Straight pipes for a chopper?

[Motu]

Only if the idiot knows how to do a decibal test,like at the local vtnz they do it in a big tin shed with a meter shoved up the pipe "OH MY GOD THATS TO LOUD" explained to him that it is 1mtr back from muffler,1 mtr to the side and 500mm of the ground is where the meter sits and outside in an open space and spyda we have had a few bikes vinned and never have they wrote the brand of pipes down.

While we are on the subject of idiots, if you are going to call someone an idiot, and then set the facts right, make sure you get the facts right, otherwise you are an even bigger idiot.

The correct procedure is 500mm at a 45 degree angle from the outlet, and a minimum of 200mm from the ground. Different engines are tested at different rpm's....

Type of engine


Required test speed

2-stroke single cylinder


6000 rpm

2-stroke multi-cylinder


5000 rpm

4-stroke single cylinder


3000 rpm

4-stroke twin-cylinder with 2 valves per cylinder


2500 rpm

4-stroke twin-cylinder with 3 or more valves per cylinder


4000 rpm

4-stroke with 3 or more cylinders


4500 rpm
Engines other than motorcycle engines

Type of engine


Required test speed

Rotary engine


4500 rpm

Up to 5 cylinders


4000 rpm

Up to 5 cylinders with DOHC and variable valve timing


4800 rpm

6 cylinders


3200 rpm

8 cylinders


3000 rpm

More than 8 cylinders


4000 rpm

Diesel (any type)


2500 rpm

[jellywrestler]

Only if the idiot knows how to do a decibal test,like at the local vtnz they do it in a big tin shed with a meter shoved up the pipe "OH MY GOD THATS TO LOUD" explained to him that it is 1mtr back from muffler,1 mtr to the side and 500mm of the ground is where the meter sits and outside in an open space and spyda we have had a few bikes vinned and never have they wrote the brand of pipes down.

certified low volume is what i was talking about, he says he has a chop which most likely will need that process, you're more in that world then I am Dougal though.

[BIG DOUG]

Now now spyda I know you own a chopper so you are now in my world.

[BIG DOUG]

motu fuck off,I was generalizing they don't know what to do themselves so how are the rest off us meant to know,but we now do as you have laid it all out for us.

[Motu]

I was generalizing

Generalising was it? You haven't got a clue, and people have just thanked you for the misinformation. I wonder what the VTNZ inspector thought when you told him he was doing it wrong....and then told him how to do it wrong?

[BIG DOUG]

Do you work for vtnz or something,been crook for a few days so when I get to work tomorrow I'll check the regs myself,as for the original question just put stk pipes on it and remove when you have been through the process easy as.

[Motu]

Why do you need to go to work to check? The VIRM is online and you obviously have a computer - you could've checked your facts before writing that bullshit.

[Kickaha]

as for the original question just put stk pipes on it and remove when you have been through the process easy as.

That wont stop you getting ticketed if you get pulled over though

[barty5]

Do you work for vtnz or something,been crook for a few days so when I get to work tomorrow I'll check the regs myself,as for the original question just put stk pipes on it and remove when you have been through the process easy as.

All good where would you suggest stk pipe would go given they are built this way.

[pete-blen]

Wanting to know what is the deal with straight pipes back in NZ been living in US for a while and due to move back to NZ this time next year so with chopper with straight pipes be able to be registered as thats what it came with when built ???

I bloody hope not...

[BIG DOUG]

I have a right side drive 2-1 of a an american ironhorse here which would be way quieter than those vance + hines ,and also some stock pipes but I'd say a bracket or two would be needed to make those fit, where in new zealand are you going to be living and for the record there are plenty of bikes running around nz with those pipes on.Not a bad looking bike you have there.