What’s interesting here is that there appears to be little convergence from different manufacturers towards an ‘ideal’ design.
I suspect that a good proportion of the aerodynamic work on cycling products (frames, wheels, etc.) is mostly for marketing, and isn’t backed by expertise, testing or CFD remotely approaching the level of, say, Formula 1.
The apparent randomness of aero helmet designs maybe reflects this, and also (of course) the relative lack of resource in cycling product design.
I suspect that a good proportion of the aerodynamic work on cycling products (frames, wheels, etc.) is mostly for marketing, and isn’t backed by expertise, testing or CFD remotely approaching the level of, say, Formula 1.
The apparent randomness of aero helmet designs maybe reflects this, and also (of course) the relative lack of resource in cycling product design.