jeff
Junior Member
Riding For the SON
Posts: 32
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Noise
Mar 15, 2009 13:20:55 GMT -6
Post by jeff on Mar 15, 2009 13:20:55 GMT -6
Does anyone know what the exact law on the noise is? I have read that the city is dropping all the straight pipe and baffle issues for just the 89 decibles...is this correct or does the city even know. The MBPD site still list a 99 decibel law. Just curious as to what is on the books today.
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Noise
Mar 15, 2009 14:43:05 GMT -6
Post by bigbuck on Mar 15, 2009 14:43:05 GMT -6
Does anyone know what the exact law on the noise is? I have read that the city is dropping all the straight pipe and baffle issues for just the 89 decibles...is this correct or does the city even know. The MBPD site still list a 99 decibel law. Just curious as to what is on the books today. Last I read they were discussing dropping the EPA label requirement, however, they were sticking to the 89 db at idle at 20 inches at 45 degree angle. Last I looked, they had not made any changes on their website acknowledging the EPA label drop.
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Noise
Mar 15, 2009 17:42:34 GMT -6
Post by freebird on Mar 15, 2009 17:42:34 GMT -6
Does anyone know what the exact law on the noise is? I have read that the city is dropping all the straight pipe and baffle issues for just the 89 decibles...is this correct or does the city even know. The MBPD site still list a 99 decibel law. Just curious as to what is on the books today. Jeff Welcome to ibiker. Things seem to change quickly down here but at present it is done according to SAE - J1287. The complete version is in the info pages of the site. Short version is 20 inches at a 45 degree angle and at 89 decibels. I have not seen where they have said this but the meter should be and is generally accepted at the A Weighting for the meter. That makes a big difference as the meters are weighted as to the sound they are measuring and the results. The State noise ordinance is 99 decibels measured the same way. Many of the surrounding towns have noise ordinances as well. Hope this helps
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Noise
Mar 16, 2009 7:30:44 GMT -6
Post by amsmith170 on Mar 16, 2009 7:30:44 GMT -6
I recently ran a test using a Radio Shack dB meter on my ride. Stock exhaust on my 1999 FXDWG put out 87.5dB at idle and 92 dB at 3500 RPM. following SAE J1287. With an S&S Quick Set Up Kit (slip-on mufflers, air cleaner and Jet kit), it came in at 89.5 dB at idle and 94 dB at 3500 RPM. Of course, I have no idea when the meter was calibrated last, as I borrowed it from work.
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Noise
Mar 16, 2009 10:26:44 GMT -6
Post by classic53 on Mar 16, 2009 10:26:44 GMT -6
All I know is if there is a ride thru the city, I will be watching. My bike won't pass the db levels. But I do love my Rinehart TDs.
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Noise
Mar 16, 2009 11:44:18 GMT -6
Post by bigbuck on Mar 16, 2009 11:44:18 GMT -6
Classic, I am with you on that. Dont think my screaming eagles will pass either. Am trying to find someone to check them for me though. I would love to ride up and down by the mayors house barely legal.
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jeff
Junior Member
Riding For the SON
Posts: 32
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Noise
Mar 16, 2009 11:56:12 GMT -6
Post by jeff on Mar 16, 2009 11:56:12 GMT -6
Well I checked my Jug Huggers at 10 ft..87 decibels. Need to check at 20 inches. The SAE standard that I have read says at 1/2 of engine speed, so makes me think they could reguire more than idle. I would love to ride by the mayors house.....but NOT A DIME to the city...and I hate it for the business sector, but I really haven't seen where they have stood up for the May business...soooooo I'll support the locals in Horry Co. and other towns.....sure will miss the Bowery.
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Noise
Mar 16, 2009 13:46:30 GMT -6
Post by adventure on Mar 16, 2009 13:46:30 GMT -6
My pipe's may be too loud also, However i am planning to ride down hwy 17, just for principle.
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Noise
Mar 16, 2009 16:16:29 GMT -6
Post by howardstern on Mar 16, 2009 16:16:29 GMT -6
"IF IT'S 89... IT AIN'T MINE!!!!!" ;D Great new slogan, huh?
