I've looked thru a bunch of threads, but still don't see an explanation for this that makes sense to me.
I'm just not getting the whole physics/aerodynamics things at work here.
I just bought a barely used Scorpion EXO 1000 helmet off craigslist, to use with my new (to me) 1986 Connie.
I took the bike out last weekend for a shakedown, and with the face shield down on the helmet, I was getting all sorts of wind noise. This is my first bike with a fairing and love the calm pocket of air I ride in. But I don't understand why so much wind noise? When I flip the face sheild up, the noise is basically non-existent. Flip it down and it roars.
Here's what I don't understand. When I owned a CB350 back in my 20s, I rode with an open face helmet, with a detachable windshield (common to the day). Without the face shield (and no fairing), my eyes would water furious (but with no wind noise). With the face shield, no watering eyes and no appreciable wind noise, even though I was still being battered by wind at highway speeds.
Also, when my son had his CB550 and 750, I'd ride them, borrowing his full face helmet with face shield, and rode with no wind noise (still without a fairing).
So why, when I'm sitting in this calm pocket or air behind the Connie's fairing, does wind noise become such a factor when I pull the helmet's face shield down?
Just not getting it. A lil' help?