I've been wanting to build a smaller brushless copter for almost a year but hadn't had the funds, because my 5"er was taking all my attention. Now that I've got my 5"er dialed in, it's time to build a 3"er. I bought the Bonzai 130mm frame over 6 months ago and it's been sitting on my bench. I choose this frame because the main plate is 3mm, it accepts standard sized flight controllers, and looks like it will be fairly easy to build for a 3" copter.
Edit - finished up at 219 grams all up with 850mah 3s. The dal props make the motors too hot so I have some RotorX 3040 tri props in the mail. I still need to soft mount the FC and finish tuning but so far this thing is a rocket.
Edit #2 - Been loving this setup with the Turnigy Nano-Tech 850mah 3s, but I'm ready to step it up to 4s and this build can already handle it so I've ordered some RMRC 850mah 4s lipos. I also broke all of my RotorX 3040t props and have been using the much cheaper DYS 3045 tri blades for a while, they aren't as efficient as the Rotor X props but they have tons of punch and are cheap.
Here it is in action -
Frame |
Bonzai 130nzai FPV Racing Frame (3K Carbon)
(2 builds)
Myrcmart.com
|
$14.99 |
Flight Controller |
OpenPilot CC3D Revolution ACRO V2
(17 builds)
Readytoflyquads.com
|
$18.00 |
ESCs |
Racerstar RS20Ax4 V2 Blheli_S 20A 2-4S 4 in 1 ESC with 5V LBEC Can support 16.5 DShot600 for FPV Racer
(4 builds)
Banggood.com
|
$30.00 |
Motors |
2 x DYS BX1306 1306 4000KV CW/CCW Brushless Motor for Multicopter
(22 builds)
Banggood.com
|
$43.78 |
Propellers |
2 x 2 Pairs DALPROP 3045 T3045 3 Blade PC Propeller CW CCW For 100 120 150 RC Multirotor
(14 builds)
Banggood.com
|
$5.60 |
FPV Camera |
Eachine TX03 NTSC Super Mini 0/25mW/50mW/200mW Switchable AIO 5.8G 72CH VTX 600TVL 1/3 Cmos FPV Camera
(36 builds)
Banggood.com
|
$19.99 |
Receiver |
Flysky FS-A8S FS A8S V2 2.4G 8CH Mini Receiver with PPM i-BUS SBUS Output
(91 builds)
Banggood.com
|
$9.99 |
Batteries |
2 x Turnigy nano-tech 850mAh 3S 45~90C Lipo Pack
(2 builds)
Amazon.com
|
$22.98 |
Misc Parts |
Rotorx Rx3040t Tri Prop 4 Pack White - www.readymaderc.com
(5 builds)
Readymaderc.com
|
$4.49 |
Goggles |
Fat Shark Dominator V3 FPV Goggles
(63 builds)
Getfpv.com
|
$299.99 |
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