2.5" BR25 / Runcam Split Mini / 1106 / R-XSR

By fiveomustang on Jul 06, 2018

4 361 9

Based on https://rotorbuilds.com/build/11447 , I wanted to do a 2.5" prop build after completing my first 5". Everything went together well and it flies great on Betaflight 3.4! The RunCam Split Mini records way better video than I expected. Running all stock PIDs in Betaflight. I get about 4 minute flight times out of the 500mah batteries charged to normal voltages.

Here is the maiden flight video!

There is a pic of it next to my Martian II 5" for size comparison.

Update, upgraded to Betaflight 3.4 release version and added a spare gps for the heck of it. Return to home works great on the 2.5", ha ha!

Photos

Part List

Frame	BR25 2 and half inch frame kit (2 builds) Armattanproductions.com	$27.99
Flight Controller	HGLRC F4 Zeus F4 Flight Controller Integrated with OSD BEC PDB AIO 15A BLheli_S 4 In 1 ESC for RC Racing Drone (15 builds) Banggood.com	$49.20
Motors	4 x EMAX RS1106 6000KV MOTOR (1 PCS) - Heli-Nation Heli-nation.com	$51.96
Propellers	4 Pairs Gemfan Flash 2540 2.5x4 2.5 Inch 3-Blade Propeller with 1.5mm Mounting Hole (171 builds) Banggood.com	$4.11
FPV Camera	RunCam Split Mini FPV Camera / HD 1080P 60 FPS Recorder Heli-nation.com	$79.99
FPV Transmitter	Eachine VTX03 Super Mini 5.8G 72CH 0/25mW/50mw/200mW Switchable FPV Transmitter (417 builds) Banggood.com	$12.22
Antenna	Realacc UXII Stubby RHCP U.FL/IPEX IPX 5.8GHz 1.6dBi Mini FPV Antenna For TX RX Fatshark Goggles R (28 builds) Banggood.com	$7.09
Receiver	FrSky R-XSR Ultra SBUS/CPPM D16 16CH Mini Redundancy Receiver 1.5g for RC Multirotor FPV Racing Drone (936 builds) Banggood.com	$24.29
Batteries	6 x Turnigy Bolt 500mAh 3S 11.4V 65~130C High Voltage Lipoly Pack (LiHV) (5 builds) Hobbyking.com	$78.30
Radio	FrSky X-Lite 2.4GHz RC Transmitter w/ 18650 Battery Caps - Black or Red (65 builds) Racedayquads.com	$121.99
Radio	FrSky Taranis Q X7 2.4GHz 16CH Transmitter (White) (263 builds) Getfpv.com	$107.99
Goggles	Fat Shark Dominator HDO FPV Goggles (137 builds) Getfpv.com	$449.99
HD Camera	GoPro HERO8 Black - Waterproof Action Camera with Touch Screen 4K Ultra HD Video 12MP Photos 1080p Live Streaming Stabilization (18 builds) Amazon.com	$298.99
Misc Parts	5Pcs Realacc 58mm Battery Tie Down Strap for RC Micro FPV Racing Quadcopter Multirotor (6 builds) Banggood.com	$1.99
Video Receiver	ImmersionRC rapidFIRE w/ Analog PLUS Goggle Receiver Module (179 builds) Racedayquads.com	$169.99
Radio Module	TBS Crossfire TX LITE (6 builds) Getfpv.com	$149.99
Radio Module	TBS Crossfire Micro TX V2 (43 builds) Getfpv.com	See Site
Soldering Iron	Aoyue 469 Variable Power 60 Watt Soldering Station with Removable Tip Design- ESD Safe (10 builds) Amazon.com	$24.00
Backpack	Lowepro LP36899PWW Slingshot Edge 250 AW - A Secure, Slim, Smart and Protective Sling for a Compact DSLR or DJI Mavic Pro/Mavic Amazon.com	$114.99

Show stores (7)

Like Copy Part List Follow fiveomustang

Discussion

Ifly@sgfpv Dec 09, 2022

do u think this motor can handle 4s?

imreallythatguy Jul 11, 2018

2 quick questions. First is your video recorded with the Runcam or did you ziptie a gopro on or something? 2nd what is the pink and green box you have ziptied on in your very first photo? The one that looks like it has a button on top...

fiveomustang Jul 11, 2018

Video is from the RunCam, and the box on top is a UBLOX micro GPS module. This quad can return to home on failsafe instead of just drop (new feature in Betaflight 3.4).

ghostface Jul 10, 2018

Cool build! I am just about done with my rebuild using the new sides :D Only thing I did differently is using a tx20 as vtx which meant it was an ultra tight build height wise.

Out of curiosity, can you share your pids/config for bf 3.4 please since we are running practically identical builds :)

fiveomustang Jul 10, 2018

I'm no expert tuner so I'm using the stock 3.4 PIDs still but here are the values. Let me know if I missed anything.

ghostface Jul 11, 2018

Thank's a bunch - looking pretty smooth for stock tune :D

ghostface Jul 10, 2018

btw. you got the bumpers on upside down - if you put them on the other way they will act as soft mounts :)

fiveomustang Jul 10, 2018

lol! Thanks for the tip! That makes sense

ghostface Jul 11, 2018

Your welcome! Just watch out for the c-clip and that it doesn't bind with the edges of the hole when the motor turns.

Guides & Reviews

109 22,060 39

Build a 5" Long Range Drone - Transformer Ultralight

Jun 21, 2021

AirbladeUAV has done it again and this time they've brought long range to the 5" class! Based on the popular Transformer Mini, the new Transformer 5" Ultralight adopts a lot of the same design philosophies with larger props and more payload capacity. It can fly upwards of 20 minutes on a 4 cell Li-Ion battery pack and in ideal conditions it's got a range of over 4 to 5 miles. In this guide I'll walk..

67 17,609 64

Build a DJI FPV Cinewhoop - QAV-CINE Freybott Edition

Mar 04, 2021

With the release of the DJI FPV Drone cinematic FPV has become a lot more accessible, but you certainly don't want to crash a $750 drone! The QAV-CINE Freybott is a compact, lightweight cinematic FPV drone that can take a hit and keep going. It's a lot safer to fly indoors and around people. With a naked GoPro or the SMO 4k you can capture some great stabilized footage. In this guide I'll show you..

Guides and Reviews