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Thread: Wipaire 2,000 lb fuselage cluster modification

  1. #1
    Charlie Longley's Avatar
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    Wipaire 2,000 lb fuselage cluster modification

    Does anyone have a picture of Wipaire’s fuselage cluster modification? Thanks!

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    Charlie Longley's Avatar
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    Is this little tube all that gets added to the fuselage?

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    Steve Pierce pic

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    Amy's Avatar
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    Quote Originally Posted by Charlie Longley View Post
    Is this little tube all that gets added to the fuselage?

    Click image for larger version. 

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    Steve Pierce pic
    Yup, that’s it! It reinforces the door cluster. Drop me an email at agesch(at)Wipaire.com and I can send you a helpful reference guide that walks you through the 2,000 lbs. kit components and requirements.

    —Amy
    Proud owner of a collection of airplane pieces (sometimes in one big piece) known as the Oklahoma Kid.
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  4. #4
    Grant's Avatar
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    Are you starting with a 1750 GW Airplane?

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    Charlie Longley's Avatar
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    Quote Originally Posted by Grant View Post
    Are you starting with a 1750 GW Airplane?
    Yes 1962 PA18-150

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    Folks at wip told me the small tube is not structural
    They said it was only put there so it could be easy to identify if their kit was installed
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    Bearhawk Builder's Avatar
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    And you get that cool 'One Ton Cub' sticker!!

  8. #8
    Amy's Avatar
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    Quote Originally Posted by C-YQK View Post
    Folks at wip told me the small tube is not structural
    They said it was only put there so it could be easy to identify if their kit was installed
    I have been trying to figure out where this rumor came from. I’ve asked the team here that worked on the certification and others that have been here 25+ years and they say that is not the case. It is an easy way to see if an airplane has been modified but we are not in the habit of requiring installs of cosmetic items. I went 8 years never hearing this rumor and then three times this year. Would be curious to hear the source and check if their info is different from what I’ve researched.

    —Amy
    Proud owner of a collection of airplane pieces (sometimes in one big piece) known as the Oklahoma Kid.
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    I would call that rumor BS. If I remember right the rear strut has a reinforcement at the spar attachment that is pretty easy to see. I will have to look at mine to be sure I am getting old and only keep so many penguins on the iceberg.
    DENNY

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    amy, werent some of the 2000lb ers on floats breaking or cracking the door frame where that brace is?

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    hotrod180's Avatar
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    Quote Originally Posted by Bearhawk Builder View Post
    And you get that cool 'One Ton Cub' sticker!!
    Who can post a pic of that barbell-pumping Cub?
    Tried to find one online a while back but couldn't.
    Cessna Skywagon-- accept no substitute!

  12. #12
    hotrod180's Avatar
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    Found one!
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    Cessna Skywagon-- accept no substitute!
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    Quote Originally Posted by tempdoug View Post
    amy, werent some of the 2000lb ers on floats breaking or cracking the door frame where that brace is?
    I have not heard of that, but I also am not really involved in the tech support side, so I wouldn’t necessarily know if that had been reported to us. There are more knowledgeable folks than me that handle warranties, tech support, etc. which is a good thing. I’ll ask around though, would be interesting to know. Like everything in life, if you try hard enough you can break anything!

    —Amy
    Proud owner of a collection of airplane pieces (sometimes in one big piece) known as the Oklahoma Kid.

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    Steve Pierce's Avatar
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    Quote Originally Posted by DENNY View Post
    I would call that rumor BS. If I remember right the rear strut has a reinforcement at the spar attachment that is pretty easy to see. I will have to look at mine to be sure I am getting old and only keep so many penguins on the iceberg.
    DENNY
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    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers
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    Thanks Steve! looks like that penguin was still alive and kicking.
    DENNY

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    Charlie Longley's Avatar
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    Quote Originally Posted by Steve Pierce View Post
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    Steve what were these spars and ribs painted with?

  17. #17
    cubpilot2's Avatar
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    A few years ago I was able to discuss this with Jim Richmond of Cub Crafters, and found that he had some first hand knowledge of the testing.

    He as I recall said that a used older fuselage (pre 4130) was used for the drop testing and that there must have been some sort of flexing in this area. Perhaps similar to leaving your rear seat cross over bar out, and have a rough landing. The installation of the tube stopped it and satisfied the Feds.

    They wanted the gross weight upgrade to apply to as many cubs as possible; so I guess you test the “weakest link”.

    Jim said that he used a new 4130 fuselage for their GW increase testing and this issue didn’t come up.
    Ed
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  18. #18
    Steve Pierce's Avatar
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    Quote Originally Posted by Charlie Longley View Post
    Steve what were these spars and ribs painted with?
    That was Polyfiber white epoxy primer.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers
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