The story behind the build

This bulid evolved from my Black KISS build (https://rotorbuilds.com/build/27966).
Here I actually planned already to use the Karearea TOA 2207 1980 KV Bi-Turbine motors, which wheren't available at this time.
After I got some, I had to update!
But with my Black KISS, I had bad problems in the meantime.
Overall it flew great, but it still had some twitches and uncommanded movments, what scared me.
I blamed the FC and/or ESC to be the problem, but I think I was was wrong...

Choice of components

The motors were already specified.
Than I really fell in love with this Holybro 65 A metal-monster ESC, so I want one.
The videosystem and the frame where the only things, I took from my old build.
For the FC I wanted a iFlight F7 with dual-gyro, because I already have one (mini) running and I love it.

Building

This build was a bit boring, because I already made it once.
To complicate it a bit, I tried an upside-down mounted ESC, to have a special wire routing.
The mount of te Immortal T at the back turned out to be useful, so I did it again.
I didn't really like the cage for the cap and spike absorber, like I had it before. That's why I removed it and outsourced the component's into the back of the copter.

Flight quality

Well, it flies good...but I had the same problems (more or less) than before - uncommanded movements!
After some research, I'm pretty sure the problem is the frame or more it's vibration characteristics.
Find the answer here:

With a little bit more (precise) filtering, it flies good, but not that great what I expected of a quad, built of top notch components.

The Karearea motors also where a bit disappointing. The look worthy, got a lot of power (max. 3400 W for all four acc. to BF OSD) and work great. But two of five had a noticeable bearing clearance out of the box.
In BF these motors show acceleration forces > 1 g. Not really what I expect from a premium motor.

Update:

I found out, the bearing play is caused by too little axial prestress on the bearings.
So I shortend the drive shaft by some µm and now the motors are running perfectly smooth, without any play or additional heat generation.

Data

Weight with props: 433 g
AUW with 6S 1050 mAh: 613 g
AUW with 6S 1400 mAh: 659 g
Flight time (1050 mAh): approx. 2:30 to 4:30
Flight time (1400 mAh): approx. 3:00 to 6:00
v_max: 175 km/h (straight flight, with constant altitude)