I have a full face helmet I only wear when it's cold, but it seems I only noticed this issue after doing the dyna conversion.

As odd as it sounds (no pun intended) when I wear my full face I seem to have a ringing in my inner ear that is more of a "tick tick tick tick" to the RPM of the engine as if I am riding with my ear stuck to the side of the engine.  It's not a ringing that persists when I cut off the engine because i have inner ear issues (I don't), it's only active when the engine is running and I am riding, and speed or the angle of my head to the wind has no impact on dissipating the tick.

It's as if the frequency of the exhaust noise is reverberating up into and around inside the helmet and concentrating on my inner ear (if you kinda think of a satellite dish concentrating a signal towards a center point...which in this case is MY CRANIUM).  

Anyhow, I am going to try riding with ear plugs and see if it makes a difference.  If not, I don't know what to do as it's tolerable for the 10-15 minute ride to work and back but It's enough to be really irritating for anything more than that.

When I ride with my polo helmet it's fine and I don't feel anything at all, be it idling at the house or a stoplight...and of course nothing at riding speeds because the wind over my ears drowns everything out anyway.

Do you think aliens planted a probe in my head and the exhaust frequency is interrupting their transmissions?

Serowbot wrote on 10/24/14 at 17:48:52:

I...just...don't...know...what...to...say...about...that...

my chin strap has a snap but that doesn't mean it couldn't be flapping...though i don't think that's it. if i ride this weekend i will definitely be investigating things.  my head hasn't `sploded yet, but if yall don't hear from me in a few days send a bambulance.

I was given an old Simpson car helmet when I first got my Savage, and it was loose around the neck area and definitely concentrates the engine noise to my ears.  It was really bad when the headlight bucket was rattling.  (Check you headlight and speedometer by putting your hand on them and see if the noise goes away).

My new full face helmet is a tighter fit and is not as noisy - but I always wear ear plugs when I ride more than a couple of blocks.

Ooooooh... sounds like a loose wax problem...

Get an earbulb squirter, and squirt warm water in there...

...once you get it out,... smear it on yer' belt to quiet that...
Win win,,,... ...

Regarding HJC quality,, I Impact Tested one. The chin cover and shield were put to the test. I went face first into the cab corner, after my head slid down the top edge of the bed, I got 2 stitches in my lep, because the chin guard flexed in,, and the strap pressed into my throat so hard it was still a reminder 3 weeks later when I swallowed. If I had been wearing something other than Full Coverage, my face woulda been packed in, at best.. Dead becomes a possibility,,

BUT
The first time I totaled a bike, if I had been wearing any helmet at all,, I would died,, I still cracked 3 vertebrae in my neck,, not to be diagnosed for many years,, But the helmet would have been a fulcrum between shoulder and neck, and done what the hangmans noose is supposed to do.


2nd total,, no helmet,, didnt hit my head,, so,,

Ya pays yer money and ya takes yer chances,, BUT,, I wont ride w/o a full cover hat.. and gloves and boots..