I have been working on a scratch plane that I designed and have a question for you. I'll give you the specs just so you can try to get a picture of it.
Wingspan-41"
Chord-8.25"
Fuse. Length~30"
Motor-Speed 300 3:1
Prop- 9x6 or 10x7

Ok well my questions are, what kind of battery am I going to want, I have a Sky Scooter batter and I tried it out, It seemed to put out a lot of wind but not for very long. It only went for about 2 mins, but I don't know how much power I am going to need and that is another question. Is there any way to know how much air im gunna need to be pushin out? If you have ANY help it would be greatly appreciated. If you need any more info let me know. Thanks all