Didn't realize Fulcrum was using Campy rims. Agree that the front wheel, 18h radial would be tough to replace. I am more likely to damage the 24h rear wheel so I was looking for a replacement rim to have on hand. I think you are right, the problem is that the Racing Sport is not a retail model so nobody has its ERD listed. I have checked all the rim databases that I can find. Looking at the cross section and the dimensions, I have picked out the Sun-Ringle Venus, Velocity Fusion and DT Swiss R460 as best chance for an emergency laceover.