Results 1 to 26 of 26

Thread: Wipaire 2000 lbs gross weight increase?

  1. #1
    Tango Cub's Avatar
    Join Date
    Sep 2005
    Location
    Duluth MN
    Posts
    138
    Post Thanks / Like

    Wipaire 2000 lbs gross weight increase?

    Is the Wipaire 2000 lbs gross weight increase worth the money? At $3600 dollars would you get your money back if you sell it? I am recovering my cub now so it would be the right time it install it, but it the plane has flown just fine without it for 64 years. Is there a safety concern with flying @ 2000 lbs without it? Or is it a Fed thing?
    Life is not measured by the number of breaths you take but by the times that take your breath away

  2. #2
    Steve Pierce's Avatar
    Join Date
    Mar 2002
    Location
    Graham, TX
    Posts
    17,450
    Post Thanks / Like
    Lots flying around without it but guys that fly for a living want it to be legal. Saw a Super Cub not sell because it did not have it. Pretty easy at rebuild, not so much once covered.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers
    Likes wacodriver liked this post

  3. #3
    aktango58's Avatar
    Join Date
    Aug 2004
    Location
    18AA
    Posts
    8,630
    Post Thanks / Like
    Do it.

    As Steve says, when flying it for hire it is a need anymore.
    I don't know where you've been me lad, but I see you won first Prize!

  4. #4
    mvivion's Avatar
    Join Date
    Jun 2003
    Location
    Bozeman,MT
    Posts
    9,855
    Post Thanks / Like
    Let's see, you're flying that recently recovered cub and something happens.....could be most anything, a deer runs out in front of you as you land, a brake drags bad causing a ground loop, someone pulls out in front of you as you're landing, etc. So, the FAA comes to inspect. What do you suppose might be the first thing they say? Let's calculate a weight and balance. And that's when your stock cub has a 450 pound useful load, and your passenger wasn't "petite".

    Buy the kit and install it. No brainer.

    MTV

  5. #5
    Cubswede's Avatar
    Join Date
    Aug 2009
    Location
    Sweden
    Posts
    47
    Post Thanks / Like
    I bought it and will try to install on covered wings.. we´ll see how it works out..

  6. #6

    Join Date
    May 2008
    Posts
    164
    Post Thanks / Like
    I was happy to have it when flying long range in Canada 2008
    C-M
    The wandering raven

  7. #7
    Dave Calkins's Avatar
    Join Date
    Jul 2002
    Location
    Anchorage, Alaska
    Posts
    5,298
    Post Thanks / Like
    I have installed it on a covered airplane. Not so hard to do if the owner can handle seeing a few fabric "repairs".

  8. #8
    hotrod180's Avatar
    Join Date
    May 2008
    Location
    Port Townsend, WA
    Posts
    1,953
    Post Thanks / Like
    Quote Originally Posted by Tango Cub View Post
    Is the Wipaire 2000 lbs gross weight increase worth the money?....
    I think it'd be worth it just to be able to run one of those cool "one ton Cub" stickers!
    Can't seem to google up an image but it's a Cub lifting barbells.
    Seen another I think with a Cub in a biceps pose.
    Last edited by hotrod180; 01-14-2017 at 10:08 PM.
    Cessna Skywagon-- accept no substitute!

  9. #9

    Join Date
    Nov 2013
    Posts
    64
    Post Thanks / Like
    Ill give ya a 1 ton cub sticker for say...1500?
    I haven't stuck mine anywhere yet.

    Install the kit now, hard to do later.
    Thanks jimboflying thanked for this post

  10. #10

    Join Date
    Jan 2007
    Posts
    1,296
    Post Thanks / Like
    I have the STC on my cub but want to put bigger wings on it(will change current wings). Just the parts are half the price for the STC, I am willing to pay that because I am old and may not be here that long, so when I want to sell It is better to have a working cub, than a play cub in the eyes of the FAA. WHAT FLY AND WHAT IS LEGAL THAT IS WHAT MATTERS!!!!
    DENNY

  11. #11
    Cubswede's Avatar
    Join Date
    Aug 2009
    Location
    Sweden
    Posts
    47
    Post Thanks / Like
    Quote Originally Posted by Dave Calkins View Post
    I have installed it on a covered airplane. Not so hard to do if the owner can handle seeing a few fabric "repairs".
    Interresting. I am about to do exactly this. My concern is how much the fabric will pull/displace the ribs that is to be cut. Did you have any problems when you did this job? How many ribs outboard/inboard of the doubler did you open the fabric?
    Did you cut the "H" shape as Mike MCS repair is describing in another thread?

