What’s your educated guess to the time difference in a half IM on a P3?
Zipp 404 front and back vs. Renn 575 back, Zipp 404 front
I had a soft copy somewhere of an article by Jim Martin who estimated a disc/trispoke vs two trispokes. Seems to me it was something like about 15-20 seconds faster over 40 kms. The 404 tests simiiar to a tri spoke so it shold be about the same ball park.