I have a Tower Hobbies 40 trainer with a .46 engine. I currently have a 10x6 prop on it, which I've had on it since engine break-in (well, not exactly the same one, but the same size anyway )

The vertical performance kind of sucks right now - it slows down pretty quick if I try and do a large loop, even at full throttle.

I've only been flying for 4 months or so, so I'm not familiar with all the variables, but I understand the pitch on the prop has something to do with either speed or thrust?

I think 10x6 is probably at the small end for a .46. If I replace it with a 10x7, 10x8, or 11x5, will I get better thrust and therefore better vertical?

Thanks!