Wow! This isn't grandpa's old Shopsmith
Actually, it is. I’m the grandpa, and I’ve owned this Shopsmith since ‘83. Through the years, this original 500 model has been upgraded, first to 510, then to 520, and now to the ultimate upgrade, the Power Pro. What is the Power Pro? Simply put, this is a headstock powered with a DVR, digital variable reluctance motor, whose performance goes beyond that of DC and AC variable frequency motors. The heart of the motor is a computer controller that can switch magnets on and off several hundred times per second. The Power Pro can be run on either 120 or 240 volt without changing any internal connections. It simply can sense what voltage is coming in. While the old Shopsmith head...
