To: All. .. .Some of the explanations made in this thread to either support centrifugal force as a real force or to say it is an apparent force make my head ache. This thread has made me both unhappy and happy at the same time. Unhappy for having started the thread with limited understanding of the subject and happy, that I majored in Industrial design as opposed to engineering.. .. .Each of you has expressed your opinions and from your individual perspectives you are all right. Helmet Fire summed it all up in explaining the difference in how the subject is taught both in the UK and the States. The Brits explain it in engineering terms and in the States they use (by comparison) a more simplistic approach. The pilot in the UK understands how his helicopter flies and the Yank pilot understands how his helicopter flies. Then they both go to work and completely forget what they were taught. That is until a Troll like me opens the subject on an open forum.. .. .What I would like to say is that the words of Helmet Fire about different teaching methodologies between the Yanks and the Brits are exactly what I was trying to say relative to gyroscopic precession Vs aerodynamic precession. Both are are correct it just depends on where you are from.