So i started building the wings and sweep servo box. The printed parts came out okay, all i had to do was a little sanding and opened up the holes more. My first attempt for the wings was too weak but i am fairly happy with this set. the wing itself has a fairly small camber, only about 5/8" at the root so getting any strength is a bit difficult. The sweep box works well i just need to swap the linkages for something a little more durable. I weighed the assembly and so far it is 170 grams not bad since CAD was saying 164. But its getting heavy rather fast although this is where most of the structure is.
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I also changed the bottom in the CAD and added a plate to stiffen the fuse. I was a bit worried it will flex between the center "tube" and outer intakes.
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2 questions:
1.) I was planning on using a 6 x 4 prop and grayson hobby supersonic v2 or something similar but am worried i will need to be near full throttle to stay in the air.
https://graysonhobby.com/grayson-hobby-supersonic-v2-flight-pack-deluxe.html I think i can squeeze in a 7" prop in the slot if i modify the intakes to grow half way down the fuse but this will complicate the build. Should i stay the course and run the 6 x 4 or should i make room for the 7" and add a bit of complexity to the intake tubes. Right now i estimate the model will weight 600 - 800 grams adding the 7" also cuts down on the structure between the empenage and the rest of the fuse unless i reinforce it.
2.) I have never tried a taileron hinge like i have shown. My plan is to glue skewers along the leading edges of the control surfaces and then one along the pivot axis between the paper. This skewer will then rotate inside a cut down straw which acts like a housing. I'm not sure what forces to expect on this and feel i may be asking to much out of the skewer hinge. Normally i see this as a carbon fiber rod but i was trying to avoid exotic materials. I am afraid i will get unwanted tendencies with this setup if the forces are to high and the skewers bend to much.
Has anyone had any experience with this type of design?
Thanks!