Help with electrics

[joe.lel]

Is there an equation anywhere or a website that i can work out flight times for a model with a given weight, battery, esc and motor etc.???

I flew a new electric plank today weighing in at about 2lbs, 290w motor and 40a esc, 3s 1300mah lipo.

flew nice but not particularly fast etc, would like to play around with a few numbers to see what i can get.

Cheers

Joe

[cjcj1949]

There is software that people used to use. With lipos and brushless motors though you can make things do what you want. Speed is limited by drag. When force = drag a model stops accelearating. Higher speed means thinner wings usually. Props push the air past at a certain speed. For high speed you need fast airspeed from the prop. High volts or motor kv and high prop thread.

Chris