Bit of an update to this. I now have a 220v grainfather. Some comparisons versus my old 120v unit.
120v: no graincoat
135->152* = 17min
152->212* = 44min
120v: graincoat
135->152* = 11min
152->212* = 34min
220v: no coat
135-> 152* = 7:19min
152->212* = 30min
220v: coat
135-> 152 =...