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  #11  
Old 05-08-2011, 05:18 PM
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Av8torTom Av8torTom is offline
 
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Default Maybe Fluting

Thanks for the link Michael. I was actually thinking of fluting the rib webs to help narrow them some similar to what was called for with the HS nose ribs. I will call Vans tomorrow and see what they suggest, cause there ain't NO WAY they're going in the way they are.

T.
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  #12  
Old 05-08-2011, 05:36 PM
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flion flion is offline
 
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Default

I don't recall hearing anyone ever having to flute a wing rib web for any model of RV; I think it would be a bad idea. The forms for those ribs have been used for countless RVs and if there were a problem we'd have heard of it by now. Without pictures, I can't tell what you're really seeing. I know that when I did the leading edges on my -6A the skins took a lot to get in place. Only the skins were drilled so I had to match drill the ribs. Once that was done, however, it was really difficult to reassemble the ribs to the skin. The skin did not want to wrap around the ribs until all the clecos were in place; then I had to go back and re-insert the ones near the nose to make sure they were centered correctly. Dimpling made it better and worse; worse until the dimples locked together and then better after that. I'm betting that after you get more clecos in (with a bit of swearing and forcing) that it will start to look better.

Another thing to check is that you have the right ribs oriented correctly with the right skin. There is a definite L/R and top/bottom to everything and the ribs will not go upside down.
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  #13  
Old 05-08-2011, 05:42 PM
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Av8torTom Av8torTom is offline
 
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Default Thanks

Patrick for your suggestions. Triple checked that I had the correct ribs in the correct orientation. After much swearing I actually DID have everything clecoed together, but that resulted in the bulges on the top and bottom of the leading edge skins. It almost looked like a fabric covered leading edge where you can see the ribs protrude. I won't do anything until I talk to Vans.
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  #14  
Old 05-10-2011, 12:47 PM
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Av8torTom Av8torTom is offline
 
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Default Talked to Vans

yesterday and they suggested that I narrow the nose ribs slightly by bending the first 3 or 4 flanges with rivet holes in them along the top of the leading edge so that they bend off the web sooner (so to speak). This made ALL the difference in the world. Not only are the bulges gone, but the holes lined-up nearly perfectly with little effort. This had the result of narrowing the rib by about 1/16" about 1/4 of the way back from the nose.

Hope this helps others.

T.
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RV-9A (empennage completed, both wings completed, fuselage and finish kit completed, engine hung, working on panel and wiring)
N677AT reserved
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Picture log: http://s271.photobucket.com/albums/j...8tor215/RV-9A/
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  #15  
Old 05-10-2011, 03:12 PM
trackdom trackdom is offline
 
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I had the same problem with my left leading edge ...Riveting was nice but the gap near the leading edge was disturbing me .I suppose a little sanding could arrange it, if I don't sand too much material risking to weaken the skin, wich participates a lot to the stiffness of the wing . As anyone tried to tape it with a rivet gun or back riveting plate?
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  #16  
Old 05-13-2011, 12:10 PM
swixtt swixtt is offline
 
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Default

these are the 3 to 4 flanges from the front of the rib?
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  #17  
Old 05-15-2011, 06:24 PM
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Default Yes

From the nose of the rib.

T.
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N677AT reserved
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Picture log: http://s271.photobucket.com/albums/j...8tor215/RV-9A/
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