Mamba Sauce

By Birchi on Feb 25, 2020

8  313  0

The Source One is a very easy frame to build on, and from all accounts seems to be plenty durable, which I definitely need.

My goal was to put together a reasonably priced yet durable 6s 5-inch quad. I feel like I achieved the reasonably priced part, however durability is still to be determined because it has been raining cats and dogs today. I did conformal coat, but I am not willing to risk it just yet.

There are really only a couple of challenges that I feel should be pointed out.

  • I used a large capacitor which sits on top of the VTX.. I'm not too keen on that, and it was a bit difficult to fit correctly. I worry that it might be broken by one of the battery straps.
  • The Mamba ESC has a strange layout to the solder pads. Each ESC has one solder pad on the outside of the standoff hole, and two on the inside. Its weird.
  • I had to VHB the receiver to the top of the flight controller, which I didn't want to do. Much rather have it stuck to the frame somewhere.
  • The Caddx Ratel Starlight doesn't come with a micro -> full size adapter. That set me back a few days.

There are a couple of things I would do differently in the next iteration of this build.

  • Get a purpose printed TPU part to attach the pigtail to that sits at an angle between the back standoffs.
  • Use a 30x30 VTX as there is PLENTY of room above the flight controller, and it would provide more space behind the stack for the capacitor, receiver, etc.
  • There is another mamba stack that is very similar, but with a 50a 4-in-1. The ESC has a more traditional layout for the solder pads, so I would probably pay the extra $10 or so for that one.

I am using the GoPro Hero 5 Black because I already have it. I may spring for the new Runcam Orange in order to shave off ~100g. Right now it sits at over 700g AUW which seems a bit portly.


Part List


RDQ Source One V3 5" Freestyle Frame - 4mm V0.3 Arms (5 builds)

Flight Controller

Diatone Mamba F405 Mk2 F40 Mk2 3-6S 30x30 Stack/Combo (F4 FC / 40A ESC)Default Title (74 builds)


4 x EMAX ECO Series 2306 1700Kv Motor (47 builds)


HQ Prop 5.1x3.1x3 POPO Compatible Tri-Blade 5" Prop 4 Pack - Choose Your Color (3 builds)

FPV Camera

Caddx Ratel Starlight HDR 1200TVL Micro FPV Camera - Choose Your Color & LensRed / 2.1mm (87 builds)

FPV Transmitter

AKK FX3 Ultimate Mini 20x20 25-600mW VTX w/ Smart Audio - MMCX & U.FLDefault Title (109 builds)


Foxeer Lollipop V3 5.8GHz SMA Antenna 2 Pack - RHCP - Choose Your Color (10 builds)


FrSky R-XSR SBUS 2.4GHz Micro ReceiverDefault Title (813 builds)


RDQ Series 22.2V 6S 1250mAh 80C LiPo Battery - XT60 (7 builds)


FrSky X-Lite Pro RC Transmitter (ACCESS & D16)


FatShark Attitude V5 OLED FPV Goggles w/ Diversity Receiver (8 builds)

HD Camera

See Site

Misc Parts

RDQ Kevlar Battery Strap w/Metal Buckle - 250mm (4 builds)

Misc Parts

Caddx Micro To Full Size Metal Camera Adapter Bracket

Misc Parts

Universal GoPro Hero 5/6/7 Mount - 3D Printed TPU - Choose Your Color & Angle25 / Grey

Misc Parts

Antenna Holder/Mount for Standoff - 3D Printed TPU - Choose Your ColorClear (6 builds)

Misc Parts

XT60 Pigtail 14AWG 4"Black (12 builds)

Battery Charger

HOTA D6 Pro Dual Channel 325W 15A AC/DC Battery Charger w/ Wireless Cellphone Charging (11 builds)

Soldering Iron

Hakko FX888D-23BY Digital Soldering Station FX-888D FX-888 (blue & yellow) (21 builds)
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