Nano X4 frame
Description
Update 4/21/2021: New version here: https://www.thingiverse.com/thing:4818593 4 inch racing drone frame. > Takes FC with 26.5mm mounting (AIO board) > Arms have 9mm and 12mm motor mounting. > I used 3mm arms and 1.5mm top & bottom plates. > Bottom plate takes press nuts (CNC Madness will install them for $1) I borrowed a couple ideas from Dave_C's Gatehunter frame. The center hole is the same size (10mm) as his, so you can use those bike thingies if you want. Personally, I filled that hole with a simple piece printed in PETG. It'll work without the centerpiece but I like having that extra bit of reinforcement. The canopy should be printed in TPU or PETG. Socks aren't really necessary with a bottom-mounted build so I'm not sure why I included them. My build is using the BetaFPV 20a AIO flight controller with Emax 1408 motors and the HQ T4 props. If you pick up one of these FC's I recommend getting the getting the one with the USB port sticking out the side. You'll need a couple fat rubber bands and a silicone mat (ummagrip) on the bottom to mount the battery. I decided against adding a spot to fit a battery strap on this frame as it would have weakened the mid-section too much for my taste. Once you get used to swapping batteries with rubbers instead of straps it's just as fast.
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