I did not know that about Mr. Renolds. Isn't it amazing how studying the flow of turds under the streets of London can contribute in no small way to the development of beautiful aircraft such as the Concorde and SR-71.

C182,

I don't think that there is a theoretical mathematical explaination for scale wind speed for a 1/4 scale aircraft. Look at it this way; if you want to fly a 1/4 scale plane at scale speeds, then you'll have to fly that plane at 1/4 the speed of the real plane. So it follows that a 15 mph wind for a 1/4 scale plane would be equvalent to a 60 mph wind for a full scale plane. I think that the guys at the field were only talking about how the wind's speed effects the scale speed of the 1/4 scale plane and they are correct with their math. I'm not sure what more you think there is to this scale wind speed subject or maybe I have missed your point.