Fully 3D printed modular RC Sailplane.
by Walt, published
**** Two files updated 18 May 2013 ****
The two files are the Vert_stab and Fuselage_tail files. A very minor change was made to the vertical stabilizer by removing some material at the bottom of the control linkage channel. I've added a feature in the fuselage tail part to allow trapping the sheath end of the flexible control cables using two set-screws. This prevents having to cement the sheath in place to prevent movement.
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I never created a detailed PDF of the assembly steps, but if I find the time I'll gather all the comments I've made about assembly. The motor I designed around was an old direct drive Astro 05 cobalt. I'm sure you can find a motor to fit the space with even more power. The servos are Futaba FP-S133 from way back, and are discontinued. Compare the dimensions and mounting hole locations when looking for a modern replacement. I used flexible ball type throttle linkage cables for the servos, as there isn't a lot of room in that area. If you aren't skilled at flying, then I'd suggest a seasoned flyer help you check out the plane. Have the person balance the plane for proper CG and balanced wing. I would test glide before powered flight if possible. Post a photo in the 'Made' section, and Good Luck!
I am almost finished printing your plane! (Thanks)
As I am new to 3d printing and RC planes can you help me:
- Is there PDF assembly document (you mentioned doing one)
- what motor-props-servo do I use to fit this plane
Note I didn’t scale it.
Thanks for your answer!
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The wing requires two 1/8" round carbon fiber rods, and one 0.196" square carbon fiber rod for each half. The rod insertion holes will have to be cleaned out with a drill in some cases. To ease sliding the wing panels onto the rods use dry bar soap rubbed onto the rods first. I used a mitre box and hobby saw to cut the brim from the end of the wing panels. The entire assembled wing weighs 12.7 ounces.
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