Red-Black tree

By baze_fpv on Apr 30, 2019

12  584  0

I wanted to build 3" quad based on Dialeksi's AC3 -frame ( and have a theme color of Red and Black.

I designed and 3D printed spray painting template for the frame and also designed mounts for the Frsky r-xsr receiver and mount for Eachine TX805 VTX.
Custom VTX mount and shorter standoffs allowed me to make the whole frame 2-3mm lower and make it slimmer.

This frame is flying super smooth with these parts and BetaFlight 4.0 (default PIDs)!!! Really loving it :heart_eyes: .

Technical details

  • HD video via RunCam Split Mini 2
  • Smartaudio used to control the VTX
  • Full telemetry received from the Frsky R-XSR.

Custom 3D-parts

  • VTX mount to top plate
  • R-XSR receiver mount to back standoff (as close to antennas as possible)

3D-printed parts that came with the frame

"A red–black tree is a kind of self-balancing binary search tree in computer science." -



Sign in to comment

Guides & Reviews

60 5,305  52
Aug 26, 2020

For the longest time we've been limited to 3 to 4 minutes of flight and lots and lots of batteries. With more efficient motors and frame designs it's now possible to push the envelope much further. This guide will walk you through the process of building a micro long range quad capable of flying 8-30 minutes and more than 4km. The build is moderately difficult, but with the right tools and steady hands..

Read more
36 2,800  20
Jul 20, 2020

Until recently GoPros were delegated to larger quads. A typical GoPro weighs around 125g and we've only recently begun to mount them on 3" cinewhoops. Even that is a stress on the motors. Now we've got the "GoPro Lite". Remove the battery, displays and casing and you're left with a small, lightweight board and sensor. Wrap it in protective TPU casing and you've got a 30g micro GoPro. The Hero6 is..

Read more