This is why I ride a sportbike.

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Wear earplugs for motorcycle riding


Noise is measured in units of sound pressure levels called decibels, named after Alexander Graham Bell, using A-weighted sound levels (dBA). The A-weighted sound levels closely match the perception of loudness by the human ear. Decibels are measured on a logarithmic scale which means that a small change in the number of decibels results in a huge change in the amount of noise and the potential damage to a person’s hearing.

OSHA sets legal limits on noise exposure in the workplace. These limits are based on a worker’s time weighted average over an 8 hour day. With noise, OSHA’s permissible exposure limit (PEL) is 90 dBA for all workers for an 8 hour day. The OSHA standard uses a 5 dBA exchange rate. This means that when the noise level is increased by 5 dBA, the amount of time a person can be exposed to a certain noise level to receive the same dose is cut in half.

The National Institute for Occupational Safety and Health (NIOSH) has recommended that all worker exposures to noise should be controlled below a level equivalent to 85 dBA for eight hours to minimize occupational noise induced hearing loss. NIOSH has found that significant noise-induced hearing loss occurs at the exposure levels equivalent to the OSHA PEL based on updated information obtained from literature reviews. NIOSH also recommends a 3 dBA exchange rate so that every increase by 3 dBA doubles the amount of the noise and halves the recommended amount of exposure time.

Here’s an example: OSHA allows 8 hours of exposure to 90 dBA but only 2 hours of exposure to 100 dBA sound levels. NIOSH would recommend limiting the 8 hour exposure to less than 85 dBA. At 100 dBA, NIOSH recommends less than 15 minutes of exposure per day.


In 1981, OSHA implemented new requirements to protect all workers in general industry (e.g. the manufacturing and the service sectors) for employers to implement a Hearing Conservation Program where workers are exposed to a time weighted average noise level of 85 dBA or higher over an 8 hour work shift. Hearing Conservation Programs require employers to measure noise levels, provide free annual hearing exams and free hearing protection, provide training, and conduct evaluations of the adequacy of the hearing protectors in use unless changes to tools, equipment and schedules are made so that they are less noisy and worker exposure to noise is less than the 85 dBA.

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Remote key battery replacement of 2007 Honda Civic

It requires a small Philips driver to loose one screw.

The battery is CR1616 3V.

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Orbiter 9 movie

Director Hatem Khraiche

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Usana – Healthpak – 56 ct

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Why I haven’t dated with a girl seriously?

This is my honest answer to the girl I just dated for one hour. Maybe I meet her again, have more memorable time together someday who knows.  It’s uncertain because everyday I wake up in the morning I have two days to live. It sounds strange but it’s how I perceive and do for the living for many years.

Lovely, beautiful people come and go. I’d rather not to control or influence over others’ lives. Why should I! My understanding of loving somebody is to give freedom at any cost which is challenging in every moment.

About ten years ago when I was middle of 30s, I met a beautiful, energetic girl that crashed on me freaking hard.  Coworkers and neighborhoods expected for us to be a nice couple. But for the whole period, about half year, I never had a sex or kissed her. Why did I do such strange action?  Honestly while I was dating with her almost every few days per week, I discovered intoxicating, deadly beauty of female being, living, breathing, complicated, unpredictable universe. I was so afraid of being consumed by beauty and pleasure from her and it had made sleepless nights by myself to suppress the desire and feeling towards her.

Long story to short, I chose my career instead being a boyfriend with her in indefinite time. I would probably live with her and have a child. When a guy and a girl love each other, they wanna have a baby unless both of them are crazy and eccentric.

Sexual love and pleasure are tricky to understand.  Anytime the pleasure takes over, it could change the human being in undesirable way.  Human being is such a crazy animal that would put one’s dear life for the instant pleasure. I’ve been there many times.  Somehow I’ve managed not to have a single broken bone over the past twenty wild years. I still enjoy riding a sportbike that moves three digit over the speed limit on public road periodically. While I’m riding a sportbike in high speed, I can forget the complicated, fucked up reality around me. The existence itself simply becomes so clear “One tiny mistake or unfortunate event would trigger a big disaster either being road kill by traffic accident, a patient who need life-time medical care for the life time.”

Few years ago I decided to use my crazy personality, die-trying spirit for the good purpose.

Wish you best, sweetie. And Good night, sweet dream!

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How to do valve clearance check

2004 – 2006 Yamaha R1

I gotta do the valve clearance check before 42,000 km by myself.

I was going to get it done at a motorcycle repair shop but the mechanic’s arrogant attitude and lack of experience forced me to do it sooner or later.



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