INTRO
So I have to come clean, I've actually been ripping this guy for about a month, but that's because I put my heart and soul into this design. I usually take a fair bit of time in Fusion 360 getting everything just right, but the first cut is enough most of the time. With the exception of a few minor tweaks here and there, when I order a prototype, it's pretty much what you can expect to get whn you order the real deal.
Well not this time.
I spent WEEKS on this frame, specifically the canopy. Also, fun fact, the 3" Stamina 140 (out soon) was the first one of the series, and then I chopped the arms to make the other two for myself (I don't want a 3" but lots of my buddies do). Anyway, the prototyping stage was extensive this time around, and infact so much so that I delegated all 3" work to a local pilot named Todd Ilgen while I worked with the 2" and 2.5" stuff.

THE BUILD
This build turned out to be actually quite clean and simple excpet for one small issue: my SBUS pin (I used pins instead of wires for the XM+ at first) shorted with the singal wire for motor 2 on the connector on the 4in1 below. Caused some weird stuff in the receiver tab, but I felt dumb once I found it and now it works great. Other than that, like I said, it's pretty easy. I would recommend mounting the ESC and motors and wiring those up, then connecting your RX and anything else that is part of the stack to the FC before you install it. Then, drop in the FC and mount the camera and VTX to get good wire lengths. Cut, solder, and you're off!
This setup is actually really interesting because it's got some serious punch for an 1104 7500kV build, but it's also really controlled. With the 2.5 and 3" quads, I often feel like I gain insane power but lose a lot of the precision and control and hangtime, but this one is a nice balance. I have to be honest, though, the 2" is still my favorite, but that's just me.
I can also confidently say that he can take a beating. I went full tilt into a metal pole (PINNNNNNNnnnnnnnng...) and totally wrecked a motor, but the carbon looks like it did when I took it out of the mailbox on day one. That's 3mm with a good cut for ya!

CONCLUSION
I really, really think you should consider this if you're looking for a 2.5" frame. It's light, strong, and fast as all hell, and I built it with what's probably considered a mediocre setup. Slap some Emax 1106 or RotorX 1105B on here with a 3S or even a 4S pack and you'll get complaints from the neighbors about all your sonic booms in the backyard.

Here's some "meh" footage I took as a proof of concept. It's since been improved and that flickering has gone away (no idea what caused it). I also have flown a lot more than this, I just have a nasty habit of FORGETTING THE SD CARD! -> https://www.youtube.com/watch?v=UON8sizRbZY&t=239s

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