IMPBA noise rule & dB meters

[Scott Norris]

So nobodys gonna tell me where this pipe came from huh. Don you know I'll aggrevate you this weekend until you will beg to tell me.

 

[John Finch]

It's a BH Hanson pipe. 165 dollars! It has a series of flat plates in the pipe rather than a convergent cone. It is quiet but has a good deep sound to it. This is the technology we have been looking for. Back yard or heat racing....it's the bomb! I already found a way to get even more speed out of the pipe, which makes it faster than my 96 db pipe.

 

[Scott Norris]

Thanks John. That is VERY Interesting! I'm all for quiet Boats as long as we ALL have Quiet Boats!

 

[John Finch]

I know what your saying. It can be hard to hear your engine with others making much more noise. Some day we will all have quiet pipes and look back and say " what was all the fuss about" . In the mean time, some of us have to set the example and get the ball rolling or it will never happen. It was 1993 when I did the Nitro News series and did all the noise testing. **** Tyndal pushed the noise issue when he was IMPBA president and was criticised for it, but you know what: The sead was planted by **** and many others and it has grown. It's gonna happen or we ain't gonna be running boats.

 

[El Zorro]

It is interesting reading all of the posts on this subject. Not a lot has changed in the last 10 years. Some of the same people I use to butt heads with about this are still fighting it...........WHY??? I'm just gonna sit back and keep reading..................

****

 

[Scott Norris]

It is interesting reading all of the posts on this subject. Not a lot has changed in the last 10 years. Some of the same people I use to butt heads with about this are still fighting it...........WHY??? I'm just gonna sit back and keep reading..................

****

:lol: :lol: :lol:

 

[Don Ferrette]

It's a BH Hanson pipe. 165 dollars!

That would actually be a $179.00 retail price. Expensive but unbelievably quiet. B)

 

[Ken Retallick]

It's a BH Hanson pipe. 165 dollars!

That would actually be a $179.00 retail price. Expensive but unbelievably quiet. B)

This is irritating me!! $179 that you would spend in a flash to go 5mph faster, but balk at because it wont gain you speed, What it does do is hopefully let you keep your ponds to do ANY speed.

No water, no racing.!!!!!!!!!!!!

 

[Don Ferrette]

It's a BH Hanson pipe. 165 dollars!

That would actually be a $179.00 retail price. Expensive but unbelievably quiet. B)

This is irritating me!! $179 that you would spend in a flash to go 5mph faster, but balk at because it wont gain you speed, What it does do is hopefully let you keep your ponds to do ANY speed.

No water, no racing.!!!!!!!!!!!!

Easy there Ken, I already own 2 of these pipes.

 

[Ken Retallick]

It's a BH Hanson pipe. 165 dollars!

That would actually be a $179.00 retail price. Expensive but unbelievably quiet. B)

This is irritating me!! $179 that you would spend in a flash to go 5mph faster, but balk at because it wont gain you speed, What it does do is hopefully let you keep your ponds to do ANY speed.

No water, no racing.!!!!!!!!!!!!

Easy there Ken, I already own 2 of these pipes.

Not directed at you personally Don, but anyone

We have had a 92 Db limit in Australia for years, and nobody complains, its just how it is. Many of us would like to see it lowered further, to stay one step ahead of any potential noise issues.

 

[Don Ferrette]

Ok here is the thread from the dB rule so stop posting about it on the 2007 Internats thread & please continue it here where it belongs!!!

 

[Brian_Nelsen]

Don

You are the man, how did you find this old thread

Anyway There are those that would say that 92db is still to loud. I would agree I think we should be around 88db which is still likley to loud for some people. I think we need to work to get the noise down no matter what. And I gotta tell it wont get done with out some type of rules.

Why? Well in my humble opinion it is because we all want to hear our boats to make sure they are tuned how we wnat them and we believe that low noise means restriction on exhaust and that equats to a slow boat. I disagree as long as we all have to play by the same rules set the limit where ever you want.

Now I think what we should be looking at is the testing method. The one in the rule book is pretty clear but there is room for error. So I am doing some testing to help with the current rule. it won't be a major scientific study As I am no Doc Turner but I will document what I have learned as well as I can.

I have actually been working on this since the internat. Iwill not go into great detail yet as it would take allot of space and I am not done yet.

Brian Nelsen

 

[Piston1]

This is not an old thread Mr. Nelsen. Keep in mind for your noise research project, that the ultimate intent is to preserve race water without creating futile rules that overburden legitimate racing clubs and the membership in general.

 

[AWaddle322]

Don

You are the man, how did you find this old thread

Anyway There are those that would say that 92db is still to loud. I would agree I think we should be around 88db which is still likley to loud for some people. I think we need to work to get the noise down no matter what. And I gotta tell it wont get done with out some type of rules.