    My wings are cotton, and I will keep the cotton because is is in very good condition. I will be certain to remove all the dope and let the babric "rest" for a while before I do the cuts. Otherwise I believe that the fabric will shrink, and I will have a vey big gap to sew..
    I will also mark all the points where to put the needle through the fabric, to get a "good looking" stitch.

  12. #12
    Dave Calkins's Avatar
    Join Date
    Jul 2002
    Location
    Anchorage, Alaska
    Posts
    5,298
    Post Thanks / Like
    No problems with that at all. I do not rcall what shape cuts I made.

    This was really a simple deal and the parts WipAire provided were first class as expected from those folks!

    knowing that failure mode of an overloaded wing is the rear spar "twisting" followed by buckling, experimental guys can easily beef up the rear spars by installation of stiffening structure to the top rear spar "cap" in any number of ways. Javron's method is simple and lightweight. Also the stiffeners as Piper placed on the Pacer are simple, though nothing like Javron.

  13. #13
    www.SkupTech.com mike mcs repair's Avatar
    Join Date
    Aug 2004
    Location
    chugiak AK
    Posts
    9,199
    Post Thanks / Like
    you cut a wide "H" on top of wing going to the farther away rib to allow sliding stiffener in from that side... do not crease fabric, roll it over some round shipping cardboard tubes and tape in place while you are working

  14. #14
    cubpilot2's Avatar
    Join Date
    May 2003
    Location
    Anchorage Alaska
    Posts
    650
    Post Thanks / Like
    Quote Originally Posted by Cubswede View Post
    Interresting. I am about to do exactly this. My concern is how much the fabric will pull/displace the ribs that is to be cut. Did you have any problems when you did this job? How many ribs outboard/inboard of the doubler did you open the fabric?
    Did you cut the "H" shape as Mike MCS repair is describing in another thread?

    My wings are cotton, and I will keep the cotton because is is in very good condition. I will be certain to remove all the dope and let the babric "rest" for a while before I do the cuts. Otherwise I believe that the fabric will shrink, and I will have a vey big gap to sew..
    I will also mark all the points where to put the needle through the fabric, to get a "good looking" stitch.
    Curiosity is killing me...... how old is your cotton? That went out of style such a long time ago. I have lots of experience with it and loved how you could get beautiful results.
    My concern is that I have seen great looking cotton fabric that wouldn't come close to passing a punch test.
    One area might pass and another would not. (Depended on how well the silver was applied and if hangared.
    If it were mine I would think twice. If you ever want to sell it the cotton will kill the value.
    Ed

  15. #15
    Cubswede's Avatar
    Join Date
    Aug 2009
    Location
    Sweden
    Posts
    47
    Post Thanks / Like
    Quote Originally Posted by cubpilot2 View Post
    Curiosity is killing me...... how old is your cotton? That went out of style such a long time ago. I have lots of experience with it and loved how you could get beautiful results.
    My concern is that I have seen great looking cotton fabric that wouldn't come close to passing a punch test.
    One area might pass and another would not. (Depended on how well the silver was applied and if hangared.
    If it were mine I would think twice. If you ever want to sell it the cotton will kill the value.
    Both wings was recovered in the beginning of the 80:s. Then in 1984 the plane had a slight damage to the left wing tip, and has been grounded since. The wings has been stored in a heated maintenance hangar in an dark area/storage room. I did the strip test methode as per AC 43-13 and the cotton showed as new specification. I thought it would be a unnessesary job of recover them now. It can be done when they get bad for real. a wing recover job also takes some time. And time is not what I have at the moment..

