ORIGINAL: krashkart
Well I am confused now.
Motor Calc, the demo version, showed the 10x8 as the ideal prop when configured with my plane, my attitude and the other variables.
But when I put the 10x8 prop on the plane on the bench to test with the watt meter I show 19.73 amps peak at full throttle and 227 watts running the 3s battery.
Now you see why a lot of us don't rely too heavily on the apps.
But don't be confused about one thing. $40 for an app isn't going to save you any money on props.
You don't mention it, but did Motor Calc predict the watt meter readings? If it did, then try again and check that you got all your input correct. And look carefully at the input you didn't do. Most apps I've used have proven to be worthless unless the motor I plan to use is listed exactly.
I'll try to find that app I used the last time. It's predictions were spot on for the few props it had that I had or could find. BTW, I wound up using a prop that wasn't on it's list.