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admin
2011-10-06, 16:52
Bill Banning Loud Pipes May Be Coming Down the Pipe

http://www.hdforums.com/Sound_Test.jpg

Loud Pipes May Soon Cost Large Fines
by Jason Giacchino

When it comes to motorcycle modifications, we are often as guilty as the next of recommending the exhaust system as a good starting point. After all, because of the simple fact that aftermarket units are immune to the rigorous federal noise standard approval, they often flow exhaust more efficiently (hence increasing engine performance), and save weight. However, they can be much louder than stock, which is a noise some legislators have apparently heard enough of.

As anyone who has ever been to a racetrack or air-show can attest, loud exhaust notes can be downright thrilling, with their suggestion of performance within. However, it's looking like those riders who opt to run straight pipes or racing exhausts on the street are going to make it so the rest of us will no longer have the option to purchase such systems period.

At present, the decision on proper muffling is left on a state-by-state basis, but if word coming out of states like New Hampshire is an indication of things to come, it is very likely authorities will be coming down hard on motorcycle sound output nation-wide in the near future.

Republican Rep. Michele Peckham of Hampton (http://www.congress.org/congressorg/webreturn/?url=http://www.gencourt.state.nh.us%2Fhouse%2Fmembers%2Fmembe rlookup.aspx) plans to introduce a bill to reduce the permissible level of noise that motorcycles can produce - a bill that has a very strong chance of being passed into law.

http://www.hdforums.com/Straight_Pipes.jpg

The state of New Hampshire's current law permits bike exhausts to emit 106 decibels. Peckham's bill would reduce that to the EPA-approved standard (http://www.epa.gov/otaq/roadbike.htm) of 84 decibels, roughly one-third as loud as the current standard.

So just what is 106 decibels you wonder? The answer may surprise you. 106 decibels is equal to the sound emitted by a Boeing 707 or DC-8 aircraft at one nautical mile (6,080 feet) before landing. It is also louder than a jet fly-over at 1,000 feet above ground (103 decibels); a jet take-off (at a distance of 305 meters); and even a Bell J-2A helicopter hovering at 100 feet (100 decibels).

In comparison, the average OEM system typically comes in around 75 to 80 decibels, or about as loud as a dishwasher.

This is nothing we haven't witnessed before, as lawmakers attempt to cut down on the few individuals who feel rattling pictures off the walls of homes is their birthright. The big difference here is that the new legislation wouldn't depend only upon random police stops to be enforced, but would now work similar to an automotive inspection, whereby the bike will not be issued a sticker if the exhaust does not comply.

http://www.hdforums.com/Pipes.jpg

Of course police with portable decibel-detecting equipment could still issue some heavy fines so as to crack down on those individuals who run the stock exhaust to the inspection station then decide to swap back to their louder equipment once the sticker has been issued. In fact this particular bill is looking for $350 fines for such an offense.

Those taking comfort in the fact that they live or ride outside of the state of New Hampshire have little to celebrate as momentum for these bills is spreading. Already Boston and Denver have ordinances requiring all motorcycles made after 1982 to have emissions systems labels, or the operator gets slapped with a $500 fine on the spot. Maine has already passed a bill remarkably similar to what is happening in New Hampshire whereby all motorcycles must pass a legal decibel level of 95 to pass inspection.

The American Motorcyclists Association (http://www.americanmotorcyclist.com/) opposes laws regulating exhaust systems, which it views as difficult to enforce and results in the singling out of motorcycles. It does however support legislation like the above law that recently passed in Maine that allows police officers to cite bikers for excessive noise, but lets motorcyclists evade the ticket by going to a certified testing facility and proving that their bike falls under the noise limit.

What do you think? Are lawmakers saving our ears or messing with our freedom? Voice your opinion here! (http://www.hdforums.com/forum/general-harley-davidson-chat/677373-banning-loud-pipes.html)

jale
2011-10-06, 16:57
Fast en del av USA polisen har insett att man faktiskt uppmärksammas mer i trafiken om man låter lite. Enligt den amerikanska bikern och fotografen Rogue utrustade polisen i Oakland i Kalifornien sina H-D med nya glittrande ljuddämpare, till en kostnad av cirka 3 000 kronor per hoj, för att polismännen inte kände sig trygga på sina allt för tysta hojar med originalpipor.
Det finns ett gammalt motorcykeluttryck som säger att du hörs innan du syns, förklarar vice polischef Dave Kozicki bytet till de bullrigare piporna. Enligt honom är en av de bakomliggande orsakerna till bytet en olycka som inträffade för tre månader sedan, då en polisman blev påkörd av en bilist som uppgav att han inte hade hört motorcykeln närma sig.
Detta utspelades 2008 på hösten ....

Lappen
2011-10-06, 21:02
Mr Kozicki tycks vara en sympatisk länsman....

Lappen
2011-10-06, 21:11
Läste för något år sedan att Harley höll på att utveckla ett avgassystem där det skulle finnas ett "Highway" läge och ett "City" läge... På något sätt skulle man med enkla medel under färd kunna växla mellan olika pipor... Vet ej hur, eller om det var en skrivbordsprodukt som inte fungerade i verkligheten, men visst finns det vissa nätter man skulle vilja smyga in i villaområdet....

oggy69
2011-10-07, 12:58
Finns redan en version som har ett spjäll i avgassystemet som man styr med en liten vajer ......
Kan leta lite efter det om någon är intreserad?

Lars Nilsson
2011-10-07, 13:56
Patriot Defender
http://www.patriotpipes.com/pipes.html

Lappen
2011-10-07, 19:39
Thanx guys!
Vad säger länsman och bilprovningen om detta?!?

Hagis
2011-10-07, 23:14
finns inga snälla länsmän! Punkt....
Men jag lånar tråden i en fråga om pipor! Kan man fixa egna pipor, dvs helt raka rör och behöver man tänka på längden osv?
Varför jag undrar är för att på andra hojar, sport, motard osv så blir det lite fel om man tex kortar av dämpen eller byter rör och inte mappar och fixar...

golden
2011-10-08, 15:11
Kör med patriot defender själv fungerar kanon !