In a message dated 2/28/12 5:59:30 PM, cuvee at sbcglobal.net writes: > What the difference between a Flat Crank and a Reg. Crank? > All the rod throws are either at 0 or 180 degrees so when laying on a bench, the crank is flat. In a conventional crank, some throws are at 90 degrees. Cheers- J Deryke