I've had my super 7 for around 5/6 yrs but I must admit I don't know how the spindle is driven, looking at the Head Stock drawing in the Myford manual I gather the inner part of H80 the head stock gear is driven by the woodruff key H22 but how is the bronze gear on the end of the vee pulley's connected to the head stock gear ? Looking at the head stock assembly drawing the penny won't drop !
Cheers
H