FIM noise level regulations for 2010

[Shorty_925]

Found this on the MNZ website:

DECEMBER 2, 2009: The International Motorcycling Federation has reduced maximum sound levels for off-road competitions.


The FIM has also lowered maximum noise level regulations for 2010.


For Motocross and Track racing, the maximum noise from 100 metres will be 81 dBA while Enduro noise levels will capped at 78 dBA from 100 metres. Overall, maximum noise levels will be reduced 3-6 dBA from 2009 regulations.


The FIM has also established a new standard sound test for competitions.


The “2 metre max” method will be used to measure sound levels at 2010 FIM Motocross, Enduro and Track World Championships. The test is carried out by positioning a sound meter at a 45 degree angle two meters from the exhaust. Sound levels are to be tested at the engines’ maximum rpm.


“A major step has been made with the implementation of this new method, thanks to an excellent cooperation between manufacturers and promoters, not to mention the strong impulse given by the Danish federation (DMU),” says Jean-Pierre Mougin, FIM deputy president and chairman of the steering committee on sound level reduction.


“This is important for the survival of all FIM off-road disciplines. The FIM had to react effectively. 2010 will constitute a first step in the fight against noise nuisances and the results will define the future actions.”


The new regulations were developed under an agreement the FIM signed with the United Nations Environment Programme in December 2006, and has the support of manufacturers and promoters.


“For the past 15 years, FIM has become a leading sporting federation, actively involved in the study and application of solutions to fight against environmental nuisance,” says Vito Ippolito, FIM president.


“The rules of the new sound test method for competition, represents a significant progress. I’m really pleased with the collaboration with our partners to achieve this agreement.”

[Katoomer]

Good news and better when its even lower . I hate wearing earmuffs at race meetings. As long as its enforced as it only takes 1 or 2 loud bikes to spoil places for the rest of us. The bike industry needs to be responsible and stop producing those pipes that are clearly over the Db limits.

[Shorty_925]

Agree that something had to be done. But even stock pipes arent that quiet..

[little.whittle]

Lucky thing those electric bikes are quiet huh

[NordieBoy]

So what is the max dB allowed at 2m?
At the limiter too!

The test is carried out by positioning a sound meter at a 45 degree angle two meters from the exhaust. Sound levels are to be tested at the engines’ maximum rpm.

[telliman]

Good news and better when its even lower . I hate wearing earmuffs at race meetings. As long as its enforced as it only takes 1 or 2 loud bikes to spoil places for the rest of us. The bike industry needs to be responsible and stop producing those pipes that are clearly over the Db limits.

have you tested your pipe latly, farrk 81 db is getting pretty low dude.

[little.whittle]

have you tested your pipe latly, farrk 81 db is getting pretty low dude.

Its from 100m so shouldnt be too bad

[telliman]

Its from 100m so shouldnt be too bad

woops

[camchain]

96db down to 81db is a pretty big reduction isn't it? I thought with Dbs it's like a geometric progression as you go up in noise levels.
I wonder if it may end up boosting sales of aftermarket mufflers though?

When i stop for a rest and a yarn out the Sandpit, you can tell the bikes that badly need a muffler re-pack when they roar by. Man, it's unpleasant being hammered by that racket. Leccy bikes will solve the prob once and for all, might even transform and grow the sport in a big way.

[scott411]

yes but the old noise gfigure was from a metre away, and at a certain rpm,

i think the new way of testing is much better, it works for speedway tracks in nz, and circuit racing of bikes and cars, you have a place where the noise meter sits, a certain measurement away form the track, and you have to make teh measurement,

the old stantionary test was very easy to beat with ignition settings, and was not done in full race trim,

[B0000M]

Good news and better when its even lower . I hate wearing earmuffs at race meetings. As long as its enforced as it only takes 1 or 2 loud bikes to spoil places for the rest of us. The bike industry needs to be responsible and stop producing those pipes that are clearly over the Db limits.

also the owners of venues / event organisers need to be telling the riders of these 1 or 2 loud bikes that their bikes are too loud, and if the rider has no idea, then offer them advise on how to rectify the issue.. theres a lot of riders out there that really have no idea that mufflers require re packing, and then theres another lot that think that their loud as 4 stroke sounds awesome, not realising the concequences outside their own little world.

a little education is all thats needed

[telliman]

dude, there was abt 4-5 brand new yz 125s straight out of the box that exceeded limits at ardmore this season, norm even advised them to go straight to the dealer to rectify the prob at there cost!
so its not just a four stoke thing!

[barty5]

dude, there was abt 4-5 brand new yz 125s straight out of the box that exceeded limits at ardmore this season, norm even advised them to go straight to the dealer to rectify the prob at there cost!
so its not just a four stoke thing!

of course it is havnt you heard 2t are the new thing they are the best and better than anything

[NordieBoy]

yes but the old noise gfigure was from a metre away, and at a certain rpm,

i think the new way of testing is much better, it works for speedway tracks in nz, and circuit racing of bikes and cars, you have a place where the noise meter sits, a certain measurement away form the track, and you have to make teh measurement,

the old stantionary test was very easy to beat with ignition settings, and was not done in full race trim,

They're still using the "2 metre max revs" test.