iFlight HL7 "GreenMachine"

By robbson on Oct 23, 2018

14 1,161 3

This is my GreenMachine 7" medium/long range build.

I'm trying the new iflight HL7 V2 frame with 5mm arms. I hope there will be less vibrations than on frames with thinner arms.
The frame is very stiff and there is a lot of space! It's not a particular light (143g) though...
There is a very well fitting GoPro mount available as well.

I tested 4 different props so far.

Dalprop T6040C - Flight time with 1500mah 4S ~5:50min
Gemfan 7042-2 - Flight time with 1500mah 4S ~6:30min (Lots of vibrations!)
Gemfan 6042-3 - Flight time with 1500mah 4S ~6:00min
Gemfan 6042-2 - Flight time with 1500mah 4S ~6:20min

Max speed with the Gemfan 6042-3 is 110km/h.
AUW with 1500mah 4S and GroPro is 689g.

The stand for the GPS module didn't survived the maiden day... I need to think about another solution.

Photos

Part List

Frame	iFlight HL7 V2 296mm 7" Long Range FPV Racing Drone Iflight-rc.com	$55.99
Flight Controller	Matek F405-CTR 30x30 Flight Controller (34 builds) Racedayquads.com	$39.99
ESCs	4 x Tekko32 F3 ESC (BLHeli 32) Shop.holybro.com	$59.96
Motors	4 x TMotor F40 PRO II - 1600KV (35 builds) Getfpv.com	$99.60
Propellers	Gemfan Flash 6042-3 Tri prop Pirofliprc.com	$3.99
FPV Camera	Foxeer Falkor 1200TVL FPV Camera 4:3/16:9 PAL/NTSC G-WDR OSD Freestyle Long Range (4 builds) Foxeer.com	$25.90
FPV Transmitter	RUSH VTX TANK 5.8G 48CH Smart Audio 0-25-200-500-800mW Switchable AV Transmitter for RC Drone (75 builds) Banggood.com	$32.99
Antenna	TBS Triumph SMA (RHCP 2pcs) (369 builds) Team-blacksheep.com	$39.95
Receiver	FrSky R9 Slim+ OTA 915MHz Long Range Receiver w/ 2pcs Dipole T Antennas (17 builds) Getfpv.com	$27.99
HD Camera	GoPro Hero5 Session, 1080p (303 builds) Amazon.com	$230.41

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Discussion

slavasav Mar 09, 2020

Neat! Building the same frame now. Did you figure out what are those hooks at the arms ends for?

simogere Dec 10, 2018

Hi robbson, what a nice build! I was planning to build my 7'' quad with the new HL7 v2 frame.
I was looking to the flight time: your max time is 6:30min, right? Isn't a bit to low? Or is it just normal?
I want to use EMAX RSII 2206 1600KV motors and I expect to get a bit more flight time (maybe using a 6S li-ion battery pack)

robbson Jan 06, 2019

Hi simogere, the 6:30 flight time was with a 1500mah 4S pack. Obviously you can put a 1800mah or 2200mah pack on it and easily cruise for 10+ minutes. 6S is definitely recommended if you want to do light freestyle. 4S with the low KV motors is good for cruising but not much more.
After a few month of flying the HL7 I still really like it. I get beautiful, smooth footage from it and it just fly like on rails.

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