"Wife asked for a new meat grinder with electric motor. I saved some money and made one from hand-powered grinder and drill. The best part is that I was allowed to buy a new drill and leave the old one for meat grinding."
For a different spin on this kludge, get rid of the wheel and belt and attach the spit directly to the motor. Then, depending on the motor's RPM, your pig roaster turns magically into sideways bacon-flavored eggbeaters.