With switching wheels the weight loss is felt in a couple different ways: Overall weight On a bike that only weighs, let's say, 28 lbs (12,700g) a loss of .9 lbs (410g) is about 3% savings.
A single exposure to a sudden extremely loud noise can also cause tinnitus. A variety of other conditions and illnesses can lead to tinnitus, including: Blockages of the ear due to a buildup of wax, an ear infection, or rarely, a benign tumor of the nerve that allows us to hear (auditory nerve)
Causes of tinnitus. Tinnitus can be caused by damage to the inner ear due to the aging process and exposure to excessively loud noise. The most common cause of tinnitus is damage and loss of the tiny sensory hair cells in the cochlea of the inner ear.