SV650.org - SV650 & Gladius 650 Forum

SV650.org - SV650 & Gladius 650 Forum (http://forums.sv650.org/index.php)

- Bikes - Talk & Issues (http://forums.sv650.org/forumdisplay.php?f=129)

- - how loud is 105db (http://forums.sv650.org/showthread.php?t=168