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Greetings from Russia )
#1
Hi! My name is Sergey, I'm from Russia, Moscow.

I'm making a new Quadcopter DAYA 550 (DYI).
I will be glad to get acquainted and consult with the meeting of DAYA 550.
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  • Carl.Vegas, kaitylynn
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#2
Welcome to the forum Sergey. The DAYA 550 is a very nice folding frame, looking forward to seeing more details about your build.
[-] The following 1 user Likes RENOV8R's post:
  • gdbr
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#3
(28-Sep-2017, 04:55 PM)RENOV8R Wrote: Welcome to the forum Sergey.  The DAYA 550 is a very nice folding frame, looking forward to seeing more details about your build.

Hi! My setup:

DAYA 550;
APM 2.8, M8N 8N GPS;
Mini OSD, 915Mhz Telemetry;

I can not choose motors, ESC and props.

I think these motors:

EMAX MT3110 RC 700kv
JMT hyd 3508 700KV
HYD 3508 700KV
RacerStar BR3508 580KV
Quanum 4010 MT 580KV
GARTT ML3510 600KV
GARTT ML 4108 620KV
Gleagle`s ML 3510 600KV
Tarot 4006 620KV
NoName 5010 750kv


T-Series Carbon props:
1255 T-Motor
1355 Tarot FY680
1455 T-Series S800
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#4
Welcome to the IntoFPV Sergey. So far I am only playing with micro's so I have no input on your motor / ESC & prop choices. Just a word to say that you have found the best forum for multirotor and FPV, and I hope you find the forum as helpful and inspiring as I do!
Windless fields and smokeless builds
[-] The following 1 user Likes Tom BD Bad's post:
  • gdbr
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#5
Welcome to the forum Sergey!

The best combination of motors and propellers is always a difficult question. If you have some idea of what everything will weigh, I'd suggest having a look at possible combinations on eCalc (https://www.ecalc.ch/xcoptercalc.php). It will give you a good idea of the flight times you can expect and if your motors can handle the power.
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  • gdbr
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#6
Welcome Sergey! Many very smart folks on this forum and everyone is very helpful! You will enjoy your time here!
"Damn the torpedoes!!!  Full speed ahead!!!"
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  • gdbr
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#7
Welcome Sergey! I am really looking forward to following your build Smile
SoCal Kaity :D
OMG, no one told me it would be this much fun!  Addicted :)
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  • gdbr
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#8
Thanks friends! Smile
I really hope for your help.
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#9
hi Sergey! welcome to IntoFPV!

Those bigger quads are fun to watch. Being a mini-guy (well I personally am not mini by a long shot  ROFL  but my quads are minis) I am in the same bucket as Tom... I don't really know much about bigger builds, but definitely listen to unseen. He knows his stuff and at times when I haven't listened to him in the past I've regretted it! lol. You'll find there are several great minds here for help Smile I hope you enjoy it!
carl.vegas
Current Quads: Operational: Diatone GT2 200 In need of repair: Bumble Bee, tehStein,  Slightly modified Vortex 250 
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#10
(30-Sep-2017, 11:02 AM)Carl.Vegas Wrote: hi Sergey! welcome to IntoFPV!

Those bigger quads are fun to watch. Being a mini-guy (well I personally am not mini by a long shot  ROFL  but my quads are minis) I am in the same bucket as Tom... I don't really know much about bigger builds, but definitely listen to unseen. He knows his stuff and at times when I haven't listened to him in the past I've regretted it! lol. You'll find there are several great minds here for help Smile I hope you enjoy it!

Hi, Carl. Are there a few guys with a big quad?
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#11
(30-Sep-2017, 11:29 AM)gdbr Wrote: Hi, Carl. Are there a few guys with a big quad?

I've built an F450 in the past and now have a Tarot Iron Man as my camera ship.

The Iron Man certainly counts as "big". It spins 15" propellers on 5010 530kv motors and lots of 4S power.
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  • gdbr
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#12
(30-Sep-2017, 12:17 PM)unseen Wrote: I've built an F450 in the past and now have a Tarot Iron Man as my camera ship.

The Iron Man certainly counts as "big". It spins 15" propellers on 5010 530kv motors and lots of 4S power.

Hi unseen, excellent! Your experience is useful to me. Now I ordered the engines LHI 5010 750KV.
I think the props buy 13 "or 14" and ESC Readytosky 40A.
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#13
Hi Sergey,

750kv sounds a bit high for 14" props and even for 13" depending on the pitch.

What kind of weight are you expecting this craft to come in at, including battery? What kind of battery were you thinking of using?
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#14
(30-Sep-2017, 03:26 PM)unseen Wrote: Hi Sergey,

750kv sounds a bit high for 14" props and even for 13" depending on the pitch.

What kind of weight are you expecting this craft to come in at, including battery? What kind of battery were you thinking of using?

Hi, unsen.
Weight: 1900 - 2100 kg.
Battery: LiPo 4S 6000-8000 mah 40-50C.
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#15
My worry is your motors.

Looking on LHI's Aliexpress page, I don't see any real specifications for the 5010 750kv motors. Searching around a bit more, I find some very similar motors sold under the "Mystery" brand on eBay which list the maximum power rating of these motors as 260W.

If that rating also applies to these motors, then even 13x5.5 propellers on 4S run a large risk of overheating them.

This is always the risk with buying motors from suppliers who do not publish the specifications for the motor. It also makes it impossible to use tools like eCalc to validate the choices you have made for the power train.

Maybe you can ask your supplier for the motor data? They need to tell you:

No-load current (expressed as Amperes and including the test voltage)
Maximum power limit (in Watts)
Winding resistance (in Ohms)
We already know kv (750kv) and magnetic poles (14).

With that data, it is possible to calculate the flight time, battery load, motor power load and thrust.
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