Hi everyone! I'm planning to make an autonomous 680 size hexacopter that could lift a load of approximately 5-7kg and fly for about 20-25 minutes! I just need suggestions for choosing the motor and the battery. I need the hexacopter to be user friendly so anyone with less experience can fly it so please suggest a flight control board!

Thank you!

Hi Naveed,
Welcome to the forum. First of all, for a payload of 5-7 kg the hexa has to be much larger. It has to accommodate around 17-18 inch propeller. A 680 hex can't accommodate that. Think of something bigger like Tarot 960 or Tarot X6 frame.
But the most important thing is the budget. How much are you ready to spend maximum?

Budget is around 50-60k. I need to buy only the motor battery and flight controller

Motor , battery and flight control**

My parts recommendation
Go for multistar or tarot 320kv motors
30-40 amp escs
Apm or pixhawk as fc
16 inch props
And 6s 10000 to 20000 mah battery
I thinks it's best that you make the frame by yourself as buying it will only result in increase in budget
There are many other combinations out there.. you can select any one
Happy building
-Darshan

Quote from: Darshan for multirotors on August 11, 2015, 05:39:41 PM
My parts recommendation
Go for multistar or tarot 320kv motors
30-40 amp escs
Apm or pixhawk as fc
16 inch props
And 6s 10000 to 20000 mah battery
I thinks it's best that you make the frame by yourself as buying it will only result in increase in budget
There are many other combinations out there.. you can select any one
Happy building
-Darshan

Darshan why would someone after spending so much on but quality motors and FC risk all these expensive stuff on an untested homemade frame?
And Naveed what are you going to us the hexacopter for? (5-7 Kg seems a lot) Is it for aerial videography?

Thank you Darshan! And himadri roy I'm planning to use my drone for agricultural purpose !

Thats quite a good thought of using it for such purpose!
If you can spare a few more bucks then go for tiger motors
http://www.rctigermotor.com/html/products/ they are quite costly but offer the best efficiency!

Well since Naveed has a budget of around 50-60k, I would also suggest to go for T-motors. But 680 frame can not be used with a 320kv motor and 16 inch prop as Darshan suggested. It can accommodate max 13-14 inch prop.

I found only one Tiger motor dealer in India so I will
By from Rc Hyderabad. I don't know how to order it from outside as o have no idea about customs. Meet2ami I will be making a custom made frame

Sorry to be not clear
I meant that you can get the frame done from somebody like satya sir (if he makes those large hex frames)
By the way which tiger motor are you talking about?stats?kv?Please post pink if possible

I guess he is talking about this MN4010-KV370 motor from RC Hyderabad.
You can use 13-14 inch prop with this motor with 6S, but keep in mind, no way you can achieve to lift a payload of 5-7kg with this and 680 frame.

http://www.sp4mm3r.com/tigermotor4010.html

I'll change the frame size   . And meet2ami you are right

Naveed, on the first post you say, that this platform need to be able to lift a payload of 7Kgms , if that's the case none of the above suggestions are gonna work. But by 7Kg , if you are meaning all up weight (AUW) , then its ok. Whatever your requirement and application is , just make it clear. With that, I hope members here can help you out to select a good setup. I can also help you with that.

My suggestion, if payload is the primary criteria, then go for a 960 frame, 320-340 kv motor and 18 inch prop and 6s lipo. This would give you a AUW of around 6 Kg. (not payload). But lifting a payload of 7 kg means the AUW goes to around 10-12 kg depending on the setup! Which is very difficult to achieve.

Good to hear about the purpose . Best wishes from here . Go  for dji  a2 or zero's f.c.

You could use 16 motors on a 1200 - 1500 size octa frame and on battery go for 2x tattu batteries of 22 aH

I mean 1550 arm length.

Yes meet2ami I agree with you
And that might result in increasing number of motors and hence resulting in making an Octocopter to get the required lift

@Tanmay You are correct but practically it is very difficult. Can you imagine the cost? 16 motors, 1550 frame, 2 x tattu 6s lipo, 16 props, DJI A2 fc!! Naveed mentioned his budget is around 50K.

I'm really happy to see guys help me out! I really appreciate the help ! The TOTAL WEIGHT I need the aircraft to carry IS AROUND 5-6Kg. If its possible to make an octacopter to meet my requirements I will make it! I'm just confused between DJI NAZA and PIXHAWK. Which one should i choose buy beacuse I want it to be easy to fly autonomously by anyone with less experience. And which company lipo battery should I buy with what mah and C rating? 

Also check DYS d4215-21 650 KV motor... will give 2.3KG thrust with 12" props and 6S battery....

regards

Naveed 5-6 kg AUW is quite possible. You can also use the above motor mentioned by Gunnu if you want to use a 680 frame. But I would suggest lower KV motors with larger props and a bigger frame as this combination will provide longer flight time and higher thrust than higher Kv motor with smaller props.

I have found few low kV motors just don't what brand should I go for!