How to set the gearbox to drive the leadscrew ?

Jim Hawkins · 2007-12-17T13:31:17+00:00

Sounds silly, but I've only just got this Super 7 with Q/C gearbox, and thegearbox manual is decidedly sketchy and not much help to someone unfamiliarwith the gearbox.As received, my lathe was obviously last used set for ordinary(non-screwcutting) work. The leadscrew is quite free to be turned by aspanner on the Simmonds nut (no handwheel is fitted).But I can't see (or learn from the manual) how to set things so that theleadscrew is driven by the gearbox.I seem to have tried all combinations of lever settings, without success.What am I missing ?Jim Hawkins