Hi!! Noob here, help please!! I need some advice about motor choice.

Chance

Chance

New Member
Hi!! Everyone I need some advice

We are building a f450 quad can someone suggest a good motor/propeller for it we're trying to achieve the longest flight time using a 5000mah 3s battery why this batt. its because it's the only one we can get for a reasonable price here in our country we estimated the quad's total weight to be around 1250 to 1400grams. I have a racestar 2212 1400kv motors here from our first failed attempt hahaha!! yes it is powerful but It's too power hungry so please any advice would be helpful.

Thanks in advance!!!!
 
Chance_Ichi

Chance_Ichi

Member
BL Swagger said:
Racerstar 960KV Motors or lower KV will do the job. I am using these on a 450 build right now as well.
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Hi! This is me the guy that posted this I can't reply to that account because I used my Facebook to login and the email I used there doesn't exist anymore

Thanks for your response :):)

I looked at the motors that you suggested and according to the chart it gives 708grams of force at 9045 props will this be enough for my quad
 
BL Swagger

BL Swagger

Well-Known Member
Lower KV will be even better.

RENOV8R said:
You want a 2:1 lift ratio so 708 X 4 = 2832g. With a 1400g craft this is very close
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Maybe you can clear something up for me as well since were on the topic.. using these 810KV motors as an example, is the load current provided in the description for one motor or all four? If it is for one, I would imagine the ESC would become the limiting factor if not above 40A.

(Load current is roughly 13-16A depending on props, according to the chart provide in item description)
 
Chance_Ichi

Chance_Ichi

Member
BL Swagger said:
Lower KV will be even better.


Maybe you can clear something up for me as well since were on the topic.. using these 810kv motors as an example, is the load current provided in the description for one motor or all four? If it is for one, I would imagine the ESC would become the limiting factor if not above 40A.

(Load current is roughly 13-16A depending on props, according to the chart provide in item description)
Click to expand...
Can you explain why lower kV is better?
 
Chance_Ichi

Chance_Ichi

Member
Which one is better Racerstar 2312 960kv or this Racerstar 2216 810kv I think we need more thrust because that battery we are going to use is more heavier than expected so the final weight of the drone 1500g and we don't want to go heavier than that

Sorry for the stupid questions we really don't want to waste time and money for parts shipping fees here are ridiculously high
 
BL Swagger

BL Swagger

Well-Known Member
Chance_Ichi said:
Which one is better Racerstar 2312 960kv or this Racerstar 2216 810kv I think we need more thrust because that battery we are going to use is more heavier than expected so the final weight of the drone 1500g and we don't want to go heavier than that
Click to expand...
Racerstar has all sort of options. Those 810kv I provided as an example for a question will work better for your case. What esc are you using? (20, 30, 40amps?)

The trend is lower KV, bigger quad.
 
mozquito1

mozquito1

Well-Known Member
Bit late with this but at a price you don't mind shelling out for if you kill one.
I like my RS2205(S) still...
 
Chance_Ichi

Chance_Ichi

Member
Hey!!! Guys Thanks for your responses:):)

I think this is my last question, Hopefully

Before I order this Racerstar 810kv motor I want to know how much will the thrust decrease if I use a 1045 props the charts says 832g on 1147 props?
 
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