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  #1  
Old 11-28-2021, 03:52 PM
FlyBoy8's Avatar
FlyBoy8 FlyBoy8 is offline
 
Join Date: Sep 2011
Location: Anaheim, CA
Posts: 56
Default Leading edge rib flanges to 90 degrees

I'm just getting to building one of the leading edge assemblies on my -8 and noticed that some of rib flanges are not at 90 degrees especially near the tip. I can clecko the ribs in but there is a significant gap between the skin and flange on the web side of the flange in some areas.

I try to bend them and they just spring right back to where they were. The ribs have already been fluted as well. I made the flanging tool with 11 degree work faces and that is what i used initially to bend the flanges. I adjusted it to 15 degrees today but the flanges still don't stay bent. They just spring right back to where they were.

Is there any pro tip that might help me in this situation?
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Mike Whaley #83456
Anaheim Hills, CA
RV-8 slow build
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  #2  
Old 11-28-2021, 05:10 PM
MJarreau MJarreau is offline
 
Join Date: Apr 2007
Location: LA (Lower Alabama)
Posts: 352
Default

Mike,

Is the tool you mentioned shown in the following thread?
https://vansairforce.net/community/s...ad.php?t=51247
We built it and used it with great success. When using it, we worked a lit bit at a time and held the lever with pressure on it for a few moments before moving on.

Hope this will stoke an idea for you....

Best of luck!
Mike
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DUES REMINDER: JAN 2023

RV-10
Tailcone: 90%
Wings: In Progress!
Fuse: Ordered
Finish: Ordered
FWF: Ordered
Engine: Ordered
Prop: Ordered
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  #3  
Old 11-28-2021, 05:51 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,102
Default Tool

The tool works. However, if the flanges are fluted, the flanges tend to return to their original angle. Takes some extra tension
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Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #4  
Old 11-28-2021, 05:52 PM
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FlyBoy8 FlyBoy8 is offline
 
Join Date: Sep 2011
Location: Anaheim, CA
Posts: 56
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Yes that is the tool I made and used. Iíve tried more fluting and bending with some success but still not getting nice 90 degree flanges on the curved part of the leading edge ribs.
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Mike Whaley #83456
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RV-8 slow build
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  #5  
Old 11-28-2021, 05:53 PM
Carl Froehlich's Avatar
Carl Froehlich Carl Froehlich is offline
 
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 3,586
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Flute, bend, then flute again.

Carl
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