XR-210

By QuadStar Drones on Aug 17, 2017

19  615  4

https://quadstardrones.com

The Idea:

Not many pics since it still has to be refined... The main plan was to come up with a fun flyer that is strong, light, and with a low cross section. A Runcam Split was used to help with a couple of the objectives. You can't tell in the videos, but a nice by product of the design is that it's relatively quiet. Obviously with the motor choice (not much of a choice since I'm hooked on these) I wasn't super concerned with weight. Although the frame is only 31g, AUW is about 405g.

Changes:

Arms

The frame didn't survive the day. The arms didn't break, but 2 of them lost torsional strength - the type of carbon fiber for the 6mm arms is not the woven pattern; the fibers run along the axis of the tube which gives it a lot of bending strength, but doesn't give it much twisting strength (torsion). During the crash, a couple arms got twisted which weakened the torsional stiffness of the arm. Although they still had strength in a bending direction, they felt extremely rubbery when twisting them. I will probably up it to 8mm arms (pictured below) on the next revision.

Protection

The mentioned crash also injured the runcam by way of a pine branch straight to the circuit board :( I can see this happening on just about any build, but some simple side shields could've helped to avoid this.

It Was Fun While It Lasted:

Photos

Part List

Frame

Quad Star Drones (7 builds)
Quadstardrones.com
See Site

Flight Controller

HYPERION FCF3PIKO... F3 PIKO BLX FLIGHT CONTROL PDB (2 builds)
Propshophobbies.com
$31.99

ESCs

DYS F30A 30A 3-6S 30x30 4in1 ESC w/ BECDefault Title (74 builds)
Racedayquads.com
$31.42

Motors

VEK 2207 2450KV Motor (3 builds)
Store.rotorriot.com
$25.99

Propellers

DAL 5x4.5 - 3 Blade, Black Cyclone Propeller - T5045C (Set of 4) (199 builds)
Getfpv.com
$2.40

FPV Camera

RunCam Split (Wi-Fi) (62 builds)
Rccrazed.com
$74.99

FPV Transmitter

Eachine VTX03 Super Mini 5.8G 72CH 0mW /25mW /50mw /200mW (426 builds)
Rccrazed.com
$13.99

Receiver

Lemon Rx DSMX Compatible Diversity Satellite (DSM2 backward compatible but must use DSMX compatible primary receiver) LM0037 (45 builds)
Amazon.com
$14.09

Batteries

Infinity Graphene LiPo Battery 1300mAh 90C 4S 14.8V SY60 Plug Compatible with XT60 for Racing Drone Multirotors (4 builds)
Smile.amazon.com
$26.99

Radio

FrSky Taranis X-Lite 2.4GHz Radio Controller (72 builds)
Airbladeuav.com
$119.99

Goggles

Eachine EV800D 5.8G 40CH Diversity FPV Goggles 5 Inch 800*480 Video Headset HD DVR Build in Battery (24 builds)
Banggood.com
$89.99

Misc Parts

Tarot Dia 10MM 3K Carbon Fiber Tube Boom 280MM TL68B22 For FY680 Quadcopter Hexacopter Multi Rotor (4 builds)
Amazon.com
$7.39

Misc Parts

MagiDeal Pack of 4 Carbon Fiber Tube 8*6mm 330mm DIY Vanished Surface Tail Tube (6 builds)
Amazon.com
$14.99

Misc Parts

Autek 2pcs 6MM OD X 4MM ID X 400MM Carbon Fiber Wing Tube Quadcopter arm Hexrcopter (2 builds)
Amazon.com
$12.50

Misc Parts

Braided Carbon Fiber Round Tubing ~ 1.75" ID x 24"
Dragonplate.com
See Site
Show stores (11)

Discussion

Sign in to comment

morsha   Feb 22, 2018  
1

HOw are the motors? What batteries do you use?

QuadStar Drones   Feb 24, 2018 
1

Sorry for the late reply - I love these motors: https://quadstardrones.com/2017/12/26/choosing-the-right-motor/
I've been using Infinity 4s 1300 90c. Joshua Bardwell did a lipo shootout and they performed pretty good, especially for the price.

nasone32   Aug 26, 2017  
1

Hi! I like your design and i'd like to make a similar one, with woven carbon tube, i'd love to see how you fixed the arms to the center plate!
Aerodynamics and weight are pretty good because it is really performing well. I hope you rebuild it soon.

QuadStar Drones   Aug 26, 2017 

I've always been sketchy with details since I am still refining it. I know how devastating it is putting all this work into a frame only to break it - I don't want to waste anybody's time! I did try the 8mm woven fiber tubes and I did crash and break it. It was a very hard crash (the battery flew 150 feet away) but I won't stop until it is bullet proof. After all, what is the logic in having a hot rod if you can't push it hard? I am getting there...

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