Noise regs

[Kiwi91Fat]

Just went to ONROAD, with the Harley, its had a Vance and Hinds 2 into 1 since it was Vined in the early 90's. They passed everything else but failed the WOF on exhaust over 97db. Now the exhaust isn't modified its muffler is repacked and I have a sound meter with A and C weighting.
According to these INSPECTORS they can stand directly behind the muffler, not 45> off center as I understood the specs were for ISO 5130:2002. They tested it in what I would call a sound shell with over a dozen resonating surfaces present.
Has anyone else had any of these experiences

[JimO]

a guy 10 houses down the road has a heavily modded fatboy when he starts it up my windows rattle, chances are high he hasnt even got a wof

[avgas]

yep - sadly we all saw it comming.
I'm quite lucky as my yammy pipe still has all the standard markings on it and doesnt sound loud until you give it a lot of juice.
Shove some wire mesh, some goldilocks, and some more wiremesh down the pipe. You can pull this all out again latter if need be and it cuts half the noise.
Worked the trick on my gb

[Mom]

Even the quietest "noisy" cans are at risk of this new age of noise metering.

Good luck to you getting your NOISY exhaust approved.

[Gremlin]

Kiwi91: You certainly sound like you have done your homework, and know the regs.o I haven't had it happen, but I wonder who you complain to, when the bike has failed, its been noted (most likely) and the inspectors evidently have no idea how to test it. The manager? How do you politely tell him/her his/her staff know fuck all, and could you have your wof please

Equally, 97db is not a fail. The limit is 100db.

fwiw, there must be a clear radius of 3m from the bike, with no reflecting surfaces in the zone and the surface must be firm, level as practiable etc.

[wofman]

for a wof the Dbs must be 97 or under .away from any thing that may cause
an eco. the meter needs to be the same hight as the exhaust and at 45degres to the exhaust.trafic regs allow 100 Dbs but you must have certified
and the paper work for the cert:

[Ixion]

Vance and Hines is, by definition, a modified exhaust.

The 97 is just a "rule of thmub" figure to give the AVI an indication of whether he should refuse a WoF and refer for a "full" test. They don't have to use a meter at all, they can just say "Oh, that's not a standard exhaust. And it sounds loud to me. Cert required".

[rudolph]

I am worried about my 1973 HD Sportster , it has Chinese mufflers witch look like the HD ones but it is still very noisy

[MSTRS:Me]

To anyone with concerns about the noise level of their bike...a simple solution seems to be take it to a LVV Certifier, pay your $200ish and remove all doubt. Either it will pass and you get a plate affixed saying so, or you fail.
Easy.

[Headbanger]

My bike can be heard for at least 3 blocks.

I take it out for a fang just to make sure shes all shipshape and the wife tells me I never went out of earshot....Something tells me i won't be bother to get warrants from here on in.

[MSTRS:Me]

....Something tells me i won't be bother to get warrants from here on in.

Or regos? Can't get one without a current WOF

[Headbanger]

Mere paperwork, Its all over rated.

[Okey Dokey]

To anyone with concerns about the noise level of their bike...a simple solution seems to be take it to a LVV Certifier, pay your $200ish and remove all doubt. Either it will pass and you get a plate affixed saying so, or you fail.
Easy.

Sigh. Yet another expense handed down to the populace from our bureaucrats. Was this the law that was aimed at "boy racers" and their vehicles?

[MSTRS:Me]

Sigh. Yet another expense handed down to the populace from our bureaucrats. Was this the law that was aimed at "boy racers" and their vehicles?

It started out that way, until some-one realised that it could apply across the board to all vehicles and then set what they thought were appropriate upper levels for noise. We can thank the boi-racers for getting the ball rolling, but you can be sure that it would have happened eventually anyway.

[Ixion]

Well, there might be several objections to this.

Firstly, it is $200. I am a poor impoverished old man eking out a frugal and penurious
existence on the smell of an oily rag (and oily rags aren't so common since they stopped making Triumphs at Meridan). $200 is a lot of money

Secondly , it is time. There are not many of these certifiers. There are bound to be delays

Thirdly, if I have a nice chrome zorst I don't want someone bashing holes in it for affixing plates. Bound to rust.

Fourthly, the existence of a plate is prima facie indication of a modified exhaust. That might be a bad thing on a classic bike. Devalues it.