Did you keep your original pipes?

**MSTRS:Me** · 13th December 2007, 10:26

Originally Posted by vifferman

.... it looks like being yet another piece of crap SafetyNazism.

I thought that was the point. I mean, if logic crept in, we might have to think for ourselves. Couldn't have that, could we?

**Qkchk:Me** · 13th December 2007, 10:28

Originally Posted by Ixion

The dB level for bikes remains at 100dB by the way, we get more than cages.

God bless Two-Strokers!

**robertydog** · 13th December 2007, 10:28

Nice little article this. Explains it all.

http://www.beehive.govt.nz/ViewDocum...cumentID=31615

**robertydog** · 13th December 2007, 10:34

Do you think my bike would pass the test? Put the volume up.
[YOUTUBE]http://www.youtube.com/watch?v=unbMck2TWLA [/YOUTUBE]

**James Deuce** · 13th December 2007, 10:37

Originally Posted by robertydog

Do you think my bike would pass the test? Put the volume up.

Yes. Yours has a pleasant tone rather than ear-bleeding agony when travelling at 236 km/hr a mere 5 metres away.

**MSTRS:Me** · 13th December 2007, 10:43

Originally Posted by Jim2

Yes. Yours has a pleasant tone rather than ear-bleeding agony when travelling at 236 km/hr a mere 5 metres away.

That didn't creep in until the 299 mark. Eh, Rob?

**vifferman** · 13th December 2007, 10:47

The worrisome part is this:

The amended Vehicle Equipment Rule revises the wording so that the exhaust noise output:

“must be less than, or similar to, the noise output from the vehicle’s original exhaust system at the time of the vehicle’s manufacture”. This still provides for inspector discretion but is a more defined description.

How the fook an inspector is supposed to determine this, I dunno.

'Inspector discretion' defined:
Motorcycle shop with WOF facilities:
"Choice pipes bro! Fuk'n loud though, eh? Better keep one eye open for cops when you're riding!"

VTNZ with failed/retired mechanic SafetyNazis:
"Errr... yeah, that's not the O-rig-i-nal zorst, izzit? Sounds pretty noisy to me, innit? That's a fail, that is!"

**robertydog** · 13th December 2007, 10:49

They wouldny get much noise out of an R1 going thru the gears to 50kmhr

**Angusdog** · 13th December 2007, 11:17

The objective test is to ISO 5130, which is a microphone placed 0.5m from the exhaust outlet...

...at 75% of peak power revs (so 7,500rpm if your bike develops max power at 10,000rpm).

I'm not sure how loud 100dB is, but I'll be changing my pipes twice a year, it would seem. Have to be gentle with the exhaust gaskets or it will be costly (Over $50 each WoF).

**vifferman** · 13th December 2007, 11:36

Originally Posted by Angusdog

The objective test is to ISO 5130, which is a microphone placed 0.5m from the exhaust outlet...

...at 75% of peak power revs (so 7,500rpm if your bike develops max power at 10,000rpm).

That's stupid.
Normally, these tests specify that the mic is at a 45-degree angle to the zorst outlet, otherwise the pressure of the zorst pulses themselves (which isn't necessarily audible to a human bean) affects the reading.
My worry is that on the VFR, the cam gears themselves contribute about 120 dB to the overall noise (the reason they dropped them on the VTec).
I guess dry-clutch Ducatis, and rattly HD-engined bikes will be in the same (noisy) boat...

**Swoop** · 13th December 2007, 11:46

Still have the standard pipes fitted. I'm a Caring Unshaven Nineties Type though... OK, it is going to be attended to over the break!
Bike is too quiet. more cagers need to be alerted.

Originally Posted by vifferman

...the 'Boy Racer' laws, the regulations are largely a kneejerk reaction to bleating by a vocal few, rather than a sensible, pragmatic and logical application of well-considered regulation.

In which way does this differ from any other bit of legislation that our un-intelligensia creates???

**vifferman** · 13th December 2007, 11:50

Originally Posted by Swoop

In which way does this differ from any other bit of legislation that our un-intelligensia creates???

One lives in hope, does one...

That one day there will be a revolution!

The SafetyNazis, petty bureaucrats and lawmongers will be near the front of the queue for the firing squad, just behind career politicians, bleeding-heart liberals, and various sorts of agents / commission salespeople.

**Pwalo** · 13th December 2007, 12:01

Originally Posted by vifferman

That's stupid.
Normally, these tests specify that the mic is at a 45-degree angle to the zorst outlet, otherwise the pressure of the zorst pulses themselves (which isn't necessarily audible to a human bean) affects the reading.
My worry is that on the VFR, the cam gears themselves contribute about 120 dB to the overall noise (the reason they dropped them on the VTec).
I guess dry-clutch Ducatis, and rattly HD-engined bikes will be in the same (noisy) boat...

I think any air cooled bike will be in the same boat. I'm sure that my old GS' engine was noisier than it's exhaust. The SV is pretty quiet stock. Probably noisiest when it goes through it's start up routine.

I guess that's why my bike's plastered with stickers, and stamp on the pipe stating it's DB rating. It'll save the inspector having to make a decision.

**vifferman** · 13th December 2007, 12:40

Originally Posted by Pwalo

I guess that's why my bike's plastered with stickers, and stamp on the pipe stating it's DB rating. It'll save the inspector having to make a decision.

That's why I'm thinking of getting one of the badges Staintune make for their Aussie (NSW? Vic?) customers' zorsts.

After I got the VFR, I removed all the silly stickers it was festooned with. The first to go was the one on the frame that said the zorst complied with blah blah blah, and named the serial number it should've been stamped with.

The VTR1000 was just as bad - the mufflers were stamped with the compliance info and dB ratings it complied with, which made the obvious bastardisation of the endcaps all the more glaring. (Not that you could fail to notice how loud they were - they set off EVERY car alarm in the immediate vicinity).