BR0705 No Dissemble

By dickflys on Oct 12, 2017

19 1,595 12

Spin off build of https://rotorbuilds.com/build/6815

75mm 2s FPV brushless indoor/outdoor

After the failure of my 0703 build, I was still determined to make a 2s brushless beast. Moved up to 0705 motors to handle 2s and a little longer wheelbase for stability. I went with 8000kv, after the maiden flight I could have gone 12000kv 0705 for more speed and punch. This will give some nice flight times.

Build notes:

Fitment required 3m tape for the stack with no lower standoff, this allowed the stack to sit further back in the frame to mount the camera inside the front standoffs.
Camera is hotglued in and VTX is taped to top plate. A 3d print cover/mount would be nice. extra weight.
De-cased receiver to fit. I recommend something smaller like FS-RX2A. I wanted more range for this.

Todo:

Clear heat shrink the VTX.

Photos

Part List

Frame	Realacc lollipop75 75mm Carbon Fiber Frame with 2 Pairs 40mm 3-blade Propeller Support 0703 Motor (2 builds) Banggood.com	$4.54
Flight Controller	Super_S F4 2S Flight Controller Built-in Betaflight OSD+Super_S BS06D 4in1 Blheli_S 6A ESC for RC Drone (23 builds) Banggood.com	$32.24
Motors	4 x Racerstar Racing Edition 0705 BR0705 12000KV 15000KV 1-2S Brushless Motor For 60/80/100mm RC Drone (4 builds) Banggood.com	$35.96
Propellers	Rakonheli 40mm 3 Blade Transparent Propeller (2CW+2CCW; 1.0mm Shaft) (Black) - Inductrix/FPV RKH 74DQX (2 builds) Amazon.com	$5.99
FPV Camera	Turbowing 5.8G 48CH 25mw 700TVL Wide Angle FPV Transmitter Camera NTSC/PAL Combo for FPV Multicopter (3 builds) Banggood.com	$16.88
Receiver	usmile FS82 2.4G Micro receiver for Flysky Micro Carbon Fiber Quad Frame FPV racing drone Support for AFHDS 2A IBUS PPM FS-I4,FS (6 builds) Amazon.com	$12.79
Batteries	Crazepony 300mAh 2S LiPo Battery 35C 7.4V with XT30 Plug for Micro FPV Drone Mini Quadcopter RC Multirotors Amazon.com	$5.99
Misc Parts	5 PCS Super Loud 5V Active Alarm Buzzer Beeper Tracker 9*5.5mm for RC MultiRotor FPV Racing Drone (33 builds) Banggood.com	$3.17

Show stores (2)

Like Copy Part List Follow dickflys

Discussion

mhr63 Mar 07, 2018

hi
i want build this quad with 0703 12000kv motors . but each motor on 2cell used 3.7 Amp and Fc output 6A
4 motor use about 16A
Does the FC output a total of 6 amps or Or on every output of 6 amps?
Is this FC responsive?

dickflys Mar 11, 2018

I didn't have good luck with 0703 motors on 2s. The motors would burn up after 1 or 2 packs. That's why I rebuilt it with 0705.

This ESC had 6A per motor. FC is fine.

Kal-EL Oct 13, 2017

How does it fly and handle crashes?

Show 3 more comments

Kal-EL Oct 14, 2017

My issue is I don't have enough time to build. What little time I get I try and get some flying in.

SirUlrich Dec 04, 2017

Hey, just to clear up, were you burning up the 15000kv and so moved down to 8000kv?

dickflys Dec 05, 2017

SirUlrich - My first attempt at this build was running BR0703 15000kv motors on 2S. These motors would not hold up to 2S.

I changed to BR0705 and lower 8000KV, the higher KV motors were sold out at the time. I would recommend using BR0705 and 12000kv if possible.

Jack_hoos Nov 03, 2017

How is the VTX wired up to the FC/OSD? (There isn’t a lot of documentation on the website)

dickflys Nov 03, 2017

The yellow signal wire from the cam to the VTX was cut (I might have extended it I dont remember) and then hooked up to Vin in and Vout on the Flight controller. The power is running off the GND +5v. The images are on banggood. http://img.banggood.com/thumb/water/oaupload/banggood/images/EC/0A/f9c08e65-1f8b-4301-a503-8f22aca0e066.jpg

Jack_hoos Nov 03, 2017

Ooooh, now I see. I thought the V stood for voltage, not video.🤦‍♂️

Guides & Reviews

108 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