Wing STC

[dbudd]

Took the fabric off the wings of my pacer , what a mess I need to totally rebuild. Anybody know if the STC is done to extend the flaps and move aileron out to the tip? (Has Ferguson extensions and tips ) or if anybody has paper work for a field approval now would be the time to do it

[SMO22]

Found the Plane Booster instructions .pdf at supercub.org http://www.supercub.org/forum/attach...8&d=1370715484

[Stephen]

Took the fabric off the wings of my pacer , what a mess I need to totally rebuild. Anybody know if the STC is done to extend the flaps and move aileron out to the tip? (Has Ferguson extensions and tips ) or if anybody has paper work for a field approval now would be the time to do it

There is no STC to extend flaps and move the aileron out. I have worked more than 5 years unsuccessfully on this STC. It would be quite expensive to pay DER to do the work, with little value for the STC. I am looking into the Bushmaster currently.

[Stephen]

The Ferguson STC is a very good modification, similar to most of the current wing tip mods available currently, but is no longer available. I changed the old wooden wing tip rib to a stamped metal rib on my plane. The drooped tip is as effective as the Horner tips. You can add 4 inches to the inboard flap using the X Winds STC. I am not sure what you want to field approve. Control system mods are very difficult to field approve.

[dbudd]

image.jpgimage.jpgThis is what we did with the exp cub. Moved the ailerons in for flaps and added 9.5 " to pa22 ailerons

[Just Call Me Al]

The Ferguson STC is a very good modification, similar to most of the current wing tip mods available currently, but is no longer available. I changed the old wooden wing tip rib to a stamped metal rib on my plane. The drooped tip is as effective as the Horner tips. You can add 4 inches to the inboard flap using the X Winds STC. I am not sure what you want to field approve. Control system mods are very difficult to field approve.

Which stamped metal rib works best with a squared off wing tip extension? Would a butt rib? Or is there a full length rib?
Thank you in advance.

[Stephen]

Which stamped metal rib works best with a squared off wing tip extension? Would a butt rib? Or is there a full length rib?
Thank you in advance.

I used a full length regular rib for the outter rib although, a butt rib should work fine. Make sure you use plenty of angle supports to keep the rib from warping when you tighten the fabric. I would use them on both sides of each spar on upper and lower wing surfaces. You can even double them up by installing a short one then a longer one.

[Just Call Me Al]

Sorry for my ignorance, but that is why I lurk on this forum. Which rib is better? Wouldn't the LH butt rib on the RH wing tip wok best since it is made for the end of the spar? Just trying to figure out the correct application since the product pictures on the Internet catalogs have verying degrees of accuracy. Thanks for the "tip" on bracing or doubling to prevent fabric pulling.

[JPerkins]

Eddie Trimmer supposedly has an STC in process. But its been years so I've no idea where its at. He's done several on field approvals but I got no idea on what that would take.

[Stephen]

Eddie Trimmer supposedly has an STC in process. But its been years so I've no idea where its at. He's done several on field approvals but I got no idea on what that would take.

Last time I talked to him he was not working on this STC. His field approvals were done a long time ago. I would love to see him move ahead on this STC.

Enlarging the flaps and moving the aileron increases shear and torsion loads and the FAA wants these loads accounted for and mitigated and the aircraft tested. This is a lengthy process.