I am really surprised because I am using a rather tall windshield combination (approaching 10+ over stock) and suffer no back pressure. The vent or relief hole is the stock 'T' shape that CalSci cuts into their 'shields. I can give it a quick measure (easy boys!) and let you know roughly what the opening area is. I would think 3 or more 1" or larger holes on each side of the windshield would go a long, if not all, the way to stopping that vacuum on the backside of the 'shield.
Maybe this is really a KiPass problem? What side do you carry your fob on....
Brian
Left, is that wrong?
Well as we know from reading the various handlebar; windshield; and especially the seat posts. There is
way too much variance in people to have an all encompassing solution to any of these trouble areas. Windshield
problems could be the most difficult to solve because of various aerodynamics changes. It could be (although unlikely)
that if I had a Gen 1 C14 and found a solution and then changed to a Gen 2 that the solution wouldn't work. Certainly the size
difference between the two of us (the group shoot in August will have me down in front and Brian will be
in the back head and shoulders above most.) would account for a lot of our different experiences with windshields.
I'm even thinking that I may need a diverter at the top that will make all (most) of the air spill around the sides
instead of over the top of the windshield. That will be a much later (last resort ) solution attempt.
However to get a little back to on topic (try a windshield for free) this
share program saved me a lot of money
and may have found the best available solution for me. If I can't modify either of my current shields to suit me then I'm going to
try a medium AeroFlow. If that doesn't work then there will be 4 shields in the medium box.