Big Bertha

By Danimal_FPV on Mar 26, 2018

5 256 4

My own custom carbon fiber frame nicknamed "Big Bertha" due to the Top/ Bottom Plates and Arms all being ~4.7mm thick.
It uses 25mm standoffs to fit a 4in1 ESC, Flight Controller, and Matek VTX.
The arms are a "wishbone" design -- which mounts with 2 screws through the bottom plate and into the standoffs -- making it extremely quick and easy to replace.

The bottom plate has countersunk holes to protect the battery from getting damaged by the screw heads.
There are three 3D printed parts: Fixed-Angle camera mount, Axii Stub/ FrSky antenna mount, and XT-60 mount all made from TPU (Flexible filament)

The frame, standoffs, and screws weigh in at 87.6g for a total weight (excluding battery) of 305.9g <-- VERY good considering the plate thicknesses!
In comparison, my QAV-X210 frame weighs 304g's.

Photos

Part List

Flight Controller	PyroDrone F4 OSD (38 builds) Pirofliprc.com	$32.99
ESCs	AIKON AK32 35A 4in1 32 BIT ESC *UPDATED VERSION* (49 builds) Pirofliprc.com	$66.00
Motors	4 x 3B 2207 2650kV (8 builds) Undergroundfpv.com	$59.96
Propellers	DALPROP T5046C Cyclone (2 CW 2 CCW) (391 builds) Pirofliprc.com	$2.99
FPV Camera	Foxeer Predator Micro V4 1000TVL 16:9/4:3 NTSC/PAL CMOS FPV Camera w/ OSD PLUG VERSION - Choose Your Color & Lens (149 builds) Racedayquads.com	$23.09
FPV Transmitter	Matek VTX-HV 30x30 25-500mW 5.8GHz VTX w/ BFCMS Control - MMCX (20 builds) Racedayquads.com	$29.99
Antenna	Lumenier AXII Stubby 5.8GHz Antenna (RHCP) (232 builds) Getfpv.com	$14.99
Receiver	FrSky XM+ 2.4GHz Micro ReceiverDefault Title (1149 builds) Racedayquads.com	$15.99
Batteries	Ovonic 14.8V 1550mAh 100C 4S LiPo Battery Pack with XT60 Plug for FPV Racing RC Quadcopter Helicopter Airplane Multi-motor Hobby Amazon.com	$28.99

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Discussion

gilesclement Apr 08, 2019

Nicely done, wondering where you got the carbon cut?

Danimal_FPV Apr 08, 2019

http://thepineguild.com <-- this is my parent's business. My father has a high end CNC machine that cut the carbon.

Whiffles Mar 26, 2018

Great work! What sort of carbon did you use there? It appears to have a grey finish to it.

Danimal_FPV Mar 26, 2018

thanks! just some carbon fiber prepreg I came across. It has a fiberglass facesheet which you're probabaly noticing

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