RE: Scale factor and wind velocity
And now, my apologies to Paul Harvey, the rest of the story: after barely escaping with my plane intact yesterday, this afternoon I take it out to the field, where the conditions are definitely breezy, but nothing like yesterday. Off I go, and in no time at all I am having visions of yesterday. As soon as one wheel is off the ground, it wants to roll into the wind. I am not having as bad a day as yesterday, but again I have the strong impression that this plane is way out of trim. But I checked the trim yesterday (by looking at it) and again today before coming to the field, and everything looked OK, and planes just don't go out of trim by themselves.
So I get the plane down safely again, bring it to the pits and have a closer look. This time I see the ailerons are off significantly. I hit the trim button and run all the way to the end, and I am still not back at neutral. I pull the wheels off the aileron servos, rotate them a notch, and now I am close to neutral setting at neutral trim button. Put it up, trim it out and now I'm flying in the manner to which I am accustomed.
My theory is, during yesterday's drive to the field, nephew is curious about my radio, picks it up, starts fiddling with switches. I ask him not to do that please, but see that the power switch is off, so not to worry. (These are electronic trim buttons, not mechanically driven pots.) I have to conclude that in a moment when I was not paying attention, nephew somehow moved my trim settings. So now I have to eat half the words of my previous post. As Emily Latella used to say, Never mind.