AlphaRC Apache 5 aka GEPRC KHX5

By CrossBlades on May 13, 2022

2  31  0

Hey dudes,

I wanna share you my 2nd quad build. Unfortunatelly I lost my first copter due to lack of awareness ;- ) but everyone learns from mistakes!

Just a few things about the used components:

Frame:
This one is an AlphaRC Apache5 frame which is a GEPRC KHX5 clone. AlphaRC made really a great job with this frame. The carbon parts are really high quality with rounded edges. I got the frame with a few spare parts and 3D printed dirt protectors for both sides.
The front cage ist very robust and can hold any size camera (with adapters). I also put the Vifly finder in the front, behind the DJI camera, where is a lot of space.

FC & ESC stack:
In this build i used the Lumenier LUX F7 Ultimate FC with a T-MOTOR Pacer P50A 4IN1 ESC. I like this combo because of a good quality/feature to price ratio.
The Lumenier FC has a switchable VBAT pad to power the CADDX Vista I used as VTX. This has the great benefit of remotely switching OFF the Vista in case of a crash before it overheats during hours of quad-searching xD.
The ESC has enought power for 6S build and a great quality (and is BLHELI32).

Motors:
T-Motor F60 Pro IV ... run like a fu%$ing turbine

VTX:
Caddx Vista with DJI cam... nothing more to tell about ;-)

Buzzer:
Vifly finder V2...just loud

GPS:
Beitlan BN220 works great so far.

Remote:
TBS Tango 2 with custom LUA script for logging GPS data. This is really a great feature to find your lost quad. The script not just loggs the GPS data during flight, you can also display the latest coordinates send from the quad on the Tango 2 screen. After the flight you can review your flight with importing the GPS log into Google Earth.
https://github.com/moschotto/OpenTX_GPS_Telemetry

Insta360 Go2 Mount:
I designed a flexible soft-mount for the Go2 to avoid jello in the videos. This works pretty well in combination with the amazing Insta360 stabilization to get great cinematic shots even with a 5" freestyle quad.

The rest is mostly 3D printed --- see link to Thingiverse
https://www.thingiverse.com/thing:5384231

About the wiring:
I tried to avoid routing wires above the FC, but it's nearly impossible with this build. Nevertheless the oscillations are fine. I used also a 470uF cap on the power lines, placed near the buzzer. The power lines exclusively go throught the 2 top frame layers which works pretty well.

I used conformal coating for the whole electronics to make it waterproof. Successfully tested this so far during an unintended 10m drop into snow.
You can see the coating on the pics - maybe i was a little bit overenthusiastic with this ;-)

Photos

Part List

Frame

AlfaRC Chamäleon 5/6/7 zoll Carbon Fiber 230mm/260mm/290mm Radstand Rahmen fpv Quadcopter Racing Drone
De.aliexpress.com
$15.51

Flight Controller

Lumenier LUX F7 Ultimate Flight Controller (Dual Gyros) (33 builds)
Getfpv.com
$79.99

ESCs

T-Motor ESC Pacer P50A 4IN1 kaufen | FPV24.com
Fpv24.com
$86.51

Motors

T-Motor F60 PRO IV V2 - 1750Kv (4 builds)
Drone-fpv-racer.com
$28.41

Propellers

Heißer Verkauf 10 Paar Racerstar V2 5048 5x 4,8 x3 3 Klinge Racing Propeller 5,0mm Montage Loch für FPV racer
De.aliexpress.com
$24.58

Propellers

DALProp Nepal N2 T5142.5 Freestyle Propeller (Set of 4) (2 builds)
Getfpv.com
$2.99

Propellers

20 stücke/10pairs iFlight Nazgul F5 5 zoll 3 klinge/tri klinge propeller prop mit 5mm montage loch für FPV Drone teil
De.aliexpress.com
$18.25

FPV Camera

Caddx DJI Digital HD FPV Camera (160 builds)
Getfpv.com
$64.99

FPV Transmitter

Caddx Vista Unit for DJI Digital HD FPV (No Camera) (90 builds)
Getfpv.com
$99.99

Antenna

Caddx Vista Antenna - Choose Your Length (10 builds)
Racedayquads.com
$8.00

Antenna

TBS CROSSFIRE IMMORTAL T V2 ANTENNA (113 builds)
Pyrodrone.com
$5.95

Antenna

Foxeer Lollipop V4 5.8GHz SMA Antenna 2 Pack - Choose VersionRHCP / Black (6 builds)
Racedayquads.com
$19.90

Antenna

1PC/2PCS/3PCS HGLRC Long Range Hammer Mini RHCP/LHCP 5.8G 2.5dBi Super Mini FPV Antenna For FPV Racing RC Drone (5 builds)
Usa.banggood.com
$10.99

Receiver

TBS Crossfire Nano Rx - FPV LONG RANGE DRONE RECEIVER (1289 builds)
Team-blacksheep.com
$24.95

Batteries

2PCS CNHL 6S 22,2 V Lipo Batterie 1250mAh 70C Ministar Serie Mit XT60 Stecker Für RC FPV quadcopter Flugzeug Hubschrauber Drone
De.aliexpress.com
$56.23

Radio

TBS Tango 2 - FPV RC Radio Drone Controller (32 builds)
Team-blacksheep.com
$159.95

Goggles

DJI Digital HD FPV Goggles (125 builds)
Getfpv.com
$529.00

HD Camera

Insta360 Go 2 180° 3K Action Camera (3 builds)
Pyrodrone.com
$299.00

Hardware

1060 stücke M2 M3 M4 M5 Hex Buchse Schraube Set Stahl Flache Runde Kappe Kopf Schrauben Schrauben und Muttern sortiment Kit mit
De.aliexpress.com
$20.42

Misc Parts

Ummagawd UMMAGRIP Universal Super Sticky Battery Pad (169 builds)
Racedayquads.com
$4.99

Misc Parts

Beitian Dual BN-220 GPS GLONASS Antenna Module TTL Level RC Drone Airplane (67 builds)
Banggood.com
$18.99

Misc Parts

ViFly Finder 2 Buzzer - Lost Drone Finder/Locater/Alarm (156 builds)
Racedayquads.com
$12.99

Battery Charger

SkyRC Quattro B6 80W DC
Robitronic.com
See Site

Backpack

Mardingtop Taktischer Rucksack 28L/40L, Herren Damen Wanderrucksack Für Bundeswehr, Survival, Outdoor, Trekking, Bergsteigen, R
Amazon.de
$49.63
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