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)
Tinnitus is not a 'phantom sound'. There is real neural activity in your brain that you are hearing as your tinnitus. CAUSES. There are many causes of tinnitus, and often the cause is unknown. Just about anything that can cause hearing loss can also cause tinnitus. The most common causes are: Noise exposure (e.g. from shooting or machines at work), a natural part of the aging process, head injury (e.g. from a car accident or fall), as a side effect of medications (e.g. aspirin). Tinnitus is almost always accompanied by hearing loss. If you have tinnitus, you should have your hearing tested by a hearing health professional. Some 30 million adults suffer from persistent tinnitus (it can also affect children). For 12 million, the problem is severe enough that it impacts their everyday life.