  16. #16

    Join Date
    Jan 2007
    Posts
    1,296
    Post Thanks / Like
    If your wings are ready to fly just put them on and go. Save the upgrade until recover or next repair unless you really need the weight upgrade to be legal. Small projects like this can snowball quickly and take years to get under control.
    DENNY

  17. #17
    cubpilot2's Avatar
    Join Date
    May 2003
    Location
    Anchorage Alaska
    Posts
    650
    Post Thanks / Like
    I am with Denny on this one. Unless you really need the GW increase at this time, go fly.

    You will most likely discover that the 30 year old finish on the cotton will not be very flexible and will tend to "ringworm" or crack easily. The old "rejuvenating" process was designed to extend the life of the finish but isn't worth the labor.
    When it gets ugly then take a knife to it and do the upgrade then.

    Im sure that you have checked; but mice and small birds in storage hangars love to find homes in wings. Rib stitching is very tasty to mice.
    Ed

  18. #18
    hotrod180's Avatar
    Join Date
    May 2008
    Location
    Port Townsend, WA
    Posts
    1,953
    Post Thanks / Like
    A friend of mine recovered the wings on his Luscombe last year.
    The irish linen fabric was in good shape, but the (cotton?) rib stitching was starting to fail.
    So there's to it than just punching the fabric.
    Cessna Skywagon-- accept no substitute!

  19. #19
    txpacer's Avatar
    Join Date
    Jun 2011
    Location
    Iowa Park, TX
    Posts
    430
    Post Thanks / Like
    Since I'm pulling my SC down for a rebuild, I'm thinking about adding the 2k gross weight kit. Mine is a PA-18-135 (L-21B) that has been STC'd up to 1750 lb with an O-320. The AML on the FAA website only says PA-18-150. I called Wipaire, and they say my plane is good for it, despite what the AML says. Anyone have any experience installing this STC on other than a -150 SC?

  20. #20
    Steve Pierce's Avatar
    Join Date
    Mar 2002
    Location
    Graham, TX
    Posts
    17,450
    Post Thanks / Like
    It covers all of them even the 13 rib wings.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers

  21. #21

    Join Date
    Nov 2013
    Posts
    64
    Post Thanks / Like
    Mine is an 18-135 (now with 160) and I put the wipaire kit in 2 yrs ago. Ppwk is good

  22. #22
    Christina Young's Avatar
    Join Date
    May 2004
    Location
    Andover-Aeroflex, 12N
    Posts
    1,600
    Post Thanks / Like
    Me too, original L-21b was 135 now 160... installed Wipaire 2k gross wt kit in 2007...

  23. #23
    txpacer's Avatar
    Join Date
    Jun 2011
    Location
    Iowa Park, TX
    Posts
    430
    Post Thanks / Like
    It looks like I'm going to have a one ton Cub. Thanks for the info.
    Likes Amy liked this post

  24. #24

    Join Date
    May 2006
    Posts
    21
    Post Thanks / Like
    Anyone have pictures of a "post op" wing that had the 2,000 lb mod done on a covered wing? Interested in the H pattern Mike described and what the fabric repairs look like.

  25. #25

    Join Date
    Feb 2006
    Posts
    258
    Post Thanks / Like
    Worth doing, as it make your cub more here in AK for the extra load, and resale value.....but, I never could rap my head around drilling holes in the spare the make them stronger....I know,, I know, it's just in my head.....Scott
    Likes bfd777 liked this post

  26. #26
    Grant's Avatar
    Join Date
    Mar 2002
    Location
    Woodbury, MN
    Posts
    1,563
    Post Thanks / Like
    We will be installing one in a couple of weeks. We will be taking a lot of photos.
    Thanks bfd777, cubnut thanked for this post

Similar Threads

  1. Gross weight increase
    By Frenchy in forum Cafe Supercub
    Replies: 13
    Last Post: 04-22-2013, 06:14 AM
  2. Gross weight increase for PA-11?
    By AviatorPA11 in forum Cafe Supercub
    Replies: 9
    Last Post: 04-01-2008, 04:47 PM
  3. Gross Weight Increase With Edo 2000's
    By Sgt. Rock in forum Modifications
    Replies: 2
    Last Post: 10-21-2004, 11:02 AM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •