Dr. 250

By sark on Dec 11, 2015

2  145  4

My first quad racer build:

Defy DR250 Frame: https://www.defy.net/xcart/carvon-fiber-dr250.html


Part List


Defy DR250 H Quad Full Carbon Fibre Quadcopter Frame

Flight Controller

Acro Naze 32 - Flight Controller Rev 6


4 x Rotorgeeks RG20 Plus ESC (13 builds)


4 x Cobra 2206 2100kv (3 builds)


10 sets - RED/BLACK Gemfan 5030 2-Blade Multirotor (Total Qty = 40 props)

FPV Camera

600TVL SONY SUPER HAD CCD D-WDR Color Board Camera OSD Menu DNR-US (4 builds)

FPV Transmitter

Ready Made RC LLC, The Leader in All Things FPV, RC, and Beyond
See Site


ImmersionRC 5.8GHz Circular Polarized SpiroNet Antenna V2 (RHCP SMA)


Dinogy 3S 11.1V 1500mAh 65C

Power Distribution

Afro Power Distribution Board

HD Camera

RunCam 2 (7 builds)

Misc Parts

FrSky d4r-ii / X4R Mount - FPV FlightClub (3 builds)

Misc Parts

SMA male to SMA female right angle jack pigtail (2 builds)

Misc Parts

Rotorgeeks Battery Strap - 20x210mm (10 builds)

Misc Parts

Stepdown regulator - micro (5 builds)

Misc Parts

Volo LEDs - Tiny LEDs that fit anywhere
See Site
Show stores (10)


Sign in to comment

Whiffles   Dec 11, 2015  

Looks like a nice frame. I wonder how it compares to the Lumenier QAV250. BTW, sorry the part labeling is a little wonky right now. If you edit your build and tag your parts they'll save properly.

sark   Dec 12, 2015 

I have not yet had a chance to do a hands on comparison to the QAV250 frame. However, one reason I chose this frame over it was I wanted arms that were separate from the frame. As this is my first quad racer I expected to break the arms a few times. Thus replacing a couple of sheered screws seemed a better idea than replacing a full frame. As a side note this frame is derived from an untested prototypes frame. You can see the original here:


sark   Dec 23, 2015 

Was thinking maybe a few additional parts sections could be: OSD, Antenna, and maybe LC Filter? Although LC Filter may be best as a misc part, because they are often included in PDB and OSD.

Whiffles   Dec 24, 2015 

Some good suggestions. I'll see about getting those added.

Guides & Reviews

Jun 21, 2021

AirbladeUAV has done it again and this time they've brought long range to the 5" class! Based on the popular Transformer Mini, the new Transformer 5" Ultralight adopts a lot of the same design philosophies with larger props and more payload capacity. It can fly upwards of 20 minutes on a 4 cell Li-Ion battery pack and in ideal conditions it's got a range of over 4 to 5 miles. In this guide I'll walk..

Read more
Mar 04, 2021

With the release of the DJI FPV Drone cinematic FPV has become a lot more accessible, but you certainly don't want to crash a $750 drone! The QAV-CINE Freybott is a compact, lightweight cinematic FPV drone that can take a hit and keep going. It's a lot safer to fly indoors and around people. With a naked GoPro or the SMO 4k you can capture some great stabilized footage. In this guide I'll show you..

Read more