How loud is 105db..

[chris_c201]

Ye radium Kenny so exact same setup as you... sounds like I've got nothing to worry about so all good.

Cheers for the detailed input folks.
Chris

[ClarkyBoy]

Would be amazed if you hit 100db.

If you car is 105db, you want to think about ear protection for prolonged use or you will be deaf as a post.

Very interesting point Mr G,

I was on an IOSH course with work recently, any working environment above 80Db the employer must provide earplugs, and any working environment above 87Db it is mandatory (as this is where permanent damage can occur) to wear ear protection - putting this into real terms the class tutor took out their Ipad with a Db meter app, placed it on the desk in front of her and read the next slide, it was ready 66-72Db, that's just one person talking to a class of 10 people!

The M3 I race produces 104Db @ 3/4 rpm when measured by the MSA at knockhill, that's staggering, especially when you consider that pretty much the whole time on track your rev range is between 3/4 RPM and full chat!

the course instructor was actually hearing impaired, wearing 2 hearing aids, through infection when she was younger, she was no more than 30, really switched on and was telling us that when the aids come out she suffers from contant ringing - tinnitus,

so from that course alon I will now not be doing races, trackdays or riding on the road with the ducati without plugs in!

scary stuff.

as for your car and Db, sorry, cant help, im useless with that stuff!

[Scottish Scrutineer]

I was on an IOSH course with work recently, any working environment above 80Db the employer must provide earplugs, and any working environment above 87Db it is mandatory (as this is where permanent damage can occur) to wear ear protection - putting this into real terms the class tutor took out their Ipad with a Db meter app, placed it on the desk in front of her and read the next slide, it was ready 66-72Db, that's just one person talking to a class of 10 people!

What the tutor failed to make clear was that the Noise at Work limits are based on a time weighted average over 8hrs. A simple sound level without considering the exposure time is not appropriate for Noise at Work purposes, except that there is a peak level which should not be exceeded of 140dB.



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Renny

[Ferg]

The distance on that MSA sheet was interesting. For the noise check at Outlon, they appeared to put the meter right into the exhaust exit. Although I don't know if the sensor was on the end of the stick.

[robin]

I wonder whether the stick sets the 1m distance and 45 angle. Cheers Robin

[Scottish Scrutineer]

I wonder whether the stick sets the 1m distance and 45 angle. Cheers Robin

That's what quite a few do. The stick sets the distance and angle. I prefer to use a mini tripod as it takes up less space


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Renny

[ClarkyBoy]

I was on an IOSH course with work recently, any working environment above 80Db the employer must provide earplugs, and any working environment above 87Db it is mandatory (as this is where permanent damage can occur) to wear ear protection - putting this into real terms the class tutor took out their Ipad with a Db meter app, placed it on the desk in front of her and read the next slide, it was ready 66-72Db, that's just one person talking to a class of 10 people!

What the tutor failed to make clear was that the Noise at Work limits are based on a time weighted average over 8hrs. A simple sound level without considering the exposure time is not appropriate for Noise at Work purposes, except that there is a peak level which should not be exceeded of 140dB.



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Renny

It is quite possible that the instructor did explain that part and I had stopped listening by then! lol

still scary facts though, I bet that the inside of the race car peaks at 140 more than once in a race?

I wonder if there is any data from inside cars to support?

I might get me a little Db Metre, would be interested to see exactly what the fireworks do in my spare time peak at!

[Scottish Scrutineer]

Yeah, H&S courses can be tedious.
A lot of guys wear hearing protection whilst racing, the ones that don't are deaf or have reduced hearing. I have 2-3 members of my team have hearing problems. I try to wear protection when on pit wall, of if noise testing.
A basic meter will show peak levels, even the phone apps do it.


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Renny