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 can be constant or can come and go. Most often, tinnitus is a symptom of an ear problem, such as: Earwax buildup. Age-related hearing loss . Meniere's disease . Inner ear damage from loud noise . Middle ear damage caused by a sudden change in pressure (barotrauma) Occasionally, tinnitus is a side effect of medication. Aspirin in moderate to high doses often causes tinnitus.