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Author Topic: 1104 motors but which kv?  (Read 145 times)

Offline aburn09

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1104 motors but which kv?
« on: December 06, 2017, 20:49:40 »
 I'm looking for some new 1104 motors for my latest micro build but I'm a little confused as to what kv I should go for ?
Just as an example if I chose a motor from this Banggood page should I go for higher or lower kv ? Some are around 5000kv where others are 7000kv which should be better ?
I'm going to be running a 3s battery.

https://m.banggood.com/search/1104%20Brushless%20Motor.html

Offline Cheredanine

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Re: 1104 motors but which kv?
« Reply #1 on: December 06, 2017, 21:36:00 »
Props mate?

Offline aburn09

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« Last Edit: December 07, 2017, 07:07:29 by aburn09 »

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Re: 1104 motors but which kv?
« Reply #3 on: December 07, 2017, 06:35:18 »
 Hi aburn09,

Have a look at fpvmodel.com they have dragonfly 1105 7500kv which are awesome on gemfan 2035 quad blades. They are also very well made motors.

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Offline Elmattbo

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Re: 1104 motors but which kv?
« Reply #4 on: December 07, 2017, 07:15:54 »
For 3s I’d say as a rule you’re looking at the ~7000kv ones. I’ve got the 4500kv emax but that’s on 4s.


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Offline aburn09

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Re: 1104 motors but which kv?
« Reply #5 on: December 07, 2017, 07:58:50 »
I already have emax red bottom motors on my 5" and it does give it a nice punch out.......So if I went with the emax 1106 they come in 4500,6000,7500kv I assume the higher kv will give better performance but less flight time than if I went with the 4500kv ?
I will be flying with 3s.......but the set up could take 4s ?  ;)

Offline Elmattbo

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Re: 1104 motors but which kv?
« Reply #6 on: December 08, 2017, 00:20:00 »
Not quite. You need to match the kv with the battery and prop. As a rule, you need to drop the kv with higher cell count batteries or they will burn out with the higher current draw. Also more aggressive props will demand higher current too.
With micro builds, 3s and even 2s can perform really well, particularly since higher cell count batteries weigh a lot more.
However, if it’s 4s your after then you probably need the lower kv ones. I have read people use the 6000kv ones on 4s, but they won’t last too well and you’ll have to be careful with props.


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Offline aburn09

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Re: 1104 motors but which kv?
« Reply #7 on: December 08, 2017, 06:29:40 »
Thanks Elmattbo I realistically will only be using 3s so with the gemafan 2035 as a maximum angled prop I'll be using I'll probably go for the emax 7500kv motors  ~~