Originally Posted by
speedracerntrixie
Of course it will make the airplane yaw but that is where your logic ends. The yaw force applied equals the force applied by the cross wind thus end result is an airplane fly's a strait path while being rotated a few degrees nose into the wind. This is possible with a model the exhibits pure yaw control.
So you think a crosswind makes a model yaw, and that you can correct that by keeping the rudder deflected? How would a crosswind do that? (Answer: it wouldn't) The yawing force changes the plane's heading. A crosswind doesn't do that: It carries the plane in the direction in which the wind is blowing without changing its heading.
You are right in saying that once you've yawed the correct amount, the plane will fly a straight path with its nose a few degrees into the wind. My point (and others') is that, once you've made it yaw the right amount, you have to stop yawing, either by returning the rudder to neutral or by using the ailerons. You probably do that without even thinking about it. If you don't do one of those things, the plane will keep yawing.