Bringing down the sound!

Aussie1199 · Jun 25, 2013

Firstly, I apologise for yet another thread on sound and trust me usually I am all about making my bike as loud as possible.

Anyhow I have recently imported an 1199 into AUS from the USA and the bike needs to pass a sound test to enable registration. To date I have had very little luck, working with an engineer to bring the sound down through modifying the stock exhaust. The bike is still 10db higher than it needs to be.

Has anyone been successful in bringing the noise down significantly on a stock exhaust? Can you let me know how you did this?

I have read numerous threads on db killers, air filters etc.

Any information would be greatly appreciated!

Trauma · Jun 25, 2013

Look here for starters:

http://ducati1199.com/ducati-1199/1199-lowering-db.html

Frosty · Jun 25, 2013

You sheep fuckers should know how to plug things

.

hawaiiduc · Jun 25, 2013

Stuff the exhaust with steel wool with a small cable through it and after the test, pull it out. .... the government .... bags.

XIXCIX · Jun 25, 2013

FrostyFire said:
You sheep fuckers should know how to plug things .

That would be NZ, not Aus. Allegedly.

Trauma · Jun 25, 2013

XIXCIX said:
That would be NZ, not Aus. Allegedly.

Hey, I saw Thornbirds, lotta sheep herders in Oz :ED

XIXCIX · Jun 25, 2013

Trauma said:
Hey, I saw Thornbirds, lotta sheep herders in Oz :ED

What blue heelers ?

XIXCIX · Jun 25, 2013

Aussie1199 said:
Firstly, I apologise for yet another thread on sound and trust me usually I am all about making my bike as loud as possible.

Anyhow I have recently imported an 1199 into AUS from the USA and the bike needs to pass a sound test to enable registration. To date I have had very little luck, working with an engineer to bring the sound down through modifying the stock exhaust. The bike is still 10db higher than it needs to be.

Has anyone been successful in bringing the noise down significantly on a stock exhaust? Can you let me know how you did this?

I have read numerous threads on db killers, air filters etc.

Any information would be greatly appreciated!

How loud did it test?

Aussie1199 · Jun 25, 2013

'Sheep feckers' that NZ mate!

It tested at 105DB and thats after work done to modify. need to bring it down to 95db.

XIXCIX · Jun 25, 2013

Aussie1199 said:
'Sheep feckers' that NZ mate!

It tested at 105DB and thats after work done to modify. need to bring it down to 95db.

At X RPM?

Do your stock cans not have the baffles/Killers?

I wonder if i've got my stock cans. I'll look at lunch.

Frosty · Jun 25, 2013

Aussie1199 said:
'Sheep feckers' that NZ mate!

It tested at 105DB and thats after work done to modify. need to bring it down to 95db.

Well the stock exhaust says 105db right on it, I'm terribly surprised.

AntiHero · Jun 25, 2013

Safety wire a bunch of steel wool and stuff it in each side. There's a significant amount of sound coming from the headers, too, so wrapping them would help. Then again, 10db is quite a bit. You might want to have a local shop weld on a Japanese-style Panigale exhaust and then remove it once you pass sound.

Phl · Jun 25, 2013

Get the exhaust flapper valve to get stuck in a semi open position. Close it so far until your sound limit is achieved.

Cheers.

littlejohn · Jun 25, 2013

Phil said:
Get the exhaust flapper valve to get stuck in a semi open position. Close it so far until your sound limit is achieved.

Cheers.

+1.
Just jam the flapper closed.

Aussie1199 · Jun 25, 2013

My bike is actually in Melb getting the testing done.... Would be interested to know if the stock cans are different AUS vs USA?

XIXCIX - if the part is different would you be interested to sell ur stocks cans or lend them to me for a cost? I am assuming u bought your pani in AUS?

tholstro · Jun 25, 2013

FrostyFire said:
You sheep fuckers should know how to plug things .

Frosty you're a .... most of the time but entertaining for sure. That was funny as heck!

fireman1251 · Jun 25, 2013

Trauma said:
Hey, I saw Thornbirds, lotta sheep herders in Oz :ED

If you saw Thornbirds you must have snuck out of bed at night to glance over your mom's shoulder or you're clinically dead of old age

fireman1251 · Jun 25, 2013

FrostyFire said:
You sheep fuckers should know how to plug things .

Our resident bunny doesn't miss an occasion to crack me up

.

Anecdote: Calabogie, Ont., little bro has a Gixxer 1k with a Tailor made, flunks at sound, finds an empty beer can in the back of the truck, twists it in a wad, stuffs it in the exhaust and passes sound flying colours.

Go to my page and see what we do for a living, it will get clearer

XIXCIX · Jun 25, 2013

Aussie1199 said:
My bike is actually in Melb getting the testing done.... Would be interested to know if the stock cans are different AUS vs USA?

XIXCIX - if the part is different would you be interested to sell ur stocks cans or lend them to me for a cost? I am assuming u bought your pani in AUS?

I doubt if they are different.
If I have mine you can have them. I assume, perhaps yours might have had the dbkillers removed.

Aussie1199 · Jun 25, 2013

awesome XIXCIX, if you can have a look i would really appreciate it. Happy to give you some coin or send you a bottle of something. PM if you can

Bringing down the sound!

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