ORIGINAL: thebest_102

positive and negatives are dependent on the radio as to what they mean. Now most radios operate under the premise that positive expo will soften the middle of the stick throw. meaning a small stick input results in a very small surface movement. the exponential part then ramps up to the end of the stick movement makes the surface move a large amount. This is less noticeable with smaller number and more exaggerated with larger numbers. All that being said expo settings are like throws in general it is a taste thing there are good starting points but some people like more and some like less. I usually do not use expo on a plane unless I have trouble controlling the plane with good throws. I currently only have expo on my 3d aircraft and on an edf. I use typically smaller amounts than others with similar planes. Once again it is a taste thing. BTW Negative expo would do the inverse of positive and make the stick movement more pronounce at center and then deaden the ends of the stick movement. I can't recall anyone using negative expo but surely someone must use it.