrinkles,...
  7. New anything costs more. Not many can afford them...

    New anything costs more. Not many can afford them and then they have to be taught how to fly.

    Gary
  8. Having owned a -12 and owned/flown some others...

    Having owned a -12 and owned/flown some others I'd give some thought to and get a ride in a fabric wing 170 and Aeronca Sedan. The reason is for the price range you didn't specify but did mention. A...
  9. Replies
    28
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    924

    No expert here and thanks for the pics. It looks...

    No expert here and thanks for the pics. It looks like someone mated an early flat air filter filter airbox to a round filter lower cowl. Others may have a clue about the efficiency of the small hole...
  10. Replies
    28
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    924

    Just for clarity how about taking some pics of...

    Just for clarity how about taking some pics of your filter to airbox to carb from the sides? It might be an interesting setup. If curious push a small rubber hose over the pitot opening then pinch...
  11. Replies
    28
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    924

    I had a PA-18A with the round filter. Memory...

    I had a PA-18A with the round filter. Memory wants to say there was a different exit to the airbox - big square not a small hole. If so what's in Post #1?

    Gary
  12. Thread: flaps

    by BC12D-4-85
    Replies
    8
    Views
    614

    Looks like they may deflect them some on takeoff:...

    Looks like they may deflect them some on takeoff: https://www.youtube.com/watch?v=NObY3f_FyJk

    Gary
  13. Thread: flaps

    by BC12D-4-85
    Replies
    8
    Views
    614

    There's nothing bad about drag airplanes. Lowers...

    There's nothing bad about drag airplanes. Lowers the nose to maintain airspeed. Better than a floater with nothing but lift if short landings required. How much does a perforated flap help lift? Did...
  14. Replies
    2
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    4,751

    I'll bump this up to 2019. I linked one of his...

    I'll bump this up to 2019. I linked one of his comments on scalloped T-50 wings elsewhere. His experience and airplane knowledge is truly a treasure to read and view:
    ...
  15. Replies
    42
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    2,292

    I've been reading and watching some videos about...

    I've been reading and watching some videos about planes and a pilot Jack Dunn from our Greatest Generation. Here's a comment about
    sleeping in a J-5 and fabric wing scallops noted on a Cessna T-50:...
  16. Replies
    126
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    40,618

    Was the overall span increased beyond the stock...

    Was the overall span increased beyond the stock wing or just the trailing edge? Was/is there an STC (STC SA2490WE) or was that just a reference to a particular "style" of tip?

    Gary
  17. Replies
    126
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    40,618

    So there's a couple of examples at least one of...

    So there's a couple of examples at least one of which has successfully flown and proven the concept. Was there a one-time or multi approval? You noted an STC (Thorp?) which has since been withdrawn....
  18. Replies
    126
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    40,618

    Has someone complained about the tips? Looks good...

    Has someone complained about the tips? Looks good from here.

    Gary
  19. Effect of Longitudinal Ridges on the Aerodynamic Characteristics of an Airfoil

    Here's a Cub airfoil with allegedly STOL gadgets. Not sure what to make of all this - I assume they're serious and sober. Reynolds Number of test about 20 m/sec or 45 mph .
    ...
  20. Replies
    33
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    2,274

    Weigh the plane. Gary

    Weigh the plane.

    Gary
  21. Replies
    42
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    2,292

    Any one know if Piper changed the LE on the PA-25...

    Any one know if Piper changed the LE on the PA-25 Pawnee? It might be interesting to find out as they would have had a choice if there was a chance for better performance. Plus they could watch the...
  22. Replies
    42
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    2,292

    Somebody should stick a camera on the Cub tail...

    Somebody should stick a camera on the Cub tail and/or wing lifting rings then go document the upper surface in flight. Might answer some of these questions.

    Here's how they used to do it by...
  23. Replies
    42
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    2,292

    https://www.supercub.org/forum/showthread.php?3645...

    https://www.supercub.org/forum/showthread.php?36453-Extended-Leading-Edge-rib-stitching

    Some earlier discussion and in #17 the linked NACA Tech report from 1927. Time flies.

    Gary
  24. Replies
    10
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    691

    Have a helper handy. Sometimes all it takes is a...

    Have a helper handy. Sometimes all it takes is a gentle push - pull - lift to get the alignment correct to remove or install fasteners. If something doesn't align ask why. If able fix it for now and...
  25. Replies
    42
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    2,292

    Fabric covering moves up and down in flight....

    Fabric covering moves up and down in flight. Under normal load or climb the top and bottom wing coverings move up; in a negative gust they move down. In a stall the lower wing cover is pushed up...
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