I don't know how many people look in the classifieds but I have a set of 150mm Dura Ace cranks and bb up for sale. I can't recommend short cranks on recumbents enough. I'm only selling these as I thought they where at least 170mm and spent nearly £400 on a set of TA carminas in 155mm before the trike turned up, something I woudn't of done if I knew these where shortened to 150mm.