I got my dividing head fully reassembled today--normal summer-time distrations have meant that progress has been slow.
I think it looks an awful lot better but, more importantly, everything functions smoothly. The main gear on the spindle has one small chip out of one of the gear teeth. I don't know if I did that or if a previous owner was responsible. Either way, it does not seem to affect function.
Maybe I'm getting dumber as I get older, but I found it unexpectedly complex to reassemble this thing. After a few tries, however, I had managed to stumble into the correct order. The Rucker video helps to show the necessary order.
Anyway, here is a couple more glamor shots:
Here it is in vertical mode with the chuck backplate screwed on:
BTW, I finally figured out that it really does have a Brown & Sharpe taper in the spindle (#10 size). With things clean, I can see that a Morse taper is not engaged at the small end.
I still need to do a couple of things. When cranking the handle, I have to keep the pin pulled out. It should have a way to keep the pin from snapping forward . I've got a plan and I'll post a follow-up if it works out.
Also need to mount a chuck. I have 2 candidates: a 6 inch 4-jaw and an 8 inch 3-jaw. I think I can re-use the chuck backing plate that came with the dividing head but it will have to be modified to register with the chosen chuck. To mount the back plate in the lathe, I'll need to make stub arbor (2.25 inch diameter, 8 threads per inch) which is a non-trivial side project.
The trouble is that I'm not sure that this is the dividing head for me. It is really too big for my RF-30 round column mill/drill. Once the chuck is mounted, it is going to take up over half the available length of the table. And the mill head has to be up near maximum height to clear the dividing head. In horizontal mode, the dividing head spindle centre is just over 5 inches off the table. Vertical mode leaves no room for a workpiece or tools. So I'm toying with the idea of selling this and getting a smaller unit.
Nonetheless, it has been a fun restoration project and I'm glad I was able to pull this old warrior back from the brink of death!
Craig