Chameleon LR 7" Mountain Surfer

By DustinTheWind on Jan 20, 2019

5  798  6

Final update - The F40s are nice and all, but this thing got so much better

Update 3/19/2019 - Scrapped the Helio spring and installed a BrainFPV Radix. The Helio had a faulty gyro sensor and was putting out horrific oscillations about 1/2 throttle. Also installed the Nano Diversity which i have been very happy with never dropping below 85% lq. Ever. Now flights on 6s 1800mah are similar to previous 5s packs, with more power to spare. And swapped to HQ 7x3.5's for cleaner HD.

This is my endurance build. As of Jan 2018, been out 2150m (7000 ft) with plenty of battery and vrx to spare. With the pyro Drone 5s 2200mah I'm getting about 8-9 mins of flight time crusing around 55km/h (35mp/h). I have a max amps 5s 2800mah that has almost the same form factor and only weighs 16g more. Waiting to test when there is a break in the mountain storms. I'm calculating about 3 more minutes of crusing time. Still working out a little jello from the video but it's workable at this point with the GemFan 7042 and turning off EIS in the Gopro. Also tried a set of DYS XT7543 which BARELY fit, but sound mean and throw it around like a freestyle quad. Helio FC was easy to tune and handles beautifully. GPS-rescue is functional on a switch, and saved my quad when I lost video behind some trees. Never tested due to failsafe, thank the Crossfire gods. The horizontal antenna orientation is still giving me no less than 95% LQ @ 100mw. And the RR Edition Swift makes the mountain tops all the better. All in all I'm happy with the result, and I've been flying this more than my freestyle rigs. AUW 886 - 900 g

Update - With the MaxAmps, I just did a 15 min hover/light back and forth using ~2350mah. Slightly more than 80% of total capacity. Resting voltage was 3.65 per cell. A little lower than I like to finish on, but I have a good idea how awesome these batts are. But is 25% more flight worth 3x the price of a 2200mah?


Part List


Chameleon Ti LR 7 inch (11 builds)

Flight Controller

radix fc - brainfpv (117 builds)


4 x Airbot Wraith32 V2 BlHeli_32 35A ESC (7 builds)
See Site


4 x TMotor F40 PRO II - 1600KV (35 builds)


HQ Prop 7x3.5x3 V1S Tri-Blade 7" Prop 4 Pack - Choose Your Color (26 builds)

FPV Camera

RunCam Swift Rotor Riot 2 Special Edition - Silver (93 builds)
See Site

FPV Transmitter

TBS Unify Pro 5G8 HV (SMA) (596 builds)


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



Power Distribution

BrainFPV RADIX Power Board (8s, LEDS, Current Sensing, Stackable with RADIX FC) (10 builds)


iX12 DSMX12-Channel Transmitter


Eachine EV200D 1280*720 5.8G 72CH True Diversity FPV Goggles HD Port in 2D/3D Built-in DVR (27 builds)

HD Camera

GoPro HERO7 Black Action Camera (102 builds)

Misc Parts

4Pcs RJX Non-Slip Silicone Battery Straps Aluminium Alloy Buckle for FPV Helicopter Drone (2 builds)

Misc Parts

Armattan Chameleon Ti Accessory Kit (5 builds)

Misc Parts

Dual BN-220 NEO-M8N GPS GLONASS Antenna Module Ublox M8030 TTL Level RC Drone Airplane (17 builds)

Misc Parts


Radio Module

TBS Crossfire TX LITE (6 builds)

Battery Charger

HOTA D6 PRO Dual Charger 1-6S AC200W/DC650W 15A w/ Wireless Cellphone Charging - Black (14 builds)


Lowepro QuadGuard BP X3 - Drone Backpack for 4 FPV Quad Racing Drones and 15" Laptop w/Exterior Mounts (Black) (24 builds)


TBS Diamond Antenna (37 builds)
Show stores (11)


Sign in to comment

rossmoney   Jan 20, 2021  

I found that this frame had a lot of resonance and was unable to be tuned properly.
were you able to tune it well?

iblackymb   Feb 18, 2020  


Nice build! Are you getting good gps fix with the module between the bat and the gopro?

Show 1 more comment
iblackymb   Feb 19, 2020 

Thanks for your reply!
What an awesome build! One more question if you allow me, can i download the vtx antenna support from somewhere? I really like how it looks.


DustinTheWind   Feb 23, 2020 

It is the Immortal T 3d mount from Bmc3d. I don't have the file

iblackymb   Feb 24, 2020 

Thanks mate, i´ll check it.

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