One thing to keep in mind is that inflation also applies to motor ratings.? I am powering my 618 with a "1/4 hp" motor that is larger than the 618 headstock, about as heavy as the whole lathe, and has 4 oil cups.? That 1/4 hp rating is not an "instantaneous" rating, but a continuous-duty full-load rating that will not raise the motor temperature more than 40 degrees Celsius.
