AirbladeUAV Intrepid 3"

By Etolier on Jul 04, 2018

2  229  7

Previously, this setup was on a second Intrepid 4", then moved to a SabotageRC Bangarang, and then finally moved to the Intrepid 3".

The higher 3750kv 1408 F20II motors were getting pretty hot in all of the 4" configurations that I tried. The weight doesn't come down a huge amount with the 3" frame, but the prop loading with the 3x4x3 props is a bit lower and the temps have definitely come down.

All the previous setups had the Runcam Split 2, whereas for this build I switched to the Foxeer Predator V2 and tried out the Runcam Mini DVR. Turns out the Predator is a great camera and the Mini DVR is solid. There's another 20x20 DVR from HGLRC, which records 24fps, breaks up the video into the 5 minute segments, and has a somewhat more limited pad layout - The Runcam breaks files up every 5 minutes as well, but there's an optional firmware that changes that to 10 minutes, and it also records 30fps. The resulting video is good enough, typically I'm not breaking out a micro quad to do really HD-worthy flights, but I do like having some recording going in case something rad happens, and the onboard DVR skips the video breakup which is nice.

Apart from that, it's a pretty typical build for me. There's a new Intrepid Pro frame coming from AirbladeUAV soon that may have dual 20x20 stack mounting as well as GoPro Session mounting ability, but I still like the original Intrepid platform a lot.


Part List


AirBlade Intrepid V1 3K Carbon Fiber Frame Kit (14 builds)

Flight Controller

CLRacing F4S V1.6 AIO 30x30 Flight Controller (143 builds)


4X DYS DS20A 20amp BLHeli_S 2-4S ESC BB2 Supports Dshot600 Dshot300 Dshot150 Oneshot42 RC Drone FPV Racing (7 builds)


4 x Tiger Motor F20II 1408 3750KV Brushless Motor (16 builds)


RaceKraft 3076 3" Tri 3-Blade Prop (Set of 4) - Red, Smoke, Blue, Green, Purple (8 builds)


HQ Prop 3x4x3 V1S Tri-Blade 3" Prop 4 Pack - Choose Your Color (41 builds)

FPV Camera

Foxeer Predator Standard/Mini V3 1000TVL CMOS 16:9/4:3 PAL/NTSC Super WDR FPV Camera w/OSD (1.8 or 2.5mm) - Choose Your Color & (106 builds)

FPV Transmitter

TBS UNIFY PRO HV 5G8 SMA (596 builds)


Lumenier AXII 5.8GHz Antenna (RHCP) (2pcs) (199 builds)


FrSky R-XSR 2.4GHz Micro ReceiverDefault Title (928 builds)


Tattu 14.8V 4S 850mAh 75C LiPo Micro Battery - XT60XT60 (12 builds)


TBS Tango 2 Pro - FPV RC Radio Drone Controller (78 builds)


RadioMaster TX16S Hall Gimbals Built-in USB-C Multi-Protocol Module Radio PRIORITY SHIPPING INCLUDED (82 builds)


FrSky Taranis Q X7 2.4GHz 16CH Transmitter (Black) (254 builds)


Fat Shark Attitude V4 FPV Goggles Anniversary Edition (20 builds)



HD Camera

RunCam 5 Orange

Misc Parts

RunCam Mini FPV DVR (12 builds)

Video Receiver

ImmersionRC PowerPlay - FPV DVR (h264, 60fps)

Video Receiver

SpiroNet 5.8GHz 13dBi LZR Antenna (RHCP)

Video Receiver

TrueRC Singularity 5.8 SMA 90 Degree Long Antenna RHCP

Video Receiver

SINGULARITY 5.8 stubby - TrueRC Canada

Video Receiver

ImmersionRC rapidFIRE w/ Analog PLUS Goggle Receiver Module (182 builds)

Radio Module

TBS Crossfire Yagi 915mHz

Radio Module

TBS Crossfire TX - Long Range R/C Transmitter (5 builds)

Radio Module

True-MoX 915 |

Battery Charger

iSDT D2 Smart Balance Charger (11 builds)

Soldering Iron

TS100 PORTABLE SOLDERING IRON W/XT60 Power Cable (17 builds)


ETHIX Neck Strap (3 builds)


FrSky Vantac M4 4mm CNC Aluminum GRAND LOTUS Gimbal Stick Ends
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Philo777   Jan 03, 2019  

Hi so did you have an issue with placing the Predator standard v3 camera in this frame? I have this frame also and was thinking of getting this camera but did not want the micro size prefer this standard size.

Etolier   Jan 04, 2019 

No issues whatsoever, all of the Intrepids that I have built use cameras like the Predator standard or the Runcam Split 2 - without spacers they fit almost perfectly, directly into the frame with two screws on either side.

McMa_Returns   Aug 09, 2018  

Nice build! Do you know how much current it draws at full throttle? I have the same motor-prop combination but can't get current sensing to work :/

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McMa_Returns   Aug 09, 2018 

cool, thanks! The weak link for me is the 650mah 75C battery, but guess it should be ok then...

Etolier   Aug 09, 2018 

I have been using an 850mAh on my 3" stuff lately - pretty good flight times, even though it's a little tubby. I'm sure your 650 will tolerate it, might be sketchy if you want to be at full throttle for more than 10 seconds(?)
None of my quads fly great at 100% anyway, efficiency really drops off and vibration ramps up.

McMa_Returns   Aug 09, 2018 

My quad is 249g with battery and and skyrockets with 75% throttle and above; I doubt I ever went full throttle longer than a second :D

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