View Full Version : WOF noise test
red675
14th April 2009, 07:41
Has anyone had their bike tested for a loud exhaust when getting a warrant ?
Story I've heard is they have been doing it since April 1st, so I guess the second question is : has anyone come unstuck yet ?
timetoride
14th April 2009, 07:51
My father in law had dis bike tested and they did three tests to gain an average. legal limit is 98 db his average was 97.5 :sweatdrop he was very lucky and happy! I know of some people with cars that have come unstuck and I'm not talkin boy racers, mate had his series 5 msport beemer failed :gob: it had wolf muffler on it and was told it was too loud.
munterk6
14th April 2009, 07:56
its not hard to put your standard muffler back on for the WoF test is it?
There is a way around everything lol! :yes:
vgcspares
14th April 2009, 13:47
if you don't have the original muffler then a restrictor on the junction between muffler and collector box works quite well ...
Dargor
14th April 2009, 13:51
I've had mine done. all standard, told it was close.
scumdog
14th April 2009, 13:51
Just got a WOF on the T-Sport, no test, no worries.
(And EVERYBODY knows Harleys are really loud eh!)
peasea
14th April 2009, 14:00
Has anyone had their bike tested for a loud exhaust when getting a warrant ?
Story I've heard is they have been doing it since April 1st, so I guess the second question is : has anyone come unstuck yet ?
Yup, got a fail, went home, put standard mufflers on, got WOF, went home and reversed the procedure. Fuckers.
vgcspares
14th April 2009, 14:02
at this point it seems to depend where you go for the WOF then - testers shit list anybody ?
zzzbang
14th April 2009, 14:27
pretty funny how my stock bike comes with a sticker that says over 100 db (102 i think?) at 6.6k revs?
vifferman
14th April 2009, 14:55
at this point it seems to depend where you go for the WOF then - testers shit list anybody ?
Whelp, a few years ago, I went to the vinz/vtnz place next door to the scooter place, across the road from Red Baron. My VTR had modified zorsts, and I wanted to see (beforehand) if it would pass. The tester looked at it, revved it a bit, looked at it, said, "These zorsts have been modified. You're not allowed to modifiy mufflers!"
"So... that would be a fail, then?"
"Yup."
Last time I went for a warrant, I took the VFR to Action Bike Wreckers. The guy there said he won't even bother testing a bike if it's obviously loud. He has a sound meter, but because there are so many variables with ambient noise, engine noise, etc. affecting the reading, it's easier for him to just refuse to do a WOF, than get embroiled in an argument.
He passed mine, but reckoned it wouldn't pass if tested with a meter. I disagreed, as it had the 'stealth' restrictor in, which according to Staintune complies with NSW (and therefore NZ) noise regs. However, like him, I was well aware that the VFR's engine itself produces so much mechanical noise that you're not testing the muffler noise emissions so much as muffler + ambient + engine. Even a VFR with a standard muffler would struggle in those circumstances.
twotyred
14th April 2009, 15:49
got a wof on the DR today,tester didn't look at or listen to exhaust...
rosie631
14th April 2009, 16:46
Yep been tested and scraped in by 1dB. That was with the stock pipes. Have some others I want to put on but if I do will definitely be having to swap them back each time i want a warrant.
mashman
14th April 2009, 20:03
The Prila don't need a new WOF for a while (but she is a little noisy beat). One thing I'm curious about though, of those who had it tested what did they rev it to? or was it measured at idle? What what what???
scumdog
14th April 2009, 21:36
The Prila don't need a new WOF for a while (but she is a little noisy beat). One thing I'm curious about though, of those who had it tested what did they rev it to? or was it measured at idle? What what what???
Rev it?
Red lined it
To 4,800rpm.
That's it in a H-D
rosie631
14th April 2009, 22:29
The Prila don't need a new WOF for a while (but she is a little noisy beat). One thing I'm curious about though, of those who had it tested what did they rev it to? or was it measured at idle? What what what???
I think it's supposed to be 2000rpm but since i don't have a rev counter he guessed that anyway.
the mouse
14th April 2009, 22:49
I questioned my muffler noise with the tester at the last wof as they are getting a bit rowdy, his reply " Nope, not bad compared to some of the Hurleys we get in here."
Loud bikes let the tin tops know you are there.
howdamnhard
14th April 2009, 23:03
Just had a WOF done on my bike, don't recall them doing a noise level test , but then I only have standard pipes.
chap
15th April 2009, 10:02
firstly yes ive been tested. and fined for excessive noise. you can incurr points on ya license too. bit of a hassle changing my pipes but that only comes round once a year. running bassani 2-1 pipes on the hog so at least im audibly visible to cagers. loud pipes save lives.
vifferman
15th April 2009, 10:28
Loud pipes save lives?
