By silkysmooth3215 on Feb 20, 2018

8  678  5

This little guy I must say is simply a flying powerhouse. Now that it is winter I sit inside and fly it FPV around my trees in front yard. Simply a flying blast. To get it flying at its absolute finest there were several routes I had to take in order to accomplish this. First off, applying Betaflight 3.2 was an improvement until I got hot motors when using Dynamic Filtering, which I have working on all my builds with great results. Four things I done to eliminate the hot motor issue. First, soft mount motors, next was to get rid of the VTX mounted directly on top of the F3 flight controller. Not good. In order to separate the VTX from flight controller a 3d print was made to apply the VTX. The next thing was to reduce the height of the stack now that it was too high. In order to accomplish this while soft mounting the flight controller, all eight standoffs had to be modified. They were shortened by approximately 2 mm. Once all this was done, took it out for a test flight without hot motors, now it simply scoots when the throttle is applied. No messing around getting around those trees now. Flies incredible, almost like my 5" builds. Thanks for looking at my build.

Been messing around with the Betaflight tunes, was not getting that locked in precision feel on the sticks. I adjusted the SetPoint Weight to .05 and whoa what a difference it made. Simply incredilble, now I can fly at speed merely inches off the ground with ease. No oscillations whatsoever. Flies nearly perfect. I loved this 120 mm racer so much I built another with two backup frames just in case. Using a 3s 70c 650 mAh battery easily get 6 mins of hard flying flight times. Extremely efficient setup


Part List


Leader-120 2S Fpv Micro Drone Racing Quadcopter Frame Kit - $12.52 |GearBest.com (4 builds)

Flight Controller

FSD328 28A F3 Flight Tower


4 x FSD 1104 7500KV Brushless Motor (8 builds)


GEMFAN 24pcs Flash 2540-3 Propellers 2.5x4.0 Inch Triblade Props 3-Blade Compatible with 1104 -1105 1106 FPV Mini Racing Motors (171 builds)

FPV Camera

RunCam Micro Swift 600TVL 2.1mm/2.3mm IR Blocked 1/3 CCD FPV Camera PAL/NTSC 5.6g for RC Drone (192 builds)

FPV Transmitter

Eachine VTX03 Super Mini 5.8G 72CH 0/25mW/50mw/200mW Switchable FPV Transmitter (417 builds)


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


XF Power 11.1V 550mAh 3S 70C Lipo Battery XT30 Plug


FrSky 2.4G 16CH Taranis X9D Plus Transmitter SPECIAL EDITION w/ M9 Gimbals (48 builds)
See Site


Fat Shark Dominator HDO 2 FPV Goggles (70 builds)

HD Camera

GoPro Session (62 builds)

Misc Parts

Eachine Lizard 95 motor guard soft mount 1mm by GRay_111111
See Site

Misc Parts

Search Thingiverse - Thingiverse
See Site

Video Receiver

ImmersionRC rapidFIRE w/ Analog PLUS Goggle Receiver Module (179 builds)

Radio Module

FrSky R9M Transmitter Module (69 builds)

Battery Charger

iSDT D2 Smart Balance Charger (11 builds)

Soldering Iron

Weller WES51 Analog Soldering Station


Lowepro QuadGuard BP X3 - Drone Backpack for 4 FPV Quad Racing Drones and 15" Laptop w/Exterior Mounts (Black) (24 builds)
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scirocco   Oct 22, 2022  

best quality part from Leader120? Are motors and frame! I am using them many years long time without problem! And use them into many different build! 2S-3S-4S or 2 inch 2,5inch 3inch!.... and crash them many times..... motors are working and working without tipical chinese brushless problem example brake shaft or lose rotor bell from motors! It had been a good deal 5years ago :)

vin89423   Dec 06, 2018  

Hello, Seem your flight controller is the same model as mine.

I having a problem on Camera and VTX connection.
My Video receiver can only show black screen, I wonder if i connect it in wrong way.
The picture is my current wiring, did i connect it wrong ?

Please help. Thanks a lot.

silkysmooth3215   Dec 07, 2018 

Sorry, I no longer have this board. Upgraded since.

Aliosion   Dec 17, 2018 

Most likely you are not getting enough current from the FC to the VTX to power the camera.

Try powering the VTX directly from the lipo pads on the ESC if your VTX can take 2 to 3s voltage.

vin89423   Dec 17, 2018 

Thanks for your reply. You are right about the power. My solution is wire the camera to FC directly.

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