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Thread: Flap Viagra??

  1. #1

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    Flap Viagra??

    Installed Airframes PSTOL flaps on the Top Cub and and new PSTOLs have some droop. Told I need a heavy duty return spring,, anyone know the number or source??

    Thanks

    Steve

  2. #2

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    I think I have a handful from when I was working through my flap droop issue. You’re welcome to them.
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    BC12D-4-85's Avatar
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    Waiting for before and after flight test. Never used them but those I know won't give them up. Not much for reports on floats yet. Just one and he said they were ok, but with some comments.

    Gary

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    gntw's Avatar
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    Pistol flaps canít rig up

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ID:	64659[QTwo=stewartb;841493]I think I have a handful from when I was working through my flap droop issue. Youíre welcome to them.[/QUOTE]
    2 different planes both have flaps u canít rig up to ailerons outer hangers in upper flap was not cut out on inboard and out board hangers. Anyone else hade this happen

  5. #5

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    My Keller flaps have two bell cranks and each has return springs. Iíve done lots of adjustments on mine and canít imagine holding mine up without springs on both locations. My flaps are 112Ē so maybe not the same setup as stock length flaps.

  6. #6
    BC12D-4-85's Avatar
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    gntw,
    Can that silver colored adjustment rod be lengthened enough to push the lower flap forward and up into the upper?

    Gary

  7. #7
    gntw's Avatar
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    Quote Originally Posted by BC12D-4-85 View Post
    gntw,
    Can that silver colored adjustment rod be lengthened enough to push the lower flap forward and up into the upper?

    Gary
    no wee tried adjusting the top flap has no cut out . Airframes says they donít send them out that way .some how we got 2 sets different times like that . What are the odds

  8. #8
    BC12D-4-85's Avatar
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    gnaw, ok I now see what's hitting. How now to fix? Cut out LE slots like some pics show?

    Gary

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    Quote Originally Posted by stewartb View Post
    I think I have a handful from when I was working through my flap droop issue. You’re welcome to them.
    Be happy to have them and will cover any cost if you send them up Squarebanks way. You are awesome!!! What was the fix for yours??

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    Quote Originally Posted by stid2677 View Post
    Be happy to have them and will cover any cost if you send them up Squarebanks way. You are awesome!!! What was the fix for yours??
    Long story. The short version is I modified my bell cranks and reduced the number of springs to ease the effort to pull them on. As they are now I’m right at the balance point for staying up or drooping. Any droop goes away at prop start so I’ve left it. Adding another spring makes the pull effort harder and my flaps are hard enough to pull as it is. The springs I believe you want came from Stoddards. They’re what they sell to guys with the STC flaps. My arrangement is different and those springs wouldn’t fit.
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  11. #11
    Steve Pierce's Avatar
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    I would think the Top Cub would have the heavy duty flap return springs. Curious to hear what you come up with.

    I have not installed the experimental flaps but understand the leading edge is not cut out like the certified version.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers

  12. #12
    gntw's Avatar
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    Quote Originally Posted by Steve Pierce View Post
    I would think the Top Cub would have the heavy duty flap return springs. Curious to hear what you come up with.

    I have not installed the experimental flaps but understand the leading edge is not cut out like the certified version.
    I have seen several ex sets and they have cut outs. I was at airframes last airmanís show they said they should have cut outs .you canít rig right with out cut out , we may have to send back but puts plane down .

  13. #13
    Steve Pierce's Avatar
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    It isn't something you can cut out. Tom Ford ran into this as well and who was telling me about it. Is this what is not cut out?
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    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers

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    If it’s a problem created by a manufacturing defect/design I would hope Airframes Alaska would make it right. Best solution would be for them to send you a replacement set and you could send yours back to them after you got the new set.

    I have an experimental set and mounted them prior to covering the wings (which are still not covered). I had no trouble rigging them properly so I assume I don’t have the same issue as you. FWIW the experimental version of their PStol flaps are (when I bought them) built in Scapoose, OR. Certified are built in AK.

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    To be clear, This is the first Top Cub ever built, SN 01, Built by Jim from Cub Crafters. It originally had the Ailerons and flaps connected. This was removed before I came to be the care taker. It is an "Experimental" but has stock cub wings. The Airframes kit I bought is the certified version. They go up, just appears that they may bounce a bit on the taxi roll.