<img src="http://homepages.ihug.co.nz/~cam4/loudpipes.gif"></img>
vgcspares
15th April 2009, 10:45
this doc:
http://www.lvvta.org.nz/stdExhaustNoiseEmissions.pdf
indicates Motorcycle engines need to be tested at the following RPM:
2.6(2)
The engine speed for the exhaust noise emission test of a motorcycle engine, must, for the duration of each test, be within a tolerance of +/- 5% of either:
(a) in the case of an engine that has a manufacturer’s engine speed maximum power (ESMP) that is known to the LVV certifier, 50% of that figure; or
(b) in the case of an engine that does not have a manufacturer’s ESMP that is known to the LVV certifier, or the manufacturer’s ESMP has become irrelevant because the engine is now outside of its original specification:
(i) 6000 RPM if the engine is a 2-stroke single-cylinder engine; or
(ii) 5000 RPM if the engine is a 2-stroke multi-cylinder engine; or
(iii) 3000 RPM if the engine is a 4-stroke single-cylinder engine; or
(iv) 2500 RPM if the engine is a 4-stroke twin-cylinder engine with 2 valves per cylinder; or
(v) 4000 RPM if the engine is a 4-stroke twin-cylinder engine with 3 or more valves per cylinder; or
(vi) 4500 RPM if the engine is a 4-stroke engine that has three or more cylinders;
or
(c) in the case where a low volume vehicle certifier believes the engine speeds specified in 2.6(2)(b) are unreasonably high, taking into account the type and age of the engine, he may apply an engine speed for the purpose of the sound level test at which he believes is appropriate for the engine, and at which the engine may be safely operated
I bet all the testers don't know this but it may pay you to
Motu
15th April 2009, 18:16
Gee,thanks for that,I didn't know there were any rules - I've just been revving them to the red line.
crazyhorse
17th April 2009, 07:08
I have a yoshi pipe on my SV650 (older model) and its really loud. Been to the testing station last week, and they just commented on how nice it sounds etc.... yet I expected there to be a problem - esp since there would only be about 8 mm between the pipe and swing arm - yet, I have never had a problem with it - might depend on where you go for your warrant?
Dodgyiti
17th April 2009, 07:33
Does this rule apply to bikes pre Euro 1/2/3 ?
There were no regs when my bikes came out that I know of (pre 1980's) and they are loud with factory pipes, and you can't get factory pipes any more for them and being Italian, the original mufflers rust out in a year or so anyway.
I have not been noise tested on them yet, but expect to sometime down the track. I used to stuff a wadd of stainless kitchen pot scourer down the open pipes I used to run before I pulled in to the WOF place... this sucks :oi-grr:
nallac
17th April 2009, 07:56
Yup, got a fail, went home, put standard mufflers on, got WOF, went home and reversed the procedure. Fuckers.
It helps when you know a WOF inspecter, who knows thats going to happen and lets it slide......
peasea
17th April 2009, 08:07
It helps when you know a WOF inspecter, who knows thats going to happen and lets it slide......
Yeah, some are sensible and know that it's not worth the hassle, but they're few and far between. Personally I don't like bikes that are too noisy.
rosie631
17th April 2009, 08:35
Does this rule apply to bikes pre Euro 1/2/3 ?
There were no regs when my bikes came out that I know of (pre 1980's) and they are loud with factory pipes, and you can't get factory pipes any more for them and being Italian, the original mufflers rust out in a year or so anyway.
I have not been noise tested on them yet, but expect to sometime down the track. I used to stuff a wadd of stainless kitchen pot scourer down the open pipes I used to run before I pulled in to the WOF place... this sucks :oi-grr:
Yep, it does apply. My bike is a 95, so before regulations and was told it don't matter, still have to comply.
vgcspares
17th April 2009, 09:51
if anyone does hit a snag I can probably work something up in the way of a removable restrictor that would get the exhaust through a test ....
rosie631
17th April 2009, 10:24
if anyone does hit a snag I can probably work something up in the way of a removable restrictor that would get the exhaust through a test ....
I might be interested in that. Thinking about putting drag pipes on my bike and there's no way I will get a WOF with them. Don't really want to go thru the hassle of swapping pipes everytime I need a WOF.
vifferman
17th April 2009, 10:43
IThinking about putting drag pipes on my bike
Great. <_<
Yet another obnoxiously noisy Harley on the road. :pinch:
rosie631
17th April 2009, 10:44
Great. <_<
Yet another obnoxiously noisy Harley on the road. :pinch:
Yep. :hug:
CookMySock
17th April 2009, 11:10
Gee,thanks for that,I didn't know there were any rules - I've just been revving them to the red line.The last WOF tester I saw redline an expensive (cold) engine ended up on the concrete floor with a blood nose. He can do the math on that.
Steve
Tank
17th April 2009, 12:51
The last WOF tester I saw redline an expensive (cold) engine ended up on the concrete floor with a blood nose. He can do the math on that.
Steve
So was this you being a dangerous bastard ? Or was it someone else doing the bash??
