ORIGINAL: bigcam
As part of this discussion, I am also wondering about L_R thrust. I am flying an newly built Goldberg Extra 300 with an OS 1.08 engine 15x8 prop. When I pull into a vertical upline as the plane goes up vertically, I must continue to add L rudder to keep the vertical straight. The higher the plane goes( and the more it slows down], the more rudder I must add. Is this an indication of the wrong thrust angle or what is causing it?
That makes me think it has too much right thrust angle. It it's trimmed to fly straight at speed in level flight where not just the prop wash, but the air it's moving through also determines the trim setting, then when it slows in the vertical with the engine still at full and only the prop wash (at a lot of right angle) is now the only air hitting the tail feathers, the trim would now not be enough and causes you to add left rudder. That's what seems logical to me. Anybody else got ideas?