Help with prop size...

[crudeau]

Sky-wing 200A Water-Cooled Brushless Motor ESC for RC Boat
Constand 200amps, max 210amps, Bec 5amps, 2-6s or 6-22.2volt

with two motor options...

$69 Tacon 4475-9T Brushless Motor 1600KV for 1/8 Car Buggy Truck
ROHS/CE Yes
Watts 2350
No-load Current /7.4V 3.1A
Load Current 115A
No-load RPM 4W
Load RPM 3w
Net Weight (g) 543G
Diameter (mm) 44MM
Length (mm) 75MM
Shaft Diameter (mm) 5MM

or

$60 Tacon 4465-13T Brushless Motor 1400KV for 1/8 Car Buggy Truck
ROHS/CE Yes
Watts 1860
No-load Current /7.4V 2.4A
Load Current 88A
No-load RPM 4W
Load RPM 3w
Net Weight (g) 450G
Diameter (mm) 44MM
Length (mm) 65MM
Shaft Diameter (mm) 5MM

with 2 of these in series for 6s $28 each
77P-SL3300-3S1P-40C-3333-HardCase
Capacity: 3300MAH
Voltage: 11.1V
Size: 138.21 * 46.56 * 31.38mm (L * W * H)
Weight: 317.2g
IR (mohm) 30
Discharge rate: 40C Continuous, 80C Burst.
Plug: 4.0 Banana Plug

I would swap out the 4.0 banana plugs for either 5mm or 6.5mm. But I would get 35k rpm from the first motor and 31k rpm from the second. But the second motor seems to draw less amps. So I think the second option is the better. This is all going in a 32" scorpion. I know I basically have to get a prop and run it to see how it runs, but I am looking to pick up a prop or two to try. So I need to know where to start.

[dana]

I would go with motor option 2 1400kv if using 6s and prolly start with x445 or m445. Jmo