Why? Well in my humble opinion it is because we all want to hear our boats to make sure they are tuned how we wnat them and we believe that low noise means restriction on exhaust and that equats to a slow boat. I disagree as long as we all have to play by the same rules set the limit where ever you want.

Now I think what we should be looking at is the testing method. The one in the rule book is pretty clear but there is room for error. So I am doing some testing to help with the current rule. it won't be a major scientific study As I am no Doc Turner but I will document what I have learned as well as I can.

I have actually been working on this since the internat. Iwill not go into great detail yet as it would take allot of space and I am not done yet.

Brian Nelsen

Brian,

After reading the other thread, I have decided to post the following web site for you to look at. Please read under the calabration part of this. It say that meter need to be calabrated when significant tempature otr humidity changes occur. if you look at some of meter listed instruction manuels you will see that they recomedend calabration if tempature changes 10 degrees or humidity changes 5 percent. the good part most of these meters have built in calabrators that take approximately 5 seconds for calabration and they can be had for under $500.00 which I belive to be with in the means of most clubs. A simple calabration once a year will not cut it as you implied.

web site http://www.environmental-center.com/articl.../article138.htm

This should be a creditable source as it is an OSHA standard set forth by our goverment.

Also I would like to point out that Joe W had no problems with noise as he did not recieve a warning all week for noise, He is simply stating what he is seeing and it seems that this is been seen by more than just him. If you are not seeing it open your eyes. If this problem is not corrected the IMPBA will be torn apart.

Sincerely,

Allen waddle

 

[Don Ferrette]

This is not an old thread Mr. Nelsen. Keep in mind for your noise research project, that the ultimate intent is to preserve race water without creating futile rules that overburden legitimate racing clubs and the membership in general.

The ultimate intent is two fold- to preserve race sites AND the racers hearing.

 

[AWaddle322]

This is not an old thread Mr. Nelsen. Keep in mind for your noise research project, that the ultimate intent is to preserve race water without creating futile rules that overburden legitimate racing clubs and the membership in general.

The ultimate intent is two fold- to preserve race sites AND the racers hearing.

Then why were the muffler part of the rule done away with. it looks like to me all it did was make it were 20 boats can be as loud as 90 boats. if you do much recearch into noise you will see that it is not the five minutes of exposure at the dbs we are talking about that hurts your hearing it the all day exposure that hurts your hearing. and as far as saving sites would you prefer to hear boats 92 db all day long or be annoyed for less than half the day with the bigger boats. Don you are a smart man do not let them pull the whool over your eyes and pea down your back and let them tell you it is raining.

Allen

 

[Brian_Nelsen]

Allan

Thanks for the information on calibration. My meter which was not 500.00 dollars does not have this feature. I do have a friend in the music industry that calibrates it for me. We have done this both in his studio and at the pond. We have not had to change anything since the first calibration. That is what my statment was based on. My meter was in the 250.00 dollar range so it was not just some cheap one.

I do not know what the devise is called (only becasue I have never asked him) that we used to calibrate the meter but it was small and very portable although we had to use an inverter at the pond to get the ac power.

That said again I thank you for the information and I will look into this deeper as the day wear on here.

My eyes are open, and I see many things. I was at the internats and spent a bunch of time at the meters. Again I am no expert I just go out and try things to see if it makes a difference. I saw that if you looked at the meter when the boat was past it the level was high than when it was at 90 degree's to the meter. so if you where just going for the highest reading then it has to be after the boat has passed the front on the meter. Thats not what the rules says it says 90 degrees. Now we could argue all day about the fact that you can see the boat and the mtter at the same time, and you can't. In the testing I have done I have a person call out when the boat is infront of the meter. I would love to be able to get a hand or foot switch that could capture the reading at that point in time.

Brian

 

[Piston1]

Allen go back and re-read the whole context of what I wrote, specifically the second part. By the way it is "Calibration", not "Calabration". I have always voted "NO", did you vote.

 

[Chris Wood]

I hate to say it but this very topic is PART and i say PART of the reason that nobody has signed up to run the 07 nats..

just wish there was a solution to this.

chris

This question is for bill zuber..

Correct me if i am wrong.. At the board meeting the week of the nat's steve cooper was contacted by someone ( i am not sure who ) that is on the board of the impba and was asked to come to the board meeting to discuss the DB situation. And sat there for the whole night was not asked a question regarding this nor able to speak about it..

Like i said correct me if i am wrong.

Just curious about this since steve is a manufacture of nitro pipe's and was asked to sit in on this, why not let him speak his opinion.. ??

if i have misunderstood this i applogize.. this was info that was passed along to me.

chris

 

[Piston1]

The solution is to go back to the previous rule.