Join Date: May 2010
Location: Springfield, Missouri, USA
You have my curiosity up. I did find an article describing what you started here, heheee. But so far not an add on.
"BMW had obviously tested this windshield for rain during the design phase, and they included the only rain gutters I had ever seen on a motorcycle. When the water ran up the fairing, at the top lip there was a gutter to collect the water, that led to twin tubes that carried the water down to the street and drained it out down there. This feature was not advertised or mentioned at any time in BMW magazine tests, but it was there if you looked for it and could figure out what it was for. If the water is not drained away, it is all driven the the top or sides of the windshield, then around the edge, where it forms large drops which fly off randomly and may hit you anyway."