Motu
17th April 2009, 17:30
The last WOF tester I saw redline an expensive (cold) engine ended up on the concrete floor with a blood nose. He can do the math on that.
Steve
Oh golly gosh,that's really scary! Sounds like you are one tough guy! I have reconsidered my approach to the noise test now,and have amended my ways.Yes sir reeeee.
Ixion
17th April 2009, 17:32
Let me guess. You now don't even start the engine, just automatically fail them , cos they *look* noisy ?
Motu
17th April 2009, 17:47
Correct - it's still the subjective test remember.Using the meter is just a way to document and show a customer the noise level is too high.Really,if there is any doubt,the AVI just needs to pass the buck - back to the customer....to change the system or get a cert.
dogsnbikes
17th April 2009, 17:55
My local testing station does'nt even start my bikes......so guess they aren't too concerned about noise etc:whistle:
Racer X
17th April 2009, 18:27
More importantly, where is a good place on the shore to <i>get</i> a WOF?
nallac
17th April 2009, 20:16
I might be interested in that. Thinking about putting drag pipes on my bike and there's no way I will get a WOF with them. Don't really want to go thru the hassle of swapping pipes everytime I need a WOF.
ya lazy buggaress, its only a 10minute job..
scumdog
17th April 2009, 20:23
I might be interested in that. Thinking about putting drag pipes on my bike and there's no way I will get a WOF with them. Don't really want to go thru the hassle of swapping pipes everytime I need a WOF.
Probably lose horsepower and not run as well if you fit the drag-pipes.
rosie631
17th April 2009, 20:31
Probably lose horsepower and not run as well if you fit the drag-pipes.
Yeah, have hear performance could be affected. Have been holding off on putting them on for that reason cos the bike runs real sweet at the moment. Harley shop said they would tune it to the pipes.
AllanB
17th April 2009, 20:50
Harley shop said they would tune it to the pipes.
Weird comment from them. Is that Rolling Thunder? as there are plenty of HD's with open drag pipes outside there on a Saturday morning.
I bet they take your money to tune a set of Screaming Eagles.
IMO Harleys and drag pipes sound naff. Screaming Eagles or similar pipes with baffles and a reasonable noise level (read legal, as in under 100db) sound sweet.
rosie631
17th April 2009, 20:52
Weird comment from them. Is that Rolling Thunder? as there are plenty of HD's with open drag pipes outside there on a Saturday morning.
I bet they take your money to tune a set of Screaming Eagles.
IMO Harleys and drag pipes sound naff. Screaming Eagles or similar pipes with baffles and a reasonable noise level (read legal, as in under 100db) sound sweet.
Yeah, it was rolling thunder.
Dodgyiti
17th April 2009, 22:00
Nice to hear open pipes if your a bike mechanic, knowing they will be back in 2000kms for a new set of exhaust valves when the lack of back pressure burns them out
:laugh:
No wonder the dealers are keen to sort that out for you
scumdog
22nd April 2009, 17:55
Weird comment from them. Is that Rolling Thunder? as there are plenty of HD's with open drag pipes outside there on a Saturday morning.
I bet they take your money to tune a set of Screaming Eagles.
IMO Harleys and drag pipes sound naff. Screaming Eagles or similar pipes with baffles and a reasonable noise level (read legal, as in under 100db) sound sweet.
I'm with you on this.
Straight pipes = naff.
ICE180
23rd April 2009, 12:25
The WOF guys will have a probelm if you have a 2T Auto scooter and want to get it to 6000rpm as it will be half way down the road and too far for the noise meter to get a correct dB reading
Motu
23rd April 2009, 21:07
I just lay them on their side and hold the throttle open.....you need to plant your foot on them pretty hard as they want to buzz across the floor.
I don't think that dangerous guy will want to hurt me for that,because they are just scooters after all....
rocketman1
23rd April 2009, 21:30
Had the V twin in for WOF with baffles put back in the yoshis, they didnt even test for noise, how could such a beautiful low rumble be offensive to anyones ears.
Got home baffles out in 5 minutes. Back to how an SV should really sound...how all bikes should sound.
Now a 2 stroke, without baffles even that would offend me and I can put up with alot of noise.
peasea
23rd April 2009, 21:39
I thought this was a 'bit' funny. Guy on V-Rod with Vance and Hines pipes get stickered, right? So, where to put the green paperwork? On the plate. Brilliant. Now rider can go like fuck (all the way home) without fear of being plucked by cameras or whatever. I loved it.
Malcolm
23rd April 2009, 23:11
this doc:
http://www.lvvta.org.nz/stdExhaustNoiseEmissions.pdf
*snip*
I bet all the testers don't know this but it may pay you to
That's probably because those are LVVTA specs/guidelines (Low Volume Vehicle Technical Association) - ie for certifiers (for modified vehicles), not warrant of fitness inspectors.
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