GEPRC GEP-MX3 'Sparrow'

By cjdavies on Oct 15, 2017

19  2,781  8

Transplanting the components from my Realacc MM130-o (Owl-style clone) onto a smaller frame.

162g dry, 263g with 850mAh 45C 4S Nano Tech.

Photos

Part List

Frame

GEPRC GEP - MX3 Sparrow 139mm DIY Frame Kit - $35.00 |GearBest.com (19 builds)
Gearbest.com
$35.00

Flight Controller

FuriousFPV RADIANCE Flight Controller - DSHOT600 VersionSKU: FPV-RADDS (3 builds)
Furiousfpv.com
$29.95

ESCs

Racerstar RS20Ax4 20A 4 in 1 Blheli_S Opto ESC 2-4S Support Dshot150 Dshot300 for RC FPV Racing Drone (67 builds)
Banggood.com
$21.99

Motors

4 x EMAX RS1306 4000K Brushless Motor CW (19 builds)
Getfpv.com
$51.96

Propellers

DYS-XT 3030 3 (1CW & 1CCW)
Kadosmultirotors.com
$1.39

FPV Camera

RunCam Micro Swift 600TVL 2.1mm IR Blocked 1/3 CCD FPV Camera PAL/NTSC 5.6g (197 builds)
Banggood.com
$29.99

FPV Transmitter

Runcam TX25 5.8G 48CH 25mw Video Transmitter for Micro Swift Micro Swift 2 Micro Sparrow (6 builds)
Banggood.com
$12.99

Receiver

FrSky XSR 2.4GHz 16CH ACCST Receiver w/ S-Bus & CPPM (481 builds)
Getfpv.com
$14.99

Radio

FrSky Taranis X9D Plus 2.4GHz ACCST Radio & X8R Combo w/ case (Mode 2) (42 builds)
Getfpv.com
$244.99

Goggles

FatShark Attitude V2 FPV Headset System w/Trinity Head Tracker and CMOS Camera
Hobbyking.com
See Site

HD Camera

GoPro HERO4 Session Video Camera GPCHDHS-102
$147.97

Video Receiver

Aomway DIV006 V4 DVR 5.8G 64CH Raceband FPV Receiver Built-in DVR w/ Auto Save Function
Banggood.com
See Site

Radio Module

FrSky R9M 900MHz Long Range Transmitter Module for FrSky R9 Series (54 builds)
Banggood.com
$61.80

Soldering Iron

Hakko FX888D-23BY Digital Soldering Station FX-888D FX-888 (blue & yellow) (19 builds)
Amazon.com
$99.41
Show stores (8)

Discussion

Sign in to comment

Arise   Jul 18, 2018  

Do you know the weight of the aluminium top part (the canopy) with its screws and standoffs? Without the carbon base frame. Thanks!

cjdavies   Aug 13, 2018 

No idea I'm afraid & I'm not planning to pull it apart to rebuild it quite yet!

theAdimal   Nov 10, 2017  

I'm trying to design my first build and I am thinking about putting these 1408 4100kv motors on the 145mm GEPRC frame. (http://geprc.com/product/geprc-gep-gr1408-4100kv/). I also want to run the runcam split 2 with a 850mAh 4S battery. I'm assuming those motors would give me more punch power, but I do not know as I have never built a quad yet. Is this possible/would it be worth it?

cjdavies   Nov 10, 2017 

I'm no expert on 3" builds, but I think the consensus is that 14xx is more 4" territory than 3", unless you want to run really heavy/aggressive 3" props (which might give you more punch, but wouldn't necessarily fly as smooth nor as long). These 1306/4000 certainly aren't lacking in punch (

) while still getting a good 5 minutes on an 850 4S - & apparently these Emax ones aren't even considered that good anymore as 13xx motors go!

theAdimal   Nov 11, 2017 

Hmmm, i'll take your word for it. Those 1306/4000 look very nice and i'll probably run them now. Thanks!

Whiffles   Oct 15, 2017  
2

I was tempted to build that frame. It's pretty unique and GEPRC makes a quality frame for the price.

cjdavies   Oct 15, 2017 
1

I was pleasantly surprised by the quality, especially considering the pricepoint. I'm still amazed that a 36mm stack with bags of spacing between the boards fits in so easily, it really was a breeze to build.

Whiffles   Oct 16, 2017 
1

Yep, it looks to have plenty of space. It would probably be a very good candidate for the Runcam Split.

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