By nic4wtf on Nov 30, 2019

9  292  6

In development

My next kwad project. This quad is to be used in freestyle and close-proximity flights.
Intended to use with a 30.5mm FC + 4in1 ESC double stack, just enough room for the rx, vtx and antennas.
I've included mounting for 20x20mm as well but still haven't found an attractive option (pretty difficult to compete with the Mamba stack).

Exploring a bit on the quad + configuration, I'll be using the same arms that I've been using on other designs.

At this moment still retouching the CAD but looks like it won't change too much.
Still in doubt if I should switch to 6s or just keep flying 4s for freestyle.

Feedback always appreciated, let me know what you think!


Part List

Flight Controller

MAMBA F405 MK2 Betaflight Flight Controller F40 40A 3-6S DSHOT600 FPV Racing Brushless ESC (87 builds)


4 x RCINPOWER GTS-V2 2207Plus 2207 2500KV 4-5S Brushless Motor for RC Drone FPV Racing


2 x 2 Pair DALPROP T5045C Cyclone 5 Inch 3 Blade Propeller Clover Prop Black Red Orange Green (198 builds)

FPV Camera

Caddx Turbo Micro F2 1/3" CMOS 2.1mm 1200TVL 16:9/4:3 NTSC/PAL Low Latency FPV Camera W/ Microphone (38 builds)

FPV Transmitter

AKK FX3 5.8Ghz 37CH 25/200/400/600mW Switchable FPV Transmitter VTX with MMCX Integrated OSD FC (2 builds)


Realacc 5.8G 5dBi 50W Omni Directional Omni FPV Pagoda Antenna LHCP/RHCP SMA/RP-SMA For FPV RC Drone (53 builds)


Frsky XM+ Micro D16 SBUS Full Range Mini Receiver Up to 16CH for RC FPV Racing Drone (1407 builds)


CNHL MiniStar 14.8V 1500mAh 4S 120C Lipo battery XT60 Plug for RC Drone FPV Racing (11 builds)


FrSky 2.4G Accst Taranis Q X7 16 Channels Transmitter Remote Controller White Battery and Battery Trays Not Include (217 builds)


FatShark Dominator V3 RTF Bundle FPV Goggle with OLED Receiver Battery Case for RC Drone (56 builds)

HD Camera

GoPro HERO5 Session (196 builds)

Radio Module

FrSky R9M 900MHz Long Range Transmitter Module for FrSky R9 Series (69 builds)

Battery Charger

ISDT Q6 Pro BattGo 300W 14A Battery Balance Charger (41 builds)

Soldering Iron

TS100 Ltkolben KIT + TS-I inkl. XT60 Kabel (161 builds)
Show stores (4)


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StickyRice   Dec 02, 2019  

i wish that motor protection at the back was straight rather than to the left ahhaha. BUTT IT LOOKS SO COOL DUDE. reminds me of batman!! any estimations on weight?

nic4wtf   Dec 03, 2019 

Hahaha! The same, I was just using my standard arm design to get the mounting holes placed properly, the final version will have an arm with symmetric motor protection on the front and on the back (but still be able to use this old-style arms)

I was impressed how cool the frame looks, so excited to see it fully built!

The frame and the frame-screws/standoffs should be around 125g.

StickyRice   Dec 03, 2019 

dude thats pretty unique!! also if you wanna do a step further....why dont you try vertical arms too? in that config, it has less drag in any camera angle!! tho would need beefing up! Looking great!!

nic4wtf   Dec 03, 2019 

Interesting! Will have a look on that!

FPVisioning   Dec 02, 2019  

What are the benefits of this style vs the usual arm style?

nic4wtf   Dec 03, 2019 

I believe flight characteristics should be pretty similar to a regular X quad, I was curious about this config, so I'm starting with a simple +

About the arms position, I used an optmization algorithm to define the angle of the side arms.
I also had the reinforces slightly curved just for the visuals, haha, straight should have been better and lighter

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