Racer X Mutant 4”

By Boeseefus on Feb 27, 2020

14 670 7

                  Racer X Mutant 4"

Since im addicted to building quads , I figured i should build my first 4". Wasnt trying to build the lightest nor the heaviest of quads, just something that flew well, and was fast. I think I achieved that.

****Still tuning, might try 1606 4000kv motors.

I did try emax 1606 4000kv motors, and did not notice a performance increase, just less efficient. Put the Brother Hobby 1507 4100kv motors back on. Took a lot of tuning to get to fly the way i like, but must say this is my fastest quad i have. Its an absolute rocket ship, and fun to fly.

Photos

Part List

Frame	Racer X Mutant 4 4" Toothpick Frame (3 builds) Racedayquads.com	$32.99
Flight Controller	Diatone Mamba F405 Mini Mk3 F35 3-6S 20x20 Stack/Combo (F4 FC / 35A 4in1 ESC) (10 builds) Racedayquads.com	$59.99
Motors	4 x BrotherHobby Avenger 1507 4100Kv Micro MotorDefault Title (3 builds) Racedayquads.com	$67.96
Propellers	HQ Prop 4x4.3x3 V1S Tri-Blade 4" Prop 4 Pack - Choose Your ColorOrange (32 builds) Racedayquads.com	$2.99
FPV Camera	RunCam Nano2 (184 builds) Pyrodrone.com	$19.99
FPV Transmitter	AKK X5 5.8Ghz 25mW/50mW/100mW/200mW FPV Micro Transmitter Support OSD Configuring via Betaflight Flight Control (3 builds) Amazon.com	$11.99
Antenna	2pcs Foxeer Lollipop 85.5mm 5.8G 2.3dBi RHCP UFL Super Mini FPV Antenna Red/Black For RC Drone (106 builds) Banggood.com	$19.99
Receiver	Team BlackSheep TBS Crossfire Nano RX - Heli-Nation (1500 builds) Heli-nation.com	$24.99
Batteries	Tattu 850mAh 3S 75C LiPo Battery - XT30 (5 builds) Getfpv.com	See Site

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Discussion

Gtchaz Jun 23, 2020

Hi there ! I have used exactly the same FC - Mamba mini MK3 , connected my crossfire nano wiring exactly the same as your photo. I have enabled Serial Rx on UART1 in Betaflight but I am getting no stick inputs at all. The Crossfire is succesfully bound - did you have this issue ? Can you think of anything I might be doing wrong ??

Boeseefus Jun 23, 2020

Have you made sure your crossfire module & receiver are on same firmware? I use a Nirvana transmitter and i had issues with the latest firmware of crossfire, and had to downgrade to few versions below. When i get a chance ill check my betaflight config, and make sure i didnt have to do anything unusual to get this to work.

Gtchaz Jun 23, 2020

Yes - when I bound the crossfire nano to my Tango 2 , it automatically updated the receiver and bound successfully - so i assume they are on same firmware.

Boeseefus Jul 07, 2020

Did you ever get your receiver going? Sorry for slow response, haven't even had time to even fly lately.

wiigelec Feb 28, 2020

what is the weight including battery?

Boeseefus Feb 28, 2020

Ill have to check. I think without battery it was around 150g. Ill check for you when i get a chance

JustJMP Feb 28, 2020

Would love to know this as well, looking for a beast under 250g to play with

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