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Noise
Mar 16, 2009 16:56:48 GMT -6
Post by DG1 Phillip on Mar 16, 2009 16:56:48 GMT -6
HHmmmm..... If we were to get everyone at bike week to back up to the city limits with their pipes and completely encircle the city of MB with that much HP, torque and decibles do you think we could blow MB into the ocean? ? ;D
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Noise
Mar 16, 2009 17:00:30 GMT -6
Post by bigbuck on Mar 16, 2009 17:00:30 GMT -6
;D HHmmmm..... If we were to get everyone at bike week to back up to the city limits with their pipes and completely encircle the city of MB with that much HP, torque and decibles do you think we could blow MB into the ocean? ? ;D maybe not the whole city, but at least those old fart s that are too old and whimpy too hold on and creating all this bull shikaka ;D
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Noise
Mar 17, 2009 5:21:02 GMT -6
Post by classic53 on Mar 17, 2009 5:21:02 GMT -6
;D HHmmmm..... If we were to get everyone at bike week to back up to the city limits with their pipes and completely encircle the city of MB with that much HP, torque and decibles do you think we could blow MB into the ocean? ? ;D maybe not the whole city, but at least those old fart s that are too old and whimpy too hold on and creating all this bull shikaka ;D Now this brought a big grin to my face at 7 in the morning!!!
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Noise
Mar 17, 2009 10:41:35 GMT -6
Post by classic53 on Mar 17, 2009 10:41:35 GMT -6
Here's an interesting article from Ca. Here's the link and then I pasted it below. Enjoy it www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2008/06/08/BAJB114OUT.DTLOver in Oakland they like it loud - so loud that all 45 of the Police Department's Harley-Davidson motorcycles have been equipped with shiny new tailpipes, at a cost of $500 apiece, to rev up their roar. It seems the cops just didn't feel safe on toned-down bikes. "There's an old motorcycle adage that you are heard before you are seen," said Deputy Chief Dave Kozicki, explaining the department's decision to toss the bikes' muted factory-issued mufflers in favor of the more high-volume pipes. Kozicki cited an accident three months ago in which an Oakland officer riding a toned-down cycle was struck by a motorist who said he hadn't heard the officer approaching. But some City Hall insiders, as well as motorcycle cops elsewhere, said the safety argument is a stretch. Even the folks at the national Motorcycle Industry Council, which represents all the big bike manufacturers, were unaware of any safety benefits from louder mufflers. "We encourage all motorcycle riders to keep the original low sound levels that meet the ... federal sound limit of 80 decibels," said industry spokesman Mike Mount. "It would seem counterintuitive that a law enforcement agency would go against federal standards." Ironically, it was just a short time back that Oakland police were called upon to crack down on noisy motorists who had modified their auto mufflers to make a whistling screech. The "whistle tip" pipes were eventually outlawed under state law. Oakland's cops had a long tradition of riding their Harley-Davidsons with the modified, louder tail pipes, earning them the nickname "Rolling Thunder." But after an officer complained about a loss of hearing and others around town questioned whether the police force was violating the very noise standards it was supposed to enforce, the department brass ordered a switch to the quieter stock mufflers. According to Kozicki, the decibel drop sparked a chorus of complaints from other officers, who said they felt less safe. So last year the department launched a $1,200 study in conjunction with the city's risk management division to determine whether A) the louder motorcycles contributed to officers' safety, B) were detrimental to their hearing, and C) complied with noise standards. Kozicki acknowledged that whatever safety-related findings the study produced were largely anecdotal. Still, after everything was taken into consideration, the department concluded "it was in the best interest of the officers to put more-audible pipes back on," Kozicki said. Hence, all 30 of the department's Harleys were sent down to the central maintenance yard for a muffler makeover, at a cost of about $15,000, according to City Hall insiders. Another 15 newly purchased motorcycles were ordered with the louder pipes, though at no extra charge. Oakland officials acknowledge that the noisy pipes, when tested, averaged 93 decibels - well above the federal legal noise limit, according to the Motorcycle Industry Council. But city Finance Director Bill Nolan, who oversees the risk management division, isn't alarmed. "If they were riding eight straight hours, it would be a problem," he said. "But they aren't
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Noise
Mar 27, 2009 11:42:57 GMT -6
Post by classic53 on Mar 27, 2009 11:42:57 GMT -6
Here's something interesting. I had asked beachbikers1 what model number that Radio Shack DB meter was. He sent me a link to their web site and I started reading the opinions by customers. Here are some interesting facts about this meter:
1. +/- 2db accuracy
2. not rated ANSI or IEC type I or type II
3. should not be used for document conformance to quality, mediacl, environmental, safety or other regulatory or LEGAL requirements.
Now this is REALLY interesting. If in fact the MBPD does use these meters, they have just lost all their cases!
Beachbikers1, are you sure they use these meters? Could you find out?
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Noise
Mar 27, 2009 13:25:41 GMT -6
Post by bigbuck on Mar 27, 2009 13:25:41 GMT -6
I checked out the shack meter also. Downloaded and read the owners manual. Didn't see any mention of the ability to recalibrate. Heck, if they are using the shack meter I will dish out $50 just to measure my pipes. If i am under 89 I will ride the city carrying my meter with me for comparison.
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