vein in windport.

[bobbyperry]

i use my ibike from TT bike to standard roadie to mtb. how important is the little green plastic vein in the wind port? do i need to put it in?

[Velocomp]

In our most recent testing we have determined that the wind vane is optional for most ride conditions.

[ronpei]

out of curiosity when is the vane most important and what is the effect in the case where it makes a difference? For instance i was thinking about this yesterday while riding in a really strong cross wind (50 km/h with gusts coming from a yaw angle nearly 15-45 deg).