Hi,
Many thanks for all the suggestions and replies both personal and to the discussion group. I discovered that the nervar cotterless crank takes 122mm chain rings that are obsolete ,but that stronglite 93's will fit and are still available at Harris Cyclery. I did try a 175mm Campagnolo crank as the spindle was Campy compatible but the short wheel base made the foot /front tire overlap downright dangerous. Anyway I am using the nervar cranks and their 50 tooth chain ring with a 20 tooth cog and its Ok for for now as it gives a 67 inch gear. I have a 22 tooth cog on order and it should give me better control in traffic.
Thanks again
Andy