Recommend not buying the clone if you can afford base ImpulseRC Apex frame. The clone's carbon is low quality and not chamferred. The steel bolts are brittle. The PLA prints suck. They took a good design and made it from the worst materials. That said, it works fine. I've replaced all bolts and 3D printed my own parts.

A list of 3D printables are in the parts-list.

Note to buyers: The front standoffs are 28mm and the rear are 20mm. It's not easy to find 28mm standoffs except on AliExpress.

Apex F7 and ESC stack from ApexFPV is really nice once you find the documentation. ESC's PWM goes to 96Khz, but i've not tried yet. Here is my collection: https://gist.github.com/nerdCopter/ebdc7840a243aa60d6ff9680860ea66b of docs.

I keep moving my Caddx Ratel back and forth between my Screech and Apex. i still need to buy cam :stuck_out_tongue_winking_eye:

Dec 2021:
Repaired a badly cracked arm with JB Weld Epoxy.
Upgraded to BetaFPV nano ExpressLRS 2.4Ghz TX/RX.
Enjoying DalProp T5146.5 V2 as well.

Jan 2022:
BrainWhite/Pidtoolbox discussing one of my BBL (@22:29): https://www.youtube.com/watch?v=14wlm7yhrOY&t=1349s
Here is the log: https://drive.google.com/file/d/1xYA6ug0ZEYdwnw-iqAbDshuuLj47z-eg/view?usp=sharing
Here is the diff / dump, but there is room for improvement: https://drive.google.com/file/d/1SH7vZN4fsQB-5ZGBuguh5I5fi3tWJ_rl/view?usp=sharing

2022/2023
Foxeer Cat 3
New rear arms (Apex OEM)
New bottom front main (Apex OEM)
3D printed a better Session 5 Mount than these pics.