Gosp.Kliještić

By gugi on Aug 26, 2018

4 161 4

Gosp.Kliještić is an exercise in building a small and light quad: an X3 at 107g without the battery.
The frame is a Storm Moby-X3, a nice quality carbon frame with 4mm base plate and 20mm mounting holes. Comes with a complement of screws, standoffs, damping orings and battery straps.
Moby-X3 supports 11xx and 13xx motors, but for a light build 1105 4000kv motors turned out to be a nice fit.
The downside is that the T style props for those motors require hard to find M2x7mm screws, but luckily they came with the frame.
HGLRC F428 20x20mm stack includes an F4 FC with OSD, 4-in-1 28A ESC and a variable power VTX with a small linear antenna.
The antenna and VTX look underwhelming (UFL connector, small linear antenna) but the video link is performing very well, perhaps even better than my other quads with stronger VTX and CP antennas.
The ESC and the FC are connected by onboard pins/socket, reducing the wire clutter.
I used a bit of epoxy for securing the USB connector on the FC as people reported it tends to break off. Low strength loctite is recommended for small and/or aluminium screws, higher strengths can cause them to strip.
It flies very stable and responsive with default betaflight settings, 5 min flight time drains a 3S 850mAh battery to storage voltage.

Photos

Part List

Frame	Storm Racing Drone Moby-X3 Frame Set (3 (2 builds) Helipal.com	$39.90
Flight Controller	HGLRC 20x20mm Micro F4 Flight Controller AIO Betaflight OSD 5V BEC for XJB F425 F428 Series Flytower RC Drone (16 builds) Banggood.com	$26.59
ESCs	HGLRC 20x20mm 28A BLheli_S BB2 2-4S 4 In 1 ESC Support Dshot600 for XJB F428 F328 Series Flytower (8 builds) Banggood.com	$39.99
Motors	4 x Powerful RCINPOWER G1105 4000KV 8500KV Brushless Motor CW Black White for FPV Raicng Camera Drone Propeller Accessories Aliexpress.com	$47.96
Propellers	Gemfan T Style Polycarbonate 3025 2 Bladed Orange (CW/CCW) (2 Pair) (2 builds) Hobbyking.com	$1.69
Propellers	Gemfan T Style Polycarbonate 3025 2 Bladed Black (CW/CCW) (2 Pair) (3 builds) Hobbyking.com	$1.29
FPV Camera	Runcam Swift Mini 130 Degree 2.5mm FPV Camera Build in OSD PAL/NTSC Orange/Black 22*22mm RC Drone (59 builds) Banggood.com	$34.99
FPV Transmitter	HGLRC XJB TX20 V2 Mini 5.8G 48CH PIT/25mW/100mW/200mW/350mW Switchable VTX Raceband for RC Drone (16 builds) Banggood.com	$26.00
Receiver	OrangeRx R617XL cPPM DSM2/DSMX Compatible 6ch Receiver Hobbyking.com	$10.47
Misc Parts	Ultralight Colorful LED Alarm Buzzer WS2812B Programable for RC Models (10 builds) Banggood.com	$3.12

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Discussion

tetchy Aug 26, 2018

Like the anntenae.

gugi Aug 26, 2018

That R617XL has realy looong antennas, they are responsible for the name (Mr. Krabs from the cartoon)

jakov1 Aug 26, 2018

stvarno jako lijepo izgleda

gugi Aug 26, 2018

hvala!

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