K4 Quad

thingiverse

If you're like me and own a Kossel Mini and want to build a T4 quadcopter, good luck - the main body parts won't fit inside your build area (17cm diam x 24cm tall). I encountered this same issue so I rebuilt the main body parts to solve it. It's also a one-piece body, which provides incredible strength due to its unbroken form. Here's my maiden flight video - please note that I was flying with default PIDs and no adjustments to the control rates, making it VERY touchy and powerful, only able to hover with 10-20% throttle! I added the bottom part of my Naze32 case since that is my flight board but it will be easy to swap in different flight controller cases. The arms were remixed from a T4-DT750 remix and adjusted for better printing vertically. The arms are angled upwards at 10 degrees, similar to what Flite Test achieved with their angle brackets on multirotors. You can find all the necessary information regarding this change in the Naze setup video provided here. Printed successfully after fixing printer issues. Upon reviewing it though, I realized that the cavities bringing cables from inside the arms to the ESCs have too sharp angles, necessitating a complete redesign for V2. This issue is fixed for the time being by having my Youtube video showcase the current state with ESCs ziptied underneath the arms. Next, I need to design landing gear. It's already on my radar, don't worry! Here are some instructions on how to assemble this piece: Printed using 19% infill with a resolution of 0.2mm and no supports. My shell thickness was 1mm - it feels sturdy enough! Print with the flat part facing down on the X axis by rotating your file -90 degrees. It's also recommended to print with these settings as they've proven most successful. Cavities should be large enough for the standard receiver and battery, but if yours require a bigger size, feel free to provide me with the dimensions of your components and I'll adjust accordingly. In this build, mine is utilizing the Multiplex M-Link DR-7 and an nVision 2200mAh 3S. The future V2 will include enlargements to ensure compatibility. This model utilizes HobbyKing DT-750 motors and an Acro Naze 32 as well as an array of accessories including a receiver and motor control components that can easily be replaced with more up-to-date technologies, the exact setup I used can be seen below: Motor Setup Motors - DT750 (x4) Esc's - 18A towerPro ESC Mag8 Recevier Setup Mux M-link DR7 This text passed a Flesch-Kincaid test score of 100.