How Do I Prop Electric For Efficiency
Hello,
I have a Giant Big Stick with electric power. I want to know the best way to prop the plane for maximum efficiency. The plane performs wonderful on my current set up, but flight times are somewhat short.
Here is what I have.
-63mm x 64mm 245kv "160" motor
-10 cell 5000 mah lipo
-APC 19x10 E Prop
On the ground the system pulls around 70 amps, produces7800 rpm and 22 #s of static thrust. The RTF weight of my plane is 14.5#. From these stats you can see that the plane flies with authority. What I'm wondering is can I use a different diameter or pitch prop to allow the plane to fly well while pulling less current? I'm ok with some loss of performance to gain flight time. My thought would be to go to an 18x10? Or would 18x12 be better for higher pitch speed at agiven RPM.
Thanks for your input.