Please help a noob out.
I am building my first drone with these components:
- Flyfish Volador VX3
- Speedybee F405 mini stack
- Avatar HD Pro kit plus ELRS receiver
- Triblade 3-inch props
It should weigh about 155 grams and run on a 4S battery. I’m stuck between 1404 4600KV and 1404 3800KV motors.
Will 4600KV give too much power and fry the motor/ESC or drain the battery too quickly? Will 3800KV feel sluggish, though better for battery life? What’s everyone else using for similar builds?
And what flight time can I expect with a 550mAh/850mAh 4?
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I use 1404 4520kv motors on my 3" 4s Apex with a Vista. A full chooch pulls approximately 38a. I would not go below 4000kV. I am at 249g AUW with a 450mah battery. And I believe the Volador weighs around 10 grammes less.
I have the same motors/props on my analogue Tiny Trainer, the same 4S batteries, and an AUW of around 180g. That thing rips and makes the Apex feel sluggish.
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Opt for the higher KV motor and test it carefully. You can use a throttle cap to lower the voltage if 4600KV is too much.
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My main concern with that is am I going to push the motor/esc too much. If the drone is heavy, with a big battery and aggressive props and they’re still fighting to spin at a higher rpm, am I likely to fry them, or am I overthinking it and they’re more than capable of handling it?