holsgo wrote:Yes, the spring clip clips into the groove in the quill. This clip holds the bearings from coming forward if you were to remove the quill and put pressure on the splined end. What prevents the whole quill from going into the headstock all the way is that raised area behind this collar.. in your pics. As I was playing with my bearing mod I had this collar off and put it on only to hand turn the spindle. Just being clear for the thread originator..you know all of this Dusty.
I find your retaining clip on a 'greenie' interesting. My 'goldie' does not have a retaining ring, but a 2 bearing quill I have does have the retaining clip.
Understand that for the quill shaft to slip into the headstock. it must slip in the inner race. Considerable force is required to do so. The collar provides additional resistance to that shaft in/out movement. My old goldie is loose enough in the bearing(newly replaced) that it slips in fairly easily. The collar prevents that. If it is not attached tight, the quill shaft will slide in and out.
FWIW the outer race is easily sliped also. The collar prevents that also!
I presume if your bearings are wedged in tight enough, the collar does nothing to retain them. That is not the case with my original goldie quill.