Angry Pixie

By hopsa on Jul 14, 2019

3 82 5

This build started with the frame and a good deal on the FC + ESC combo on a local auction platform. The ESC at least is way way overkill for this.
The Mitsuko is a quite minimalist frame and needs a bit of creative problem solving to install all hardware. In my case I added a few 3d printed TPU parts: Camera adapter, antenna holder, vtx tray, motor soft mounts.

Total weight with props but without battery: 236 g.

Photos

Part List

Frame	Mitsuko 4 (4 builds) Shendrones.myshopify.com	$55.00
Flight Controller	XRotor Micro Combo - F4 G2 FC - 45A 4-in-1 ESC (7 builds) Getfpv.com	$89.99
Motors	4 x BrotherHobby Avenger 1507-4100KV (4 builds) Getfpv.com	$67.96
Propellers	Gemfan Hurricane 4023 Durable Tri-Blade 4" Prop 4 Pack (5mm & 1.5mm Mounting) - Choose Your ColorPink (14 builds) Racedayquads.com	$2.99
FPV Camera	RunCam Micro Sparrow (10 builds) Shop.runcam.com	$29.99
FPV Transmitter	RDQ Mach 3 Video Transmitter 25-1000mW 5.8GHz VTX - U.FL or MMCX (146 builds) Racedayquads.com	$24.99
Antenna	A Pair Foxeer Lollipop 2 RHCP MMCX Right Angle/Straight 5.8G 2.5dBi FPV Antenna For FPV Racing Drone (15 builds) Banggood.com	$19.90
Receiver	FrSky XM+ 2.4GHz Micro ReceiverDefault Title (1149 builds) Racedayquads.com	$15.99
Batteries	TATTU 1300mAh 4s 75c Lipo Battery (57 builds) Getfpv.com	$24.99
Misc Parts	SainSmart TPU Flexible 1.75mm Filament 0.8kg Spool - Choose Your ColorWhite (10 builds) Racedayquads.com	$29.99

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Discussion

hopsa Sep 17, 2020

I changed to a much lighter propeller, now the motors reach their sweet spot and it flies way better. RPM filter also helps.

hopsa Jun 25, 2020

I bit the bullet and updated to Betaflight 4.2, it flies great now. The motor in the rear is definitely overheating though. It could either be the remaining oscillations from the d-term or the motors are just overtaxed with this relatively large prop area. Next I'll try what it does with bidirectional dshot and rpm filtering, then smaller props.

hopsa Jun 26, 2020

rpm filtering didn't make it fly perceptibly better, it still has issues with propwash. Motor temperatures are way better though, the rear motor is now no longer scorching hot, merely scalding.

fovea Jul 14, 2019

very nice! never saw a 4inch plus inhere or probably in general!
would be very nice to see how it perform, a dvr post would be very nice.

hopsa Jul 15, 2019

Here you go:

I'm still not that confident in flying this quad and the tune needs some work with propwash handling. Im sure it could do more than this with a better tune and of course a better pilot...
Also I'm still flying EV100 goggles which is the reason why the dvr looks so crap, not the fault of the camera or vtx.
The amp meter claims it topped out at almost 90 amps, but that's probably bullshit.

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