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Old Dec 26, 2014, 06:33 PM
GreatMonk is offline
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Help!
quadcopter size 450 flight time so short

Hi friends..

please somebody help me..
I have a quadcopter ( reptile aphid ) size 450 and i dont use that stock servo gimbal.
i already upgrade to :
Motor : sunnysky 800kv
props : graupner 10x5
esc : multistar 30a
Board : naza m lite + gps
gimbal : goodluckbuy gimbal brushless
cam : sjcam4000wifi
vtx vrx : boscam 200mw
batt : 3s 5000mah
overall weight : about 1800g

i have a problem with my flight time with this setup..
I can only flight 2 - 3 minutes...
please help me...how can i increase my flight time to maybe approximately 10-15minutes if possible?
How should I do...

thanks,
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Old Dec 26, 2014, 06:56 PM
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800kv and 3S?
At what throttle does it hover?

Did you plug your parts into Ecalc?
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Old Dec 26, 2014, 07:02 PM
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Quote:
Originally Posted by waltr View Post
800kv and 3S?
At what throttle does it hover?

Did you plug your parts into Ecalc?

Yes i use 3s 5000mah..
is that wrong..?
what recommended batt for sunnysky 800kv?
or maybe any advice..?

It hover at about 55% throttle stick..

What is ecalc?
sorry.. but im new in multirotor..
Please help.....
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Old Dec 26, 2014, 07:09 PM
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Google "ecalc" and then you will know.
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Old Dec 26, 2014, 07:18 PM
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Quote:
Originally Posted by waltr View Post
Google "ecalc" and then you will know.
Done, i already input my spec into ecalc n found the result..
it said that hover at 80% throttle and flight 7-8 minutes..

what happen with my quad.. why only flight 2-3minutes..
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Old Dec 26, 2014, 07:48 PM
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Was the battery fully changed?
Did you run the battery down to 20% of capacity (use 80%)?

Hovering at 80% throttle means there is not enough power. Check to see if a 4S battery works better.
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Old Dec 27, 2014, 01:41 AM
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Quote:
Originally Posted by waltr View Post
Was the battery fully changed?
Did you run the battery down to 20% of capacity (use 80%)?

Hovering at 80% throttle means there is not enough power. Check to see if a 4S battery works better.
Yea fully charge..
i use buzzer at 3.6
and after my quad landing. I check voltage was 3.6
so sad..
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Old Dec 27, 2014, 08:12 AM
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How much additional current does the gimbal and vTX draw? These will shorten the flight time if powered from the flight battery.
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Old Jan 04, 2015, 12:07 AM
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Quote:
Originally Posted by waltr View Post
How much additional current does the gimbal and vTX draw? These will shorten the flight time if powered from the flight battery.
Waltrthanks for helping me..
i separate my primary batt with gimbal batt..
and now i get 8-10minutes..

thankyou so much for your advice..

Is that possible for quad size 450 to have a flight time more than 15minutes?
i calc with ecalc.. i think thats impossible because i must use 16" props.
arm of quad only 45cm..
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Old Jan 04, 2015, 12:36 AM
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What brand and model is your battery, and what's the "C" rating of your battery?
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Old Jan 04, 2015, 02:35 AM
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Well C rating or Discharge rating of battery need to be considered, . If it is not sufficient to provide to the current consumption of your quad, it will discharge very fast, also flying like this is not safe. Do the battery get Hot after flying ?
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Old Jan 04, 2015, 03:24 AM
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Bombs away! Err...landing
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Quote:
Originally Posted by GreatMonk View Post
Waltrthanks for helping me..
i separate my primary batt with gimbal batt..
and now i get 8-10minutes..

thankyou so much for your advice..
That shouldn't give you 2-3 times the flight time. The draw of a VTX and gimbal is usually only a fraction of the motor draw, people usually find no increase in flight time or even lose it using a second battery.
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Old May 09, 2015, 10:08 PM
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I know I'm bringing back an old thread here, but if your gimbal was pulling that much battery its likely you have your PIDs set too high on the motors. If you can get super wild with it and it stays rock solid, then you can lower them down some. You should still be able to "bump" it with your finger and have it move without acting like its being superman holding your camera.
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