FE calc with twin motors

[skidooguymxz550]

anyone know how to make this work? i wanna figure out some stuff for the apache but i'm clueless on how to use this tool with twins. do i double rpms or prop diameter?

[ReddyWatts]

Try this, it should be in the ballpark. Do your regular calculations with FECalc for a single motor setup.

Reduce the FeCalc amp calculations by 20% for twin motors.

Add 20% to your calculated single motor speed for your twin speed.

Remember to always start with a prop smaller than calculated and work your way up by watching your amps and temps. FeCalc is not an exact science.

Strut angle and number of motor poles will effect these readings.

[skidooguymxz550]

thank you sir