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  16. #16
    Steve Pierce's Avatar
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    Ok, when I hear Top Cub I think of the 2300 lb gross weight certified CC18-180. Sorry
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers

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    skywagon8a's Avatar
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    Quote Originally Posted by gntw View Post
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    Quote Originally Posted by gntw View Post
    I have seen several ex sets and they have cut outs. I was at airframes last airman’s show they said they should have cut outs .you can’t rig right with out cut out , we may have to send back but puts plane down .
    I would not send them back. Just snip out enough to provide the clearance needed. If the edge of the cutout is too floppy for your taste, just rivet in a small reinforcement.
    NX1PA
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    Quote Originally Posted by Steve Pierce View Post
    Ok, when I hear Top Cub I think of the 2300 lb gross weight certified CC18-180. Sorry
    I know... my PA-18 has Top Cub all over the docs but that name went to the CC18 later with the added "Ranger" designation as I recall.

    I thought 83552 was one of the first "Top Cubs"?

    sj
    "Often Mistaken, but Never in Doubt"
    ------------------------------------------

  19. #19
    Steve Pierce's Avatar
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    It is convoluted, and maybe this is just me. 83552 is a Piper PA18-150 with Piper serial number but has the 180 hp engine with several other Cub Crafter's mods via field approval. Jim and Stan built that airplane prior to the STCs. Then there were the Spares and Surplus (data plate Cubs) airplanes which are certified PA18-150 Super Cubs but not Piper production so they have a CC serial number. Then there are the Cub Crafter's type certified CC18-180 which 43CR was serial number 1. Their marketing department did all kinds of things to help muddy the waters.
    Steve Pierce

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  20. #20
    hotrod180's Avatar
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    Quote Originally Posted by stid2677 View Post
    To be clear, This is the first Top Cub ever built, SN 01, Built by Jim from Cub Crafters. .....
    I looked up your tail number once out of curiosity about this whole "Top Cub" thing.
    It is registered as a JR-1, mfr'd by Jim Richmond in 1989, s/n 01.
    So not a "Top Cub".
    Cessna Skywagon-- accept no substitute!
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  21. #21

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    Quote Originally Posted by hotrod180 View Post
    I looked up your tail number once out of curiosity about this whole "Top Cub" thing.
    It is registered as a JR-1, mfr'd by Jim Richmond in 1989, s/n 01.
    So not a "Top Cub".

    Thanks for the info,, just going by what I was told from my partner who bought it from Mr Jim. They both have passed now and I sure miss my friend. The story told to me was, my friend bought a set of JS Smith EDO amphib floats and pursued Mr Jim to buy this Cub specifically because of the GW, it could legally fly these amphibs. Just trying to keep it safe under my care,, I fly my friends and family. One day I want my family to share an old photo like this and this Cub to still be putting smiles on faces. This photo was in the 1980s. I still have the operational floats as well.

    [COLOR=rgba(0, 0, 0, 0.87)][/COLOR]
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  22. #22
    RaisedByWolves's Avatar
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    Quote Originally Posted by Steve Pierce View Post
    It isn't something you can cut out. Tom Ford ran into this as well and who was telling me about it. Is this what is not cut out?
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    Yes on the exp 3 hangar flaps they didnt cut out the section like they do on the certified flaps, i assume for ease of building, using a one piece leading edge skin
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  23. #23
    BC12D-4-85's Avatar
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    How do they expect them to work w/o some clearance from the hangers?

    Gary

  24. #24
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    Quote Originally Posted by BC12D-4-85 View Post
    How do they expect them to work w/o some clearance from the hangers?

    Gary
    Thatís not there problem, itís the installers.
    If you order 3 hanger flaps make sure they have the cutouts on all hinges. They said itís a problem with some cubs but the old ďweíve never seen that beforeĒ just like the strut problem.


    Sent from my iPhone using Tapatalk
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  25. #25
    BC12D-4-85's Avatar
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    New part of the kit?

    Gary
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    hotrod180's Avatar
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    Don't forget the paint brush -- "beat to fit, paint to match".
    Cessna Skywagon-- accept no substitute!
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  27. #27

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    FWIW, my exp Keller (Oregon) flaps have the LE cut out at all 4 hangers, even at the two that donít have drive rods.
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  28. #28

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    Why do the hangers without drive rods have adjusters? Mine don’t.

    Last edited by stewartb; 02-20-2023 at 01:53 PM.

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