This was a very quick build for a friend who needed a quad to fly for the day. This was a 7” quad that I built about a year ago (https://rotorbuilds.com/build/17366) and now I converted it to a 5”. The one major difference between the v1 and v3 frame is how the arms are mounted. The sunken nuts are placed on X plate, so you are forced to mount the arms from the inside of the frame. You could mount the arms on the bottom, but you will be forced to have screws coming down from the top and that would make it difficult to change the arms. In order for me to slam this setup I would need to run individual ESCs so I can keep the stack height low. That was until I found out that the Pyrodrone 30x30 stack was very low profile. I was able to make the stack under 13mm tall. My other option would be the iFlight 30x30 40a ISO board. But the only problem with that is that it is designed for the DJI system and it lacks an OSD chip. I happen to have both setups on hand so either setups were an option for me.
I keep all the extra 3d printed parts from my previous builds, they are either extras, mistakes or I change my designs. I was lucky enough to find everything I need and did not need to print anything new. Some of the parts did not work perfectly but it was good enough.

For the most part, everything went smoothly, I did not even have time for a test flight until the day of. For being stock BF 4.1.6 tunes, it actually flew pretty well with the XING 2208 2150kv Motors on 5s and Gemfan Hurricane 51499 Props.

Today, I flew it for the first time, and I have lost complete confidence with a non-digital system. I got spoiled with the DJI system that I am not used to flying analog anymore. This might be the very last analog quad that I will be building.

I am 99.9% sure that this will soon be converted to Digital, so stay tuned.