2Fiddy Ultralight 4" 6S

By shALKE on May 10, 2022

4  88  5

Setting up a 2Fiddy Ultralight with a 6s and some beefy motors (I just had extra supply :)), feels like a race quad toothpick.


Part List


Ummagawd 2Fiddy Ultra Light 4" Frame (3 builds)

Flight Controller

Beast F7 55A V2.2 AIO (BMI270) 25.5x25.5 (5 builds)


4 x RCinpower GTS V3 2104T Light 1800KV / 3000KV (2 builds)


HQ Prop 4×2.5×3 V2S (2CW, 2CCW)

FPV Camera

Caddx Nebula Pro Nano Digital Camera (8 builds)

FPV Transmitter

Caddx Vista Unit for DJI Digital HD FPV (No Camera) (90 builds)


Foxeer Lollipop RHCP Micro u.FL (2 builds)


Happymodel 2.4g ExpressLRS EP2 RX Receiver module (50 builds)


GNB 650mAh 6S 120C LiHV Battery (XT30) (2 builds)


TBS Tango 2 Pro - FPV RC Radio Drone Controller (78 builds)


RadioMaster Zorro ELRS Protocol Radio Controller (2 builds)


DJI FPV Goggles V2 (159 builds)

HD Camera

GoPro HERO5 Session (300 builds)

Misc Parts

FETtec Spike Absorber (9 builds)

Misc Parts

NyoGel PG-44A Super Damping Grease (5g Tube) (7 builds)

Radio Module

HappyModel ES24TX Slim Pro ELRS 2.4GHz RC Transmitter Module (4 builds)

Battery Charger

HOTA D6 Pro 325W 15A 1-6S Dual Channel AC/DC Smart Charger w/ Wireless Cellphone Charging (44 builds)

Soldering Iron

Hakko FX888D-23BY, 599B-02 Soldering Station with 599B Tip Cleaner, Blue/Gold (22 builds)
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Madcatmike3d   6 days ago  

Nice! I've built 2 of these 4" versions on 6s so far. They are so damn much fun. I didn't even think about throwing a Nebula Pro Nano in there.. I guess it would be just about as good as any other 120fps cam. I also have a regular 5" 2fiddy built up too, but run 4.5" props on it, and it's just about as good as the 4" versions.

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Madcatmike3d   1 day ago 

Yessir you are correct! Just an arm swap will make it accept 5" props. I run the same exact electronics, except for motors. On my 5" I'm running the NBD Flow 2004 1750kv. Which is pretty perfect for 6s with a 5" prop. I wish I could swap them for the 1850kv ones though, just to get a hair more rpm with the 4.5" prop. Then run a 5-10% throttle cut when running 5" props. But yea, even on 1750kv the 4523 props are awesome. Just makes for an even zippier setup. It's definitely worth trying!

shALKE   1 day ago 

how are the Flow motors? they are really good priced.

Madcatmike3d   1 day ago 

They are AWESOME motors.. I was actually turned off by both how cheap they were, along with how many people were buying them. I know, it's dumb.. I just wondered how good could they be if they're this cheap? and people are probably just buying them because they are the cheapest 2004 available (at the time.) I ended up buying the 8 pack when they were available for $100, and they have been so rock solid. They have boatloads of power on a light 5", and they're efficient and tough. I drove my first 2fiddy face first into the ground, broke an arm, and the motors and wires held up great. I wish that deal was still available! Also running the Tmotor 2004's on another build, and they are awesome too.

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