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Thread: Inboard flaps

  1. #31
    Stephen's Avatar
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    Default Re: Inboard flaps

    Quote Originally Posted by Steve Pierce View Post
    I am pretty sure Jerry Burr has the VGs on his cuffed wing on his Cub. He is the one who got Micro to look into VGs on our type aircraft and did all the flight testing. He can probably has some insight to their placement on the cuff.

    I have never run out of rudder on a Short Wing Piper, way more effective than my Super Cub. Not sure VGs up the vertical would be a benefit. One thing I have learned about engineers and engineering, there is theory and there is real world. Sometimes they are the same but sometimes they are not.
    Jerry has VG's on both the top and bottom of his cuff. I don't remember about vertical fin. He also has flaps inboard. He lands in 30 feet. His plane in a 100 hp J3.

    Btw, he just finished rebuilding a basket case SC for his wife. It's beautiful.
    "You can only tie the record for flying low."

  2. #32
    Administrator Steve Pierce's Avatar
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    Default Re: Inboard flaps

    We had a long discussion under the wing at Oshkosh a few years ago about the VGs under the wing, automatic transmission fluid etc. I always enjoy visiting with Jerry and I hope to see Becky's Super Cub this next year. Jerry and I have conversed about it a few times and glad to hear they got it flying.

  3. #33
    Stephen's Avatar
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    Default Re: Inboard flaps

    Jerry has done more testing on speed reduction devices than anyone I know. He's one person who doesn't speak opinions. He has detailed data to justify has mods.

    He was looking at my new baffles while back and looked at the piano hinge. He pointed out the air that escapes without doing its cooling. It was a simple fix. To save weight he never used a screw longer than necessary or use extra washers. He counts grams. More of a fanatic than me.....Gilbert?

    Becky NEEDED a SC to finish her ppl.

    I drop in to visit him on my many trips to Skagit airport.
    "You can only tie the record for flying low."

  4. #34
    Glen Geller's Avatar
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    Default Re: Inboard flaps

    Quote Originally Posted by Stephen View Post
    Jerry was looking at my new baffles while back and looked at the piano hinge. He pointed out the air that escapes without doing its cooling. It was a simple fix.
    Hi Stephen,
    Could you share what the fix is for air leaking through the piano hinge in the upper cowl?
    If something was installed to seal those hinges, a photo would be appreciated.

    Thanks,
    GG
    Glen Geller
    1955 PA22-150 "One For Papa!"

  5. #35
    Spdcrazy's Avatar
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    Default Re: Inboard flaps

    Ok I got ahold of Charley. He has a specific STC for inboard flaps. We kind of got side tracked with other exciting possibilities. But he said $800 for the stc and parts. Not exactly sure what it all includes but it was a pleasure chatting with him.

  6. #36
    akflyer's Avatar
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    Default Re: Inboard flaps

    Quote Originally Posted by Glen Geller View Post
    Hi Stephen,
    Could you share what the fix is for air leaking through the piano hinge in the upper cowl?
    If something was installed to seal those hinges, a photo would be appreciated.

    Thanks,
    GG

    A friend told me that gorilla tape works great and lasts for years.

  7. #37
    Stephen's Avatar
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    Default Re: Inboard flaps

    Quote Originally Posted by Glen Geller View Post
    Hi Stephen,
    Could you share what the fix is for air leaking through the piano hinge in the upper cowl?
    If something was installed to seal those hinges, a photo would be appreciated.

    Thanks,
    GG
    A picture would be best. I'll try and remember tomorrow.
    "You can only tie the record for flying low."

  8. #38
    Stephen's Avatar
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    Default Re: Inboard flaps

    How I cut air from escaping above the engine.

    IMG_20210222_100517161_HDR.jpg

    IMG_20210222_100527392_HDR.jpg

    IMG_20210222_100534431_HDR.jpg

    Thin aluminum, bent 90 degrees and riveted
    Last edited by Stephen; 02-22-2021 at 04:37 PM.
    "You can only tie the record for flying low."

  9. #39
    Glen Geller's Avatar
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    Default Re: Inboard flaps

    Quote Originally Posted by Stephen View Post
    How I cut air from escaping above the engine: Thin aluminum, bent 90 degrees and riveted
    The simplest ideas are usually the best.
    Thanks again for sharing good ideas and posting the pics.

    GG
    Glen Geller
    1955 PA22-150 "One For Papa!"

  10. #40

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    Default Re: Inboard flaps

    Does anyone have a picture of the inboard flaps modification, (STC from Charlie) they could share. Best pics would show all three flap positions. Doesn't seem like there's much room for additional flap to me, and I can also see it interfering with the side of the fuselage.
    Thanks,
    -Subsonic

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