RV12 rib fluting
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- Опубликовано: 28 авг 2024
- This video shows the method I developed to flute the ribs on my RV12 experimental airplane kit. The result was a simple, quick, and repeatable method that got rid of the frustrations I was having when I first started. I use the normal fluting pliers, a pair of conventional pliers, a flat workbench, and a magic marker to do the fluting. The advantage is that the process starts at one end and progressively flutes the rib from one end to the other. This was much better for me that using random "a little her, a little there". I can now flute a whole rib quickly and predictably. I hope you enjoy watching.
Alan Gilmore
rv12info.com
Greetings Marv sent us.
Great info, thanks much
I'm building an RV12 and this was very helpful.
SUPER AWESOME Information!!! I hope to be starting my own RV-12 soon. THANK YOU for sharing your valuable building ideas!!!!
It looks like your method works well on the wider ribs. I started doing something like this with my RANS S-21 HS ribs and found that doing one side at a time would get both sides flat, but tended to put a twist in the narrow ribs that was hard to get out. Being an old software guy, I decided to use a binary search type of approach. I flute the center of one side and the 1/4 and 3/4 points and then do the same on the other side. I then flute roughly halfway between those three initial flutes on one side and then repeat on the other. I found this approach to not only be fast, but it prevents the twist that can occur if one side gets too far ahead of the other on a narrow rib.
Interesting. Never thought about using a binary approach...successive approximation. I use it in many other areas of engineering, but never thought of this application. I will try it the next time I flute a rig. Thanks!
@@ansleygilmore I think your approach is fine on a wide wing rib, but I found the 3” or so wide HS ribs gave me fits in waiting to twist as they were flattened if I got one side too far ahead of the other as I removed the arch. Just remember to start with small bites as it looks like nothing much is happening on the first round, but by the time you get a small flute between each rivet hole, it is amazing how flat it will be with just little dimples. Then at the end it is easy to go back and deepen a dimple or two if necessary to get a certain section really flat.
Thank you... This was VERY useful.. I'm planning on starting my RV9 soon...
VIDEO REQUEST.....how taper front HS spars, building an rv8.... thanks for the fluting video
thanks for the help!
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