C5

By Phanny P on Apr 15, 2017

1 479  13 

Thank God the warm weather is finally here! Continuing the R&D on quad frame physics in pursuit of efficiency: https://downanddirtydrones.com/drone-physics/

So far, I am convinced of the advantages of a "Z frame": https://downanddirtydrones.com/air-drag-and-cross-sections/

The main objective was to design a frame that will have the center of thrust, center of gravity, and center of pressure all in alignment while keeping the cross section as small as possible. The main challenge here was the battery placement (up to a 5s lipo fits inside the body tube). Another nice feature is that the motors can be set at any angle.

One objective that I decided to ditch (for now) was waterproofing. I tried it on the C3 project (the black one pictured below) and things went wrong. An ESC overheated, shut down, and it crashed into a boat before dropping into the ocean. It didn't matter that it was waterproof once the body was broken open...

No mount for a GoPro style cam, but a Mobius Mini can easily be placed on it and I am extremely happy with the quality.

NOT happy yet with my flying skills...

Photos

Part List

Frame

C5
Downanddirtydrones.com
See Site

Flight Controller

BetaflightF3 Flight Controller
Pirofliprc.com
$42.99

ESCs

4 x Spedix 30A HV 3-6S ESC BLHeli_S (4 builds)
Pirofliprc.com
$47.80

Motors

4 x Brotherhobby Tornado 2206 T2 (3 builds)
Flyrcnow.com
$95.96

Propellers

RK5051 Triprop Emerald Blue Clear (Set of 4)
Pirofliprc.com
$3.99

FPV Camera

Crazepony 700TVL Wide Angle FPV Camera 700TVL 3.6mm Lens NTSC for QAV250
Amazon.com
$16.99

FPV Transmitter

AKK X1 40CH 25mW/200mW/600mW Switchable FPV Transmitter with Push Button and Digital Display (4 builds)
Smile.amazon.com
$21.99

Antenna

Anbee FPV 5.8Ghz Circular Polarized Clover Leaf Antenna High Gain Aerial Set w/RP-SMA Plug (2 builds)
Amazon.com
$9.98

Receiver

Lemon Rx DSMX Compatible Diversity Satellite (DSM2 backward compatible but must use DSMX compatible primary receiver) LM0037 (6 builds)
Amazon.com
$13.09

Batteries

SMC Extreme 1400mah 4S Racing Battery - True Spec Extreme (7 builds)
Racedayquads.com
$29.95

Misc Parts

Online Metal Supply 5052-O Aluminum Round Tube 2" OD x .035" W x 12"
Amazon.com
$9.16

Misc Parts

Tarot Dia 10MM 3K Carbon Fiber Tube Boom 280MM TL68B22 For FY680 Quadcopter Hexacopter Multi Rotor
Amazon.com
$7.05

Misc Parts

2 x ESTES 303168 NC-80B Nose Cone (1) ESTT3168
Amazon.com
$5.22

Misc Parts

Micro uBlox M8N GPS GLONASS W/ (18x18mm)
Readytoflyquads.com
$16.00

Misc Parts

MagiDeal Pack of 4 Carbon Fiber Tube 8*6mm 330mm DIY Vanished Surface Tail Tube
Amazon.com
$12.06

Misc Parts

4 Pcs 9 Type Connection Fittings 10mm Carbon/Fiberglass Tube Connection Accessories for Multi/Quadcopter Landing Gear (2 builds)
Aliexpress.com
$10.99
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Discussion

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metropolis   14 days ago  

Nice man! I've been into your work for a bit now and happy to see something else pop up! Keep it up!

Phanny P   14 days ago 

Too many ideas - never enough time... I remember the offer to crash test the C2. I also managed to crash that one too (told you I would have no problem doing it myself)! It did not hold up as well as the C5 since the polycarbonate tube cracked. I'll be in high gear testing new stuff from now til fall!

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