Flex RC Simple X-120 2.5" Vista

By bootbox on May 21, 2020

11  203  2

Huge thanks to Bludz FPV for the canopy design. As soon as I saw the Vista I wanted to put it on a 2.5in or 3in Toothpick style build, his canopy design made it possible. The Vista fits in it very nicely and it made the build super simple. He notes on his Thingiverse page that his stack bolts bent, however I used these M1.6x20mm bolts to secure the stack and they've been great. I've crashed pretty hard a couple of times, once on concrete, no bent bolts yet despite them being very thin.

I was concerned at first there'd be no good place for the Crossfire receiver but it fits great between the top of the flight controller and the bottom of the Vista. I wrapped it in a layer of electrical tape to keep anything from shorting.

I've flown this on 450mAh 3s packs and 450mAh 4s packs, both on stock BF 4.1.1 PIDs with JESC flashed to the ESCs and RPM filtering enabled. On 3s it's fine for cruising around, not quite enough power for freestyle, a little propwash I'm sure could be tuned out. but It was much better on the 4s packs. A tiny bit of propwash if I drop it through dirty air but otherwise super smooth and with plenty of power for freestyle. Completely possible to just cruise on 4s too. I flew the last 4s pack of the day as smooth and slow/cinematic as I could and got 5:00min before landing at 3.5V/cell. Typical mixed flying on either the 3s or 4s 450mAh packs got about 3:30min flight time. Next time I make it to the actual flying field and not just my backyard, I'm going to try some 650mAh GNB 4s packs on it, and maybe a few different 2.5in and 3in props. I'll put up some flight footage if I can manage a few consecutive minutes without embarrassing myself too badly.

The frame is a tank, I love it. 3mm of bulletproof perfection from Flex RC. Love the rubber band battery strap too, simple and light and it works great on micros, combined with some Ummagrip. The build comes in at 99g without a battery.

So far I love this thing. The FPV view is incredible in the goggles. It's fast when I want it to be, handles great, it's easy to fly slow and smooth if you're just chilling, has great pop and hang time for freestyle, it's perfect. Easily my favorite micro build so far.


Part List


Simple X-120 FPV Drone Frame (11 builds)

Flight Controller

BetaFPV Toothpick F4 V3 2-4S AIO Whoop Flight Controller w/ 20A 4in1 ESC - XT30 (4 builds)


4 x iFlight XING Nano X1105 4500Kv Micro MotorDefault Title (6 builds)


HQ Prop 2.5x2.5x3 Tri-Blade 2.5" Prop 4 Pack - Choose Your Color (11 builds)

FPV Camera

Caddx Vista Digital HD VTX Air Unit Kit for DJIDefault Title (11 builds)


Team Blacksheep TBS FpvCycle Minimortal T Antenna


TBS Crossfire Nano RX (4 builds)


Tattu 14.8V 4S 450mAh 75C LiPo Micro Battery (Long Type) - XT30 (3 builds)


LATEST Jumper 2020 T16 PRO Type-C Charge and Folding Handle OPENTX Radio Transmitter PRIORITY US SHIPPING INCLUDED (28 builds)


DJI Digital FPV Goggles - Ultra Low Latency 720p 120FPS Digital HD (46 builds)

3D Printed

Vistapick Canopy - Caddx Vista Toothpick Mount (Prototype) by BludzFPV (3 builds)
See Site

Misc Parts

Flywoo Frame Arm Micro LED Race Wire - Choose Your Size & Color (7 builds)

Radio Module

Team BlackSheep Crossfire Micro TX Module (102 builds)

Battery Charger

HOBBYMATE Duo Lipo Charger Dual Charge Port, Fast Lipo Charger, AC/DC Balance Charger 12A 120-240W W/ AC Power
See Site

Soldering Iron

Weller WLC100 40-Watt Soldering Station (9 builds)


Moore Ideal Products 9512 Metric Speed Tip Set (4 builds)


DroneGuard BP 450 AW
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dafunk   5 days ago  

wow... this thing is so clean it looks as if you bought it :)
also seems easy to maintain

bootbox   4 days ago 

Thanks! I appreciate it :)
I hadn't thought about it but yeah it would be super easy to swap out any of the parts, great point. I probably wouldn't be too excited about a motor swap though, I still can't believe I got the LEDs to work on the first try lol, the pads are ridiculously small

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