EMAX 250 Quadcopter Arm Replacement

thingiverse

I'm really fond of this arm! Its design is closely based on the original EMAX 250, and with a solid resin print, it weighs in at only 14 grams compared to the 10 grams of the original carbon fiber model. This arm eliminates the need for a spacer altogether :D I made sure to include a handy access area where the arm connects to the quad's frame, so you won't have to unsolder your ESC wires when replacing a broken arm. The wires will fit straight through without any issues, giving you a neat and tidy assembly with minimal fuss. Although it was first created using a Form1, the part shown in the pictures was printed at a resolution of only 200 microns, so I see no reason why it can't be made on many other printer types as well. If you try it, please let me know how it turns out. Print Settings Printer Brand: Formlabs Printer: Form 1 Rafts: Doesn't Matter Supports: Yes Resolution: 200 microns Post-Printing If using an UV curable resin... If you're using an UV curable resin (like the one used in Form1 printers), it's highly recommended that you paint the part to protect it from direct sunlight. Otherwise, the part may become brittle and break easily. How I Designed This Broken Arms When you start flying more aggressively and taking greater risks at higher speeds, crashes will become less forgivable. Even with carbon fiber arms, broken ones will still happen occasionally. Why not try printing your own? They're easy to make, easy to replace, and work great! I designed this arm using a caliper to take measurements off my existing good arms. The thickness and the 2 independent outline ribs were adjusted for strength and weight.