Hi guys, it's me again :)

After braking one of my motors I decided to buy new ones but I don't know what motor to choose:

I've seen this one:

http://www.hobbyking.com/hobbyking/store/__33616__Turnigy_2217_20turn_860kv_22A_Outrunner_NL_Warehouse_.html

The problem is that on the ecalc it says that the hover is at about 67% of throttle.

I have a quadcopter with 3300mAh battery 40C 3s Lipo, 30A ESC with Simonk and a total weight (including the actual motors) of no more than 1,4 - 1,5 kilos and I was thinking to use 10" props.

Please I need help to choose a motor that allows me about 8- 10 minutes of a nice flight with a gopro (not more than 20$ per motor)!!

I would prefer longer time than aggressivity.

Any advice?

Cheers!

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Replies

  • More important are the props you use on the setup to give it more efficiency. Main rules for efficiency in my opinion:

     

    1 Use low KV motors for efficency setups

    2 Motor manufacturers indication of prop size is usually rubish.. you have to test what makes sense and buy the props regarding to your tests. Best efficency I got with SF props compared to E types... as soon as you run your system a lot over 60-70%... the SF becomes far less efficient than the E type prop. As long as you stay around 50% throtle, the SF prop wins big time in trust/power consum.

    3 If a motor is 3-4S... 4S is usually the better setup... so look for a motor that has 3S as max input.. remember that the engine batterie need to prop is oposit. If the manufacturer said: 3-4S Batteries and 9 - 10 inch props, you use the 10 inch on the 3S and the 9 Inch on the 4S version..

     

    Hope that helped a bit

    Jay

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