[Jeff]

Dave - you wrote-:

" It should be obvious that it you take the backswing to the end you have to have an initial curved path and certainly at the release point the hands are going to go away from that straight line."

Why is there a straight line section in the early/mid downswing - after the initial curved path? What causes it to happen? Why is it not curved during that phase of the downswing?

Jeff.