The hole story
I kinda thought the hole in the California Scientific windshield would/might tunnel air directly into my chest. Then I thought about the Aeroflow windshield on my R1150GS and realizied that it too had a hole in the windshield where the two halves (top and bottom) met. Bottom line is that the air passing throught the hole is flowing from the front side (ie. high pressure side) to the rider side (low pressure side). Shortly after passing through the hole, the air is dissipated into the low pressure air directly behind the windshield. Doing so, the vortex that the windshield creates is lessoned. So the bottom line is that you feel less turbulant air on your chest and body and no, you dont feel cold air on your chest.
Price was good and so far, I'm pleased.
Wringing the most out of life above and below sea level.
"09 KLR 650
'08 Harley Davidson CVO Ultra Classic