Bill,
When you are straight and level, the speed of the plane increases to it's maximum and would not normally drop off unless you lower the throttle, but when climbing, the plane starts to slow down though you may remain at full throttle. The torque really is not changing much in this example but it is changing as the load on the engine is slowing down the rpm, so if anything the torque and it's effect is getting stronger since most times we prop for top rpm but usually top rpm is beyond the torque curve of the engine, but the speed of the plane is slowing and as such, the torque "effect" becomes more pronounced since the plane is slowing and the engine is getting into it's torque curve. Most engines make their most amount of torque well below the max rpm it can achieve and as such the torque curve actually may drop off a bit once you get past it's peak.
So what you are saying is that as the speed decreases on an upline (assuming the throttle is constant), then the "torque effect" on the plane increase, causing the plane to yaw left?
If that's the case, then I'm confused about torque rolls. Let me see if I can get this right. One way to think about entering a torque roll would be pulling to an upline and reducing throttle until the plane stops climbing. So in this case, the throttle is constant and the speed of the plane is now zero. So why wouldn't the plane just yaw to the left and fall out? Why does it rotate about its length?
(I know I'm going a little off-topic, but as we continue to discuss this I have more questions
)
Thanks again,
-Matt