Noise in Front Suspension

Nope, this is a heavy knock just like 2 solid pieces of the suspension are coming together.. think about 2 layers of paving and the top one has come off. The thickness of the drop is about 1 inch or so. As the right front wheel drops off the edge into the depression it knocks, just like slack in a ball joint. then it does it again when you come out of the depression. Its driving me nuts. I know that with that noise there is something thats going to break one of these days and I want to find it before it does break on the highway at 75mph or so...