CRD220 - "Schleifer"

By hmitec on Jan 24, 2020

4 161 2

finally...

next version of my frame is assembled and ready to fly.

For this version i basically took the structure of the "TBS-Source-one" (same arm-angle and screw distances) and put my own design over it.
The arm-thickness is 4mm, bottom and center plates are 3mm each and the top plate is 2.5mm.
Motor to motor distance is 220mm.

Because of the similarity, you can use a lot of TBS accessories including the arms.
Its still veeery, very compact and lightweight (83g with screws and spacers) but as durable and at least as fast and agile as the source-one.
With the lipo underneath and a go-pro on top you have a nearly perfect weight distribution...so...IMO its a stunning mix from racer and freestyler.

First test-flight comes this weekend.
I am very excited to try it out and will keep you posted.

If its as good as expected i would make a larger batch of those frames.
So if you are interested, like it or have some points of critique let me know.
I would like to hear some comments on this.

Photos

Part List

Flight Controller	Hobbywing Xrotor F4 G3 Flight Controller OSD & 60A 3-6S Blheli_32 DSHOT1200 Brushless ESC Stack for 130-300mm RC Drone (10 builds) Banggood.com	$115.86
ESCs	Hobbywing XRotor Micro 60A 6S 4-in-1 BLHeli_32 ESC (83 builds) Airbladeuav.com	$84.99
Motors	iFlight Xing 2208 2450KV 4S Unibell Camo Racing Motor kaufen \| FPV24.com Fpv24.com	See Site
FPV Camera	Runcam Eagle 800TVL Global WDR 4:3 FOV140° DC 5-17V CMOS Mini FPV Camera PAL NTSC Switchable (59 builds) Banggood.com	$44.99
FPV Transmitter	TBS Unify Pro 5G8 HV (SMA) (596 builds) Getfpv.com	See Site
Receiver	TBS Crossfire Nano Rx - FPV LONG RANGE DRONE RECEIVER (1484 builds) Team-blacksheep.com	$24.95
Batteries	Tattu LiPo Battery Pack 1550mAh 75C 4S 14.8V with XT60 Plug for RC Boat Heli Airplane UAV Drone FPV (42 builds) Amazon.com	$25.99
Misc Parts	HGLRC M8N GPS GLONASS MODULE (8 builds) Pyrodrone.com	$12.99

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Discussion

Aurora130 Jan 29, 2020

Really Awesome! It's just the right kind of frame for a strong light freestyle build. Does this arm design have any advantages over the standard source one v3 arms? I would probably change to an some sort of angled antenna mount just behind the frame to help prevent the anennat from breaking in the event of a crash.
How does it fly?

hmitec Jan 30, 2020

Hey :)
thanks a lot for commenting.
The Main reason for this arm design is that i want to reduce the weight a bit, but i am not a fan of the toothpick-style...and also...it looks very cool in my opinion. Simulation indicates that it should have almost the same toughness as the tbs.
For the next build i want to try a stubby-style antenna like the lumenier XII but an angled antenna mount would also be a nice idea.
Sadly, the weather wasnt very good the last days and prevented extensive testing.
Will keep you posted.

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