Why are Harley Davidson Motorcycles So Loud?
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In this video:
Straight off the line today, Harley exhaust systems can emit noise as high as 80 decibels (dBs), give or take depending on the model. For reference, a typical car when idling emits noise at about 35-45 dB and in the high 50s to low 60s decibel levels at freeway speeds. Even something like a 2008 Ford F-450 truck only gets as loud as 51 dB when idling and 68 dB when traveling at 65 mph.
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Sources:
http://www.epa.nsw.gov.au/noise/vehic...
http://www.auto-decibel-db.com/
http://urbanmilwaukee.com/2014/09/02/...
http://www-nrd.nhtsa.dot.gov/Pubs/810...
http://www.motorcyclecruiser.com/loud...
http://www.noiseoff.org/motorcycles.php
https://en.wikipedia.org/wiki/Noise_r...
http://windenergydevelopmentllc.com/N...
http://www.kxly.com/news/spokane-news...
https://www.bikesbluesandbbq.org/pdf/...
http://urbanmilwaukee.com/2014/09/02/...
http://urbanmilwaukee.com/2014/09/02/...
http://www.redding.com/news/harleys-r...