The PLA Moose! 1000mm RC plane.

thingiverse

https://youtu.be/td1gsHftiXE The PLA moose is a masterpiece inspired by Mr Burns' Spruce Moose. This is the first rc aircraft design, a 1000mm span aerobatic plane loosely based on geometry from the Yak54. It's still a work in progress, but it flies smoothly and properly. My initial prototype was printed with PLA. Assembly should be fairly straightforward for someone with rc aircraft experience. I use 400 grit sandpaper to sand the mating surfaces carefully. Then I clean them thoroughly with PVC pipe solvent (M.E.K, Methyl ethyl Ketone) and glue them together using a good quality CA adhesive. It features a 16mm carbon spar through the wing and a 3mm carbon brace in the elevator surface. Five 9gm servos are required (align ds410's fit perfectly), but I haven't drawn the mount for the rudder servo yet. I plan to mount it close to the CG and use pull/pull cables thru the holes behind the canopy. The elevator needs two servos, as the surfaces are not connected to each other. A 3536 size outrunner with about 800kv is planned, along with a 4s battery. You'll need CA hinges too, and a lot of patience, since it's a lot of printing! The orientation of the STL files is not optimized! If you're prepared to take on this task, you should be willing to take the time to carefully orient your components for the best results. __________________________________________ UPDATE! It's heavier than I'd like. I'm going to try and strip some weight out of it for the next print. My first build was 1.6kg flying weight! The wing loading is about 30oz/sqf. It still flies quite well as long as you keep the speed up. I think I was a bit ambitious expecting aerobatic performance from this one! My biggest problem was that it's rather tail heavy, and I had to put an enormous battery in it to get anywhere near balanced. A 3536 1050KV brushless motor and a 3300mah 4s battery were used. The next revision will have an asymmetric airfoil to try and generate more lift at lower speeds. To help with CG location, it might be wise to move the elevator servos forward and connect them to the surfaces with cables or long pushrods. If you print one, please upload pics! I'd love to see it! Feel free to edit it and re-upload, but I would appreciate a mention of my original work.