I am curious about the benefits of having wide blades all the way down on an aero fork. For example, Profile has their semi-aero BSC fork with wide blades in the upper portion and then it tapers a little down near the bottom of the legs. Their aero fork, the BDC, is basically the same except that it has not taper and is wide all the way down (it is also a lot heavier). Does it make that much difference to the overall aerodynamics?
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You have to look at the ratio. For example, the BSC blade profile becomes shorter, but hardly narrower. That doesn't help aeroynamics, within the limitations of bike design you pretty much want to minimize the width to length ratio (or thickness-to-chord as is more commonly used). The BDC does this, but an even better way to do this would be to make the fork narrower towards the dropouts but keep the ratio constant, so you keep the good aerodynamic shape AND reduce the frontal area.
Gerard Vroomen
3T.bike
OPEN cycle
Gerard Vroomen
3T.bike
OPEN cycle