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05-08-2011, 05:18 PM
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Join Date: Nov 2009
Location: Yardley, PA
Posts: 1,334
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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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05-08-2011, 05:36 PM
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Join Date: Dec 2007
Location: Flagstaff, AZ
Posts: 2,653
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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.
__________________
Patrick Kelley - Flagstaff, AZ
RV-6A N156PK - Flying too much to paint
RV-10 14MX(reserved) - Fuselage on gear
http://www.mykitlog.com/flion/
EAA Technical Counselor #5357
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05-08-2011, 05:42 PM
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Join Date: Nov 2009
Location: Yardley, PA
Posts: 1,334
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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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05-10-2011, 12:47 PM
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Join Date: Nov 2009
Location: Yardley, PA
Posts: 1,334
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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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05-10-2011, 03:12 PM
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Join Date: Sep 2010
Location: salon de provence France
Posts: 179
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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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rv8
First flight february 11 th 2016 , delightfull....
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05-13-2011, 12:10 PM
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Join Date: Oct 2008
Location: CAD
Posts: 249
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these are the 3 to 4 flanges from the front of the rib?
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RV9.... Tail done. Inspection done! Wings pre-cover MDRA inspection done. Closing them up now. Fuse underway.
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05-15-2011, 06:24 PM
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Join Date: Nov 2009
Location: Yardley, PA
Posts: 1,334
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Yes
From the nose of the rib.
T.
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