Ichi-go Akitainu 3"

By irmanhilmi on Feb 02, 2018

24  2,149  6

UPDATE: Quad decided to make an unclimbable dead tree with vines and crackling branches as its final resting place. RIP.

UPDATE 2: Might just rebuild this again, but this time with more LEDs and colourful neon props so it will be easier to find. The HGLRCs are a bit too sensitive I believe, so will be looking at other stack alternatives.

This is actually my first quad build. Had a Walkera and a PNP Diatone GT-R90 plus a couple of Whoops but was inspired by Albert Kim's 2s build using the Akitainu frame and decided to go for an ultralight 3" quad with 1408 motors. Looks wise I was inspired by the murdered-out looks of the Furibee Darkmax.

So far it handles great, but I had to soft mount the motors and the whole stack to get rid of vibrations which made the quad drift to the left in angle mode. Flies fine in Horizon and Acro. Also as Albert Kim pointed out in his video the 2.1mm lenses won't fit in this slim frame, go for the 2.3mm instead.

Chose 1408 motors paired with the HGLRC stack powered by a Tattu 4s 650mAh, I think it's a pretty light build with extra punch. Now to see whether it can carry a Gopro or not!

ADDED : Total weight is 135.4g. I thought it was a fluke but I ran a couple of packs of the 4s 650mAh lipos and I'm getting 10+ mins of flight time if I was just hovering (was just testing my drifting problem). I'm assuming I can get at least a good 8+ mins if I was to fly regularly.

Photos

Part List

Frame

A-max Akitainu 130X 130mm Wheelbase 3mm Arm RC Drone FPV Racing Frame Kit support Runcam Micro Swift
Banggood.com
$24.69

Flight Controller

HGLRC XJB F428-TX20 V2 Omnibus F4 Flight Controller 28A 2-4S Blheli_S ESC 25/100/200/350mW VTX for RC Drone (27 builds)
Banggood.com
$79.00

Motors

4 x T-Motor F20II F20 II 1408 3750KV Brushless Motor 2-4S For 130 140 150 Multi Rotor (18 builds)
Banggood.com
$71.96

Propellers

2 Pairs Gemfan Flash 3052 PC 3-blade Propeller 5mm Mounting Hole for 1306-1806 Motor RC FPV Racing Drone (28 builds)
Banggood.com
$3.18

FPV Camera

RunCam Micro Swift 2 600TVL 2.1/2.3mm FOV 160/145 Degree 1/3 OSD CCD FPV Camera for RC Drone RC Parts from Toys Hobbies and R (290 builds)
Banggood.com
See Site

Antenna

Realacc RHCP Super mini UXII Stubby 5.8GHz 1.6dBi FPV Antenna For TX RX Fatshark Goggles RC Drone (42 builds)
Banggood.com
$7.05

Receiver

Frsky XM+ Micro D16 SBUS Full Range Mini Receiver Up to 16CH for RC FPV Racing Drone (1294 builds)
Banggood.com
$13.99

Batteries

TATTU 650mAh 14.8V 4S 75C Li-polymer Battery - $18.30 |GearBest.com
Gearbest.com
$18.30

Radio

FrSky ACCST Taranis Q X7 2.4GHz 16CH Mode 2 Transmitter Blue Orange for RC FPV Racing Drone (187 builds)
Banggood.com
$116.15

Goggles

Fat Shark Dominator V3 FPV Goggles (51 builds)
Getfpv.com
$299.99

HD Camera

GoPro HERO7 Black Action Camera (55 builds)
Getfpv.com
$399.99

HD Camera

GoPro HERO5 Session (199 builds)
Getfpv.com
$199.99

Video Receiver

FuriousFPV True-D V3.8 Diversity Receiver System - Clarity Redefined (17 builds)
Racedayquads.com
$55.99

Radio Module

TBS Crossfire Micro TX (94 builds)
Team-blacksheep.com
$69.95

Battery Charger

ISDT Q6 Plus 300W 14A MINI Pocket Battery Balance Charger (55 builds)
Banggood.com
$59.99

Soldering Iron

Temperature Controlled Soldering Station Analog
Proskit.com
See Site

Backpack

Lowepro QuadGuard BP X1 Black/Grey (3 builds)
Amazon.com
$59.99
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Discussion

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Rc Exp   Jul 22, 2018  

Why the いち - ご?

irmanhilmi   Jul 22, 2018 
1

Because it's quad #1 1号

RocketSquidFPV   Feb 09, 2018  

Wow. Great first build... looking for a three inch that has some power to it. This may be my build.
Will mention your @ once i finish it!

irmanhilmi   Feb 10, 2018 

Looking forward to your build! Let me know if you have that drift problem as well. I actually ended up soft-mounting the whole stack on double sided foam only and it has held well.

Jodie Froster   Feb 02, 2018  

Lookin GOOD! You really cured drift with motor soft mounts?!? My current setup has annoying drift every time I do a pre flight hover in stab mode. I don't think too much of it cause I fly in acro, but I sure would love for it to go away.... Motor soft mounts eh? I always thought that was just for sensitive gyros, but i'm willing to learn something new. I'm on a dys f4 pro, so i'm soft mounted at the stack, and running an mpu 6000 so I wouldn't think it would help... guess I have to try it now!

irmanhilmi   Feb 02, 2018 

I don't think the motor soft mounts solved it, as it was already on when my setup was drifting. I think it was my stack soft mounts. I actually used rubber bushings that came off some parts from my Axial Yeti! But yeah, it solved my problem! Of course I did everything else that you'd see on Youtube though.

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