How to choose appropriate propulsion system for multi-rotor?

ArduCopter
1

I want to choose the best propulsion system for my hexacopter-x.

frame size : 68.5 inch (measure from motor to opposite motor)

motor : t-motor u8ii kv100
propellers : t-motor 28x9.2 inch
ESC: 60A HV Li-PO 6s-12s
battery: Foxtech, Li-Po 6s 16,000 mAH 24.2V (2.2kg / 1batt.) c-rate:25C , 2P total: 12S 32,000 mAH 50V
T/O Weight : 12kg

  • include motor,esc,prop.
  • with out battery.

For now, I would like to use Diamond HV Series Semi-Solid-State Li-ion Battery 12s 32,000 mah 47.4v
Max c-rate 15c.

https://www.foxtechfpv.com/diamond-hv-series-semi-solid-state-li-ion-battery-12s-20000-mah-38000-mah.html

how I know it suitable for my aircraft.?

if u wanna know more information ,you can ask me.:pray:
thanks

2

I confuse in C-RATE of battery.
how to c-rate of battery which suitable for propulsion system.

3

one word:
ecalc

If I plug in your config, the 6S battery with U8 motors would be lucky to get off the ground - thrust:weight 1:1
With the 12S 3200Ahr you have electric power problems and almost 4:1 so it will be uncontrollable.

You could use the 6S and U8-150, or there’s a million other combinations.

Bigger props are not always better. Go down a size and spin them faster for better stability - would you rather have a couple of minutes less flight time or a pile of wreckage when the wind suddenly picks up? :frowning:

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