Butt Rib install problem

[jmodguy]

Do NOT move the #1 rib position from the plans. This rib supports a hinge point. I sanded a notch in my butt rib with a dremel tool. This makes the rear spar bolt easy to insert. It will eventually be covered by the skylight.

[Flyboy66]

Do NOT move the #1 rib position from the plans. This rib supports a hinge point. I sanded a notch in my butt rib with a dremel tool. This makes the rear spar bolt easy to insert. It will eventually be covered by the skylight.

Do you have a picture of yours?

I would like to see how the Butt Ribs look installed, so anyone feel free to post a picture.

[Dave S]

Steve,


On our early S7 - I trimmed the capstrip by the rear spar to provide relief for the bolt. If I recall correctly, the front capstrip didn't interfere with the pin; however, my buttribs were made a few years ago and may have had a slightly different length on the capstrips.


The buttrib is not structural to the wing and a little trimming isn't a problem and won't affect the windscreen mounting. As others have mentioned - location of of the wing ribs is very critical.


Sorry, no photos over here of this.

[aviator79]

These are the best I have. I'd take some for you right now, but they are masked off for paint. I think trimming the butt ribs is the way to go.

[avidflyer]

I think I understand what your problem is now. First of all, the inboard rib on the wing (#1) should go where it's supposed to go so the flaperon hinges work out. No problem trimming off some of the butt rib cap strip ends so the bolts clear. Your windshield attaches to the butt rib, but if the last 1/2" of the cap strip isn't there, that should be no problem. JImChuk

[Flyboy66]

These are the best I have. I'd take some for you right now, but they are masked off for paint. I think trimming the butt ribs is the way to go.

I know this is a personal question, but do you have a problem? It appears that you might have a clamp addiction. Not being judgemental, just looking out for you.

[jrevens]

Locate your ribs at the exact dimensions shown in the manual. As others have said, you trim the cap strip(s) as necessary to allow the bolts & pins to be installed. No problem.

[aviator79]

If some clamps are good, more are better!

[Flyboy66]

If some clamps are good, more are better!

Anything worth doing is worth over doing!