If anyone recalls from a previous posting on here, I have been concerned recently about the state of my ears (yes they stick out more as I lose my hair!lOl ).
Hearing issues started after 2 particularly severe bouts of hay fever late this summer whilst riding home after a long day in the saddle. This manifested itself as pressure in my inner ear leading to increased sensitivity to resonance whilst riding my bike. Filling up on anti-histamine tablets, whilst important for safe riding, may have compounded things? They say this about drinking alcohol before or during a loud rock concert. Whatever the tipping point, the result for me has been the mild onset of tinnitus. I say mild because I only notice it when I wear earplugs in bed or it is exceptionally quiet, and thankfully it is not severe enough to cause madness…….unless I am already!
As a result of this I started a program of silencing my bike, although this was only a part of the problem (more on this later). The first casualty was my beloved Stealth can. Yes, I miss the awesome sound, instant grunt, and sense of not needing to change gear much, but it was an obvious target, even if it is not the primary cause.

I may bring it back if I can get a decibel killer design installed, and I may experiment with other damping devices. I fitted a standard XB12R muffler with valve closed, which is significantly quieter at semi-legal cruising speeds. The air filter has also been returned to a standard paper element, and the air-box has had sound deadening pads attached (to hell with weigh saving). As friends will testify, the only sound now as I pass them is the deep bark from the muffler’s exit pipe!
One of the most significant changes has been to my crash helmet, going from my Arai Freeway with goggles to a more streamlined (and cheaper!) SPADA open face with flip down visor (although to be fair Arai make something similar). With a quieter bike, the differences in helmet and eye protection with regard to wind noise were much more noticeable. So this is where I must focus on improvements before unleashing on my Buell.
I had been reading about tinnitus on the web for some time, but It was not until this week that I finally consulted my GP for some advice. What he said was interesting and seems to match my experiences.
He said that a blocked nose from hay fever and changes in pressure in the tubes leading to the ears will make me more sensitive to resonance through the skull. This would also follow when wearing ear plugs, although ear plugs will ultimately protect your hearing. Not blocking your ears would cut down skull resonance, but leave you open to the problem of wind noise. This is where helmet design and bike come into play, because when I started to notice problems, resonance from my helmet and skull into my head felt more of an issue than wind noise on the outside! Prior to this I seem to have been able to maintain a comfortable pressure in my ears, where no one source of noise felt uncomfortable. Although I could still begin a ride feeling comfortable, the onset of resonance was becoming quicker and more prevalent.
Resonance through the skull accounts for more noise than many of us suspect, and obviously a big resonant machine like a motorcycle will be significant in this. Even when on my little SRX400 with standard muffler, I can open my mouth and pop my ears to hear the noise of the valve gear coming out of my mouth

(the engine is rigidly mounted to the frame).
A friend had some high tech earplugs which have small tubes to the outside to equalise the pressure (I wish I knew what they were called), but these are definitely next on my list.
My GP did console me by saying that he would be more worried about permanent hearing damage if tinnitus had occurred only one ear, and I could expect changes as I get older. Although he was not familiar with motorcycling equipment, he confirmed that I was doing the right things to manage protection of my hearing.
Now I’m looking forward to trying out my new SHOIE J-Cruise lid.
