More wheel thoughts and ramblings.
Clarification. Deep dish rims are a form of box beam. The strength comes from the end plates and the webs. In this case the spoke lands act as one end plate. The rims floor acts as the other end plate. The curved sides of the dish act as the webs. As the webs get taller the rim gets stronger if all other aspects are engineered to the new strength levels. These deep dish rims resist load deformation in a vertical direction much better than a smaller webbed box beam rim. Using my much less than scientific bell speedometer I noticed a 2mph gain in average speed on my rides with new deep dish wheels. I was quite surprised and thrilled with this performance upgrade. I've since noticed this performance gain on other bicycles that had small box rims replaced by much deeper dish rims. For our weight category I suggest looking at the heavier built deep dish rims for performance and safe longevity.