Minion

By sindjinn on Sep 09, 2017

4  168  0

This is the latest in the Beatbox & Remix series of frames. Each was fun to fly and quiet, but the pilot (me) made an operator error and broke them. But we can always rebuild - better (maybe) and faster (hopefully) than before.

I designed it in Solidworks then printed it using my Prusa i3 MK2S. Bottom frame is .2mm layer height. The top is .1mm layer height printed with the camera hole pointed straight down to minimize supports. Both have 20% triangular infill.

I was planning to call it Flute, but the first printed prototypes of this 102 frame were made from yellow Hatchbox PLA filament so it was nicknamed Minion. The peach filament is esun PLApro which has a much better layer cohesion than the Hatchbox. Hopefully, that will result in a stronger frame, but I am fully capable of breaking carbon frames so maybe this one is not long for this world.

A note on the FPV camera: Eachine is just pumping these out now so they aren't bothering to focus or glue them together. You'll have to set up a rig to push to sensor cover down onto the board and epoxy them together before installing the camera into your rig. If you don't it will go out of focus almost immediately. They are also not focusing them any more. The lens is barely screwed in most of the time. You'll have to focus them yourself.

update 1: My vtx range for this rig is much better than my previous rigs of this size. It may be due to not having all that conductive carbon around the antenna. It might also be that I removed the shrink wrap from around the end of the antenna so it would fit snugly down the plastic drinking straw.

update 2: As expected, the PLApro bottom plate didn't last more than a few landings. The new bright green frame is PETG, which should have a much better impact resistance.

update 3: The new white frame and canopy are printed from Taulman 910 nylon. The summer dry has turned to fall and winter rain so I have been flying in a old rented aircraft hangar that my flying club rents a couple times a month. The high-power fluorescent lights, concrete floors, and steel rafters were brutal on my build - finding the weak spots in my build orientation, so I have improved as much as I could. The straw is gone, replaced with a PETG vtx antenna tube. The canopy has been doubled in thickness and the span from the canopy to the stack has been doubled to stop canopy strikes. The canopy is now held down with two screws rather than one. Most importantly, the build direction has been rotated to keep the canopy from cracking along the fiber lines.
Also, it is too fast (never thought I would say that) for flying in the hangar, so I have purchased some smaller Gemfan 2030 props to calm it down.

68g with props (as shown)
107g AUW

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