Boxerworks.com

tsa wrote:One reason you may experience buffeting behind the RS screen, could be the relatively lower air pressure that builds up behind the fairing at speed, which IMHE tends to distort the laminar airflow above the screen into a turbulent slipstream that may hit the base of your helmet. As an experiment, I just removed the parking light assembly - to allow air getting into this low-pressure area - and it seemed to reduce the buffeting I experienced. Perhaps worth trying, since it doesn't involve cutting off bits that cannot be put back onto the screen again.

The parabellum has a duct cut front lower centre. There are a variety of ways to add a duct. I have no idea which is best as shape and position varies. A true naca duct would be a little tricky to do well.

Some good food for thought and experimentation....

I have a Paraebellum like one in your pic with the cut out at the bottom...I use it only for really cold weather but it works well in those conditions and no buffeting for sure. It's too tall for me so I cut about 2 inches off the top so I look over the screen rather than through it....it works fine but it's but ugly...

So, going to cut a duct in the spare, old RS screen I have first and see if this reduces buffeting at chin/neck area...will do this before I remove any off top off screen. Will report back...

Been terrible bloody weather for April....rain, cold, wind and more rain....not my idea of riding weather as I'm getting spoiled in my older age ha. But nice few days coming up so will get at it.