09-01-2018, 01:39 AM
Learned two things last month. 1) I should taken my HJC to the rally instead of the cheaper Bell helmet; it's quieter. 2) While the Griso is not really a quiet bike, up to around 60mph (with my silicon ear plugs and the Windjammer (https://www.amazon.com/WINDJAMMER-REDUCE...met+skirt) things were pretty darn quiet.
Explains why I didn't wear ear plugs bag then - was not riding fast enough!
With speed comes a lot of turbulence, the source of 95% of the noise I hear. If I could seal up the area between the helmet and the collar - basically wear a space suit; a bunch of noise would go away.
Second source seems to be some turbulence on the side of the helmet and it varies depending up the direction of any wind. The HJC may have been better - even though I've had that problem with it too.
The Griso has a Givi 770 bikini fairing on it so air hitting the helmet is pretty clean, near as I can tell. The shock wave of air that spills off the fairing seems to hit me in the upper chest area.
Explains why I didn't wear ear plugs bag then - was not riding fast enough!
With speed comes a lot of turbulence, the source of 95% of the noise I hear. If I could seal up the area between the helmet and the collar - basically wear a space suit; a bunch of noise would go away.
Second source seems to be some turbulence on the side of the helmet and it varies depending up the direction of any wind. The HJC may have been better - even though I've had that problem with it too.
The Griso has a Givi 770 bikini fairing on it so air hitting the helmet is pretty clean, near as I can tell. The shock wave of air that spills off the fairing seems to hit me in the upper chest area.