It seems to me one of the biggest issues we are facing is the sound levels of our bikes. Any 500cc bike is not going to make the puny 96db limit.
It almost seems that the limit should not be enforcible at the dunes since we are so far from ANYTHING.
Has anyone been checked? Did you pass? What do you ride.
Most 2 strokes are out if they start to enforce this with any kind of seriousness.
Thats the reality.
Full Version: Sound Levels Of Various Ohvs
Two strokes are not the bikes that have to worry. I've heard they are louder if measured at the pipe than a thumper but at any other distance, thumpers are much louder. Quieting a two-smoke is much easier also. The big bore thumpers don't like to be plugged.
Our decible limit will be 93. 96 is another states. The stock mx fourstrokes will not pass with the stock pipe.
Our decible limit will be 93. 96 is another states. The stock mx fourstrokes will not pass with the stock pipe.
The sound limit will not be 93. It is 96 and that wont change. where did you get your info?
A 86 through 89 Trx250 wont pass the limit (96) at stock.
Have you been tested at the dunes?
A 86 through 89 Trx250 wont pass the limit (96) at stock.
Have you been tested at the dunes?
I haven't been tested at the dunes. Sound testing has not made it this far down South to my knowledge. I believe this year will be the first time decible levels are checked at the dunes. I knew someone from thumpertalk.com that lived and rode in Hollister. He was tested voluntarily last year and failed with a quiet core exaust. He got inventive with his silencer tube and barely passed the next time but his bike didn't run well being that plugged up.
Last year when I first found out about decible levels, Ca. was going to be 93 decibles and other states that implimented sound levels were three decibles louder, 96. I don't know if that has changed and I'm too lazy to find it on the net.
Most any mx bike and that includes quads designed for racing won't meet the decible requirement. Maybe Arnie can help us out of this one also.
Last year when I first found out about decible levels, Ca. was going to be 93 decibles and other states that implimented sound levels were three decibles louder, 96. I don't know if that has changed and I'm too lazy to find it on the net.
Most any mx bike and that includes quads designed for racing won't meet the decible requirement. Maybe Arnie can help us out of this one also.
The FMF Q silencer will make amost every 2 stroke quieter than the 96 limit. They're kinda pricey, but they work.
This is straight off the Parks & Recreation website:
http://ohv.parks.ca.gov/default.asp?page_id=23037
38370(h) On and after January 1, 2003, off-highway motor vehicles,when operating pursuant to Section 38001, shall at all times be equipped with a silencer, or other device, which limits noise emissions.
(1) Noise emissions of competition off-highway vehicles manufactured on or after January 1, 1998, shall be limited to not more than 96 dbA, and if manufactured prior to January 1, 1998, to not more than 101 dbA, when measured from a distance of 20 inches using test procedures established by the Society of Automotive Engineers under Standard J-1287, as applicable.
Noise emissions of all other off-highway vehicles shall be limited to not more than 96 dbA if manufactured on or after January 1, 1986, and not more than 101 dbA if manufactured prior to January 1, 1986, when measured from a distance of 20 inches using test procedures established by the Society of Automotive Engineers under Standard J-1287, as applicable.
(2) The Off-Highway Motor Vehicle Recreation Division of the Department of Parks and Recreation shall evaluate and reassess the dates specified in paragraph (1) and include the findings and recommendations in the noise report required in subdivision (o) of Section 5090.32 of the Public Resources Code. (i) Off-highway vehicle manufacturers or their agents prior to the sale to the general public in California of any new off-highway vehicle model manufactured after January 1, 2003, shall provide to the Off-Highway Motor Vehicle Recreation Division of the California Department of Parks and Recreation rpm data needed to conduct the J-1287 test, where applicable.
http://ohv.parks.ca.gov/default.asp?page_id=23037
38370(h) On and after January 1, 2003, off-highway motor vehicles,when operating pursuant to Section 38001, shall at all times be equipped with a silencer, or other device, which limits noise emissions.
(1) Noise emissions of competition off-highway vehicles manufactured on or after January 1, 1998, shall be limited to not more than 96 dbA, and if manufactured prior to January 1, 1998, to not more than 101 dbA, when measured from a distance of 20 inches using test procedures established by the Society of Automotive Engineers under Standard J-1287, as applicable.
Noise emissions of all other off-highway vehicles shall be limited to not more than 96 dbA if manufactured on or after January 1, 1986, and not more than 101 dbA if manufactured prior to January 1, 1986, when measured from a distance of 20 inches using test procedures established by the Society of Automotive Engineers under Standard J-1287, as applicable.
(2) The Off-Highway Motor Vehicle Recreation Division of the Department of Parks and Recreation shall evaluate and reassess the dates specified in paragraph (1) and include the findings and recommendations in the noise report required in subdivision (o) of Section 5090.32 of the Public Resources Code. (i) Off-highway vehicle manufacturers or their agents prior to the sale to the general public in California of any new off-highway vehicle model manufactured after January 1, 2003, shall provide to the Off-Highway Motor Vehicle Recreation Division of the California Department of Parks and Recreation rpm data needed to conduct the J-1287 test, where applicable.
Thanks Vicki. 3 decibles doesn't sound like much but from what I understand, it is twice the noise. Just one less thing to worry about. I'm having an FMF Q silencer custom made for my new bike just for this reason.
It is a great big difference.
By the way... Oregon's is lower than ours and the Oregon Dunes have some pretty gnarly restrictions all around. We need to all keep that in mind when we hear someone say "let's make Glamis a National Recreation Area."
Vicki
By the way... Oregon's is lower than ours and the Oregon Dunes have some pretty gnarly restrictions all around. We need to all keep that in mind when we hear someone say "let's make Glamis a National Recreation Area."
Vicki
is nobody worried about this????
Its sad that nobody in Oregon will be able to ride thier quads
Its sad that nobody in Oregon will be able to ride thier quads
how can you find out if you're sound compliant? how do you check the decibal level?
Does anyone know the decible level allowed on a VW engine. And where we can get it tested in San Diego, before I haul it all the way to Glamis and find out that it is too loud.
If you go to the above posted website. ( Http://ohv.parks.ca.gov. )
There is a section on noise regulations. It also has a listing of motorcycle manufactures and their bikes by year using different exhaust configurations.
VERY Helpful.
And as you can see from the results, their isnt much that will pass
The Banshee is One 2 stroke that is an exception (Very quiet relatively)
although if you modify it that wont apply.
As I stated before there should be no noise regulations in the ISDRA since there is nothing for miles. Where this law should apply is in urban areas where there are homes and such.. We need to get the law ammended so we arent affected.
Is this a possibility...
Any comments Vicki?
There is a section on noise regulations. It also has a listing of motorcycle manufactures and their bikes by year using different exhaust configurations.
VERY Helpful.
And as you can see from the results, their isnt much that will pass
The Banshee is One 2 stroke that is an exception (Very quiet relatively)
although if you modify it that wont apply.
As I stated before there should be no noise regulations in the ISDRA since there is nothing for miles. Where this law should apply is in urban areas where there are homes and such.. We need to get the law ammended so we arent affected.
Is this a possibility...
Any comments Vicki?
Shouldn't it begin at the maufacturer? Don 't sell something non-combatible with the law. Unless you want to buy under the table 
Peace
Peace
| QUOTE (Comming @ Nov 30 2003, 03:41 PM) |
| We need to get the law ammended so we arent affected. Is this a possibility... Any comments Vicki? |
Absolutely.
I recently had a lively campfire chat with one OHV leader who happens to be a very strong proponent of these sound restrictions.
His view (shared by many it seems) is "less sound equals more ground" as in if we lower our noise levels we will become more acceptable to society and we won't lose our OHV parks.
To me, that's a rather naive approach since the anti-access groups don't come our way no matter how much we compromise, but everyone is entitled to their own beliefs.
We also talked about specifics of the restrictions and how they made outlaws of so many people overnight and the un-fairness of such a sudden hit. My point was that the off-road community didn't seem to have much involvement in this or other decisions, and that the off-road community leaders seemed to be making these decisions without really considering their community's needs or even likelihood of success. He was steadfast in his position.
Like I said, it was a lively discussion. Seems to me Bryan had to walk away to keep from getting too lively.
Then we got to the part of whether anyone ever thought of exempting certain areas or putting limits on the restrictions so that certain OHV areas that are never going to become housing projects would be exempt from these restrictions.
He said that idea had never even come up.
Back to your question... yes, I do believe this is something that should have been considered and could be done. Exemptions exist in many different forms so why not in this instance?
The hard part is, something like this would take a lot of work. Many have complained about the tightened restrictions but few have stepped forward to actually take on the battle.
Vicki
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