E-Flite Bonanza 15e Main Gear Trunion Strut and Door

thingiverse

UPDATE: Even with the nose-bleed inducing 75% infill, I still had gear failures. The main issue is the bottle neck where the strut enters the retract. I had to go composite to solve this one. I modeled two 3.1mm holes that go the length of the strut and glued in two 3mm carbon fiber rods. This seems to have done the trick. No gear failures yet with many flights. This is a main landing gear strut combined with the trunion for a E-Flight 10-15 Electric retract design for a E-Flite 15e Bonanza. This particular LG strut has been one of my more challenging projects as the Bonanza is kinda heavy (5-6lbs) and has a high wing loading. This means the main gear takes a beating. I am printing with 3 shells and with 6o% infill to get enough material at the critical section. The Door is largely for scale appearance, so a low infill is fine. The screw holes are sized for M2.5 and you can use 6mm to 12mm length. You will have to supply your own pivot pin. A piece of 6mm aluminum tube will work. You will have to have open up your E-Flite retracts, but that hasn't been a real issue.