BAD HTM SR 24

I got that cop that was harrassing me on video while he performed a decibel test on my boat,after escorting me off the river,giving me a $75.00 ticket and confiscating my CDL and verbally insulting me.Icalled his superior and asked him what the report said,and it was completely different from what really happened. I then went down to the Head of Internal Affairs and showed him the video, YOU SHOULD OF SEEN THE LOOK ON HIS FACE,he then perceeded to give me back my CDL,come out to the river and meet with us boaters and apologize for this one bad apple,get the ticket dropped,and suspend that cop from river patrol.

I HAD WON


man i sounded like an idiot at the begining of this thread,hope all apologies from me were accepted.Idid buy mufflers,man it makes my 605ci sound like a small block.wont be using them to often

Cain Crew

well my eyes now hurt from reading this whole thing! Great thread. Love the sound of BBC...but the sound of my 283 in my '63' Chris is the best sound of all! glad to here (sorry for the pun) all is working out. chip

rbtnt

Way to go BAD HTM SR 24. Glad you can boat without being harassed now.

Does anyone know the testing requirements for SAE J2005 or where they can be found on-line?

Audiofn

I use DB meters all the time for room set up, and have been trained how to use them properly. I have to tell ya they are out in the open with all the ambient noise that is on a lake they will be VERY innacurate. ANY ambient noise can and will cause false readings. When I do a theater set up I go so far as to only do it at night, turn off all heat and airconditioning, and make sure that the doors are closed and windows shut and curtains drawn. If some one walks in the house it can cause false reads and I can see the needle bounce as they take each step. Also They have to have the weight on the meter to slow, but with the radio shack meter that weight is still to fast for the pulsing that comes out of a motor. The first thing to look for when he is doing the test is that he HAS to hold the meter as far away from his body as possible. He should hold it out to the side. The reflection of noise off his boddy will cause the meter to read high. He also has to hold the meter perfectly straite up and down. If he tilts the meter at all off straite up and down the reading is wrong. We are so critical when doing theater set ups we use a special stand and level the meter before we do any readings. I know that if I want to fool the meter I can tip it at the speakers I want to read a little lower. Also as DJD has said the reading should be done in the open with no walls around as they cause huge problems for the meter. You state laws will dictate if there is allowed to be a boundry/wall on one side of the boat while they take the read. So if this guy has a hard on to bust your balls and you do drop your output by 3 db he can just tip the meter forward a little, or take the test with a wall near by, and you will have to drop another 3db. Dude it sucks to be were you are but I think your only solution hear is going to get a supervisor to take a reading with you and the other guy and make sure the test is done in a controled environment and make sure that you all agree it is done correctly. Then have a deal were the guy agrees not to bust your balls anymore about sound. I am sure however that he can as they do to me still board you for any reason and do a "routine boarding and inspection".

G-Force

Yeah, he makes boating on the Chain a bunch of fun, doesn't he?

NotTOOBAD

So does anyone actually have a copy of SAE Standards J2005 or J1970 that they could post here or provide a link to?

Seems like that would at least make us more knowledgeable of how exhaust noise should be tested if we get pulled.

Tom Earhart

TURBOCHARGE IT, YOU WILL GO FASTER AND PASS THEIR NOISE TEST

Mark in So. MD

Powerboat mag has a huge article on exhaust...noise ordinances ....

They have 19 write-ups(16 pictured) on silencers. They talk about the noise laws for each state.

SAE J-2005 is for STATIONARY testing(most states between 86-90 decibles)

SAE J-1970 measures the sound of a moving boat as heard from shoreline, usually 50 feet away. The most common limit for this form is 75.

Hope this helps
Mark Fitzgerald
[email protected]

BAD HTM SR 24

Here is how it works.To do the idle test correctly the officer has to board your boat and hold the meter 4ft from the back of your boat and 4ft off of the water.90 decibels and under is passing.

To do a power on test the officer can be no further than 20 ft from shore,you however can be as far from shore as you want and there is no wording in the laws that dictate how many rpm's you turn or for how long when performing the test.If you are on a body of water that has a strong enough current to push you away from the officer ,drift down stream from him as far as you want and then start up and at idle speed go back upstream angling away frop the officer so by the time you reach his boat you are a good distance from him. There is no wording in the law that states how close you have to be from the officer who is performing the test.So if you boat on a lake that doesnt have a current and see a officer that you think might want to decibel you get as far away from the shore as possible before he stops you,because he has to be 20 ft from shore to properly do the under power test.If he tells you to come over to the shore tell him to show you where it says how far off of shore you have to be,he wont be able to. 75 decibels or less is passing
Ihave asked about ambient noise when my first test was performed and at idle i was 93,the officer said that ambient noise was caculated into the meter,but he was not giving tickets that day so not to worry about it,otherwords he had no idea what i was talking about and didnt want to lose in court.Plus he was standing on the dock with the meter 1 ft from my tips.Iwill try to get a copy of the actual law,but this is right from the Head of Internal Affairs.

Mark in So. MD

Here are just a few states, this is definitely worth the $4.50 cover if you dont have a subscription.

Illinois
Max noise level--YES
Level--J-2005 90dB(A-scale); J-1970 75dB(A-scale)
Alteration Law--No

Texas
Max--NO
Level--N/A
Alteration Law--No

New York
Max--Yes
Level--J-1970 75dB(A-scale); J-2005 90dB(A-scale)
Alteration Law--Yes

Ohio
Max--Yes
Level--J-2005 90dB; J-1970 75dB
Alteration Law--No

Massachusetts
Max--Yes
Level--Federal Standards(ok, what ever that is)
Alteration Law--Yes

I dont know why some states have both (J 2005) and (J 1970), maybe the cops could choose, who knows, but i typed it exactly how Powerboat magazine wrote it. But now i need to find out why some say (A-scale) and why some dont.