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Jul 04, 2019, 07:23 PM
"Aircraftus Fragmentum"
kydawg1's Avatar
Dbz619.... here is a flight today on 4.0.3

I just upped to 4.0.4 this eve...will maiden and post over the next couple days.

2019 #78 Fourth Of July KOPIS2 Betaflight 4.0.3 - 2019 0704 (Silverchair -Shade, Hawkeye Firefly V2) (3 min 46 sec)
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Jul 04, 2019, 08:02 PM
Toycar racer
Dbz619's Avatar
nice rip kydawg.
Jul 04, 2019, 08:07 PM
"Aircraftus Fragmentum"
kydawg1's Avatar
Thanks Bro for checking it out. Hate the shakes in the video. I did not see them in my Goggles... I will try and tune them out on 4.0.4 if they are still there.
Jul 04, 2019, 11:09 PM
Registered User
Love the hangs... if you're up high enough...
Jul 16, 2019, 06:59 AM
Registered User
dp106's Avatar
Hey guys I haven't flown a quad for several years, I used to fly when they were still called quads and not evil drones

Thinking of getting the Kopis 2 and having a dabble again, not sure if I need some batteries as well... I have plenty of batteries but I've been flying planes so most are too big... 5200mah 4S work...??

I have some 1500 3S I think will work, although they're a bit old and puffy so may struggle with the amp draw. For 4S I have one 1800, (I'm guessing the 2200 4s's I have would be too big).
Jul 16, 2019, 08:49 AM
Fan of just about anything RC
SoloProFan's Avatar
Thread OP
Quote:
Originally Posted by dp106
Hey guys I haven't flown a quad for several years, I used to fly when they were still called quads and not evil drones

Thinking of getting the Kopis 2 and having a dabble again, not sure if I need some batteries as well... I have plenty of batteries but I've been flying planes so most are too big... 5200mah 4S work...??

I have some 1500 3S I think will work, although they're a bit old and puffy so may struggle with the amp draw. For 4S I have one 1800, (I'm guessing the 2200 4s's I have would be too big).

If you cut that 5200 in 3 equal size parts, it should be fine.

I would consider consider something between 1300-1500mAh, either 3S or 4S, if you want to keep it as light as possible. Bigger mAh will fly fine too, but you will notice the difference, I think.
Latest blog entry: For the love of the hobby!
Jul 16, 2019, 08:57 AM
Registered User
Quote:
Originally Posted by Dbz619
exploded mid-air? care to elaborate
Haha yeah, two ESC FETs popped while doing punch outs on 6S (~140A x 24V) - I expect it was basically the result of the still spinning motors feeding power back into the system when I cut the throttle, otherwise I donít now. Maybe faulty ESC? Resulted in quite a tumble and a single broken propeller

Iíve replaced the ESC with the 65A ďmetalĒ one from Holybro - hoping itíll hold up better

Waiting for the ESC to arrive, I got the RotorRiot (low kV) edition of the Kopis. Hasnít blown up yet...
Jul 16, 2019, 09:36 AM
Registered User
dp106's Avatar
Quote:
Originally Posted by SoloProFan
If you cut that 5200 in 3 equal size parts, it should be fine.

I would consider consider something between 1300-1500mAh, either 3S or 4S, if you want to keep it as light as possible. Bigger mAh will fly fine too, but you will notice the difference, I think.
Ok, I think the old 1500 3S packs will at least be good enough to get me up and running. Probably better to have less power to start with anyway. Just checking out 4s packs, they aren't cheap are they! Thanks for the advice
Jul 16, 2019, 12:01 PM
Fan of just about anything RC
SoloProFan's Avatar
Thread OP
It already has decent power on 3S, motors and props have good bottom end torque, so it doesn't feel sluggish:

Acro flight with the Holybro Kopis 2 (5 min 29 sec)
Latest blog entry: For the love of the hobby!
Aug 16, 2019, 05:26 AM
"Aircraftus Fragmentum"
kydawg1's Avatar
From last weekend.... my totally destroyed Kopis2 (Thanks Holybro for NOT REPLYING!!!).

I have made it my own with a new FC and build.

2019 #102 Holybro KOPIS2 Rebuild JB F4 V1 Park RIP 2018 0816 (Ethix S4 Props) (3 min 22 sec)
Aug 16, 2019, 11:29 AM
Registered User
Why go from an F7 to an F4?
Aug 16, 2019, 12:20 PM
"Aircraftus Fragmentum"
kydawg1's Avatar
Quote:
Originally Posted by Noircogi
Why go from an F7 to an F4?
Because that was what I had available and I have no need for an F7 as I do not run 32khz and have no need for extra uarts. F4 for me, is fine and works great for my capabilities.
Aug 18, 2019, 02:00 PM
"Aircraftus Fragmentum"
kydawg1's Avatar
Another RIP.... love the power to weight of this beast. Hangtime is awesome.

2019 #103 2019 #102 Holybro KOPIS2 Rebuild JB F4 V1 2019 0818 (Scorpions - Bad Boys Running Wild) (3 min 57 sec)
Aug 18, 2019, 04:27 PM
Registered User
Quote:
Originally Posted by kydawg1
Another RIP.... love the power to weight of this beast. Hangtime is awesome.

...
Try a 1000mah 6S! I calculate it's 2 hp/lb. It's a total beast.
Aug 18, 2019, 05:07 PM
Registered User
Yeah I run 6S 1050 mAh, they’re a perfect fit!


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