Cerberus Trifecta - Cerb v2 newbe build

Futuramille · Jan 13, 2018

if the weather permits tomorrow, I'm taking the new pack, the laptop and the 5" to tune it. we'll see.

Futuramille · Jan 14, 2018

wow, page 20...
more a blog than a build but we've covered some key topics that anyone can use.

last night i realised i hadn't setup the runcam swift from stock settings. got that fingered but the saturation today was too high so I'll adjust that tonight. 5" Testing went well today (i only have 4 batteries, two - 75c 4s 1300mah tattu and two - 95c " " ") but its tighter now. vid looks better and its fast.. errr... real fast.

Futuramille · Jan 14, 2018

i made significant adjustments.
rate went from 1.0 to 1.3
P on R&P raised 18
I on R&P raised 15
D on R&P Raised 22ish
all done 5 points at a time after i rounded out the originals.
it finally started getting snappy so I cut super rate from 70 to 65.... ran out of batteries. it was a boring wide open spot to fly. ill post a vid

Futuramille · Jan 14, 2018

Futuramille · Jan 14, 2018

you can still see the "drift" at 1:40
any suggestions?

Futuramille · Jan 14, 2018

another good point is i don't have sound and should.. so i still have work to do

Wayno52 · Jan 15, 2018

Just a thought for you Futura, what props are you running? I had similar drift with dal 5045’s and it is much tighter with 5050’s. Not perfect but definitely better. Downside is runtime is less but not by heaps. I’m sure messing with pids willl eventually get it really tight but props for me made a difference.

Futuramille · Jan 15, 2018

funny you should say that.. it is indeed DAL T5045. .. and an order for eight sets (four red, four black) just shipped today.

Futuramille · Jan 15, 2018

granted, it was 56deg f out but the motors never even got warm. came back cold to touch

Futuramille · Jan 15, 2018

i have immediate (first notch) throttle response. i raised the engine iddle to 4.8

maybe i should raise more idle...

at what point in low throttle, do y'all expect the quad to balance on the ground? (level horizon). harder to tell if you don't fly with underslung batteries. these start with a lean... spin up and level horizon before takeoff.
maybe i should raise idle to 5? what's the reasonable range? 4.5 -> ?

VirtueViolater · Jan 15, 2018

Wayne is right about the props, try 4 blade props for more stable flight

Wayno52 · Jan 15, 2018

Yeah great point Virtue 4 blade is a great option too. I fly with all packs underslung now and I have lowish idle rate. But I do have to sit it in almost a little hole or thicker grass to start off. If I land mid packs I have to level it back up which is a bit of a pain.

Futuramille · Jan 15, 2018

I'll try but don't think that's it. (blades)

good question.. in the vid.. do y'all see the drift or am i being picky and the size difference is in play. the 3" feels so locked in after moves but.. it's smaller. the drift on the 5" is really slight.. can it get better?

Wayno52 · Jan 15, 2018

Never stop trying to get that bird to fly to you exact liking Futura. It will just be a matter of trial and error until you get it right for your style. I still have drift on mine but I am ok with that at the moment.

VirtueViolater · Jan 15, 2018

4 blade props are super stable, i use them for proximity and 3 blade for more open flight

HighTechPauper · Jan 15, 2018

Seems like the drift may be the difference in inertia on the bigger quad? I know it is throwing around a lot more weight. Looks pretty good to me and I had a timestamp to go by and could still barely tell that it was there.

Futuramille · Jan 16, 2018

it needs to fly the same as the others... just bigger. I'll get there (tighter) but .. it does fly well thanks y'all.

I'm starting to think your right tech. the difference in flight envelop is ... er.. more

still can't help but feel I'm a bit behind in the controls.. always compensating and that's not right

this should get "locked in" as much as the mini.. and then some... really? its good but not locked in.. very hard to articulate i guess. even with a video. you gotta feel it to make sense