If I'm in the wrong area please excuse me. Newto the forum and just wasn't sure exactly where this quesiton fit. I currently have a 14x6 Master Airscrew on my Hog Bipe with a magnum .91 4 stroke. Iam not getting the vertical i need. At full throttle it will sit and hover with just a little backup (which looks great to everyone except me) but I hav e no thrust to pull straight out. At best I can full rudder and get a lazy hammer head out of it. I was considering a 15 X 4 wide as Ihad a great deal of success with that prop on my .90 UCANDO.

Do you think Ihave this plane underpowered for 3D or is there a better prop selection for me?

Thanks in advance for your help!

Jason