<Dan_Thomas_nospam@yahoo.com> wrote Did a little Googling. Came up with this, which says there were five crankshafts geared to a central shaft: http://shopswarf.orcon.net.nz/chrypen.html Good deal. I think that makes more sense, so they did not have to come up with new connecting rods, and new crankshafts. It would appear that the prior link was incorrect. Not totally uncommon