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| Flap Rib http://t18.net/thorpforum/viewtopic.php?f=36&t=9142 |
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| Author: | Ryan Allen [ Tue Jun 03, 2025 4:55 pm ] |
| Post subject: | Flap Rib |
I couldnt get the (6061-T4) flap rib to bend smoothly like it shows in the plans. I shrunk/stretched, bent and cussed all to avail. I ended up putting in relief notches. I dont see why thats not ok. Any reason why not? Attachment: IMG_1990.jpg [ 74.37 KiB | Viewed 2406 times ] |
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| Author: | James Grahn [ Tue Jun 03, 2025 5:04 pm ] |
| Post subject: | Re: Flap Rib |
Have you tried to anneal it? Take a Vis a Vis pen and mark it up. Then take a torch and heat evenly until the ink is burned off. Let air cool. Then it will be pliable again. If you can’t get it to lay down, use a lead slap. To make one, make a tray 1” by 1’ by about 1/4” deep. Melt lead into it. Once cool, use it to slap the flange down. The idea is to hit the whole flange at once. It will actually shrink the metal. Cubes |
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| Author: | Ryan Allen [ Tue Jun 03, 2025 5:08 pm ] |
| Post subject: | Re: Flap Rib |
I didn't try annealing...annealing was next on my list when I decided to put in the relief notches. I will make another rib and try the annealing route. One question about annealing 6061 T4...do I need to quench 6061 T4 after heating or just let it cool down by itself? |
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| Author: | fytrplt [ Tue Jun 03, 2025 6:45 pm ] |
| Post subject: | Re: Flap Rib |
Air cool. Work it as soon it's cool as it will begin to harden within a half hour. |
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| Author: | Ryan Allen [ Tue Jun 03, 2025 8:08 pm ] |
| Post subject: | Re: Flap Rib |
fytrplt wrote: Air cool. Work it as soon it's cool as it will begin to harden within a half hour. Perfect, thank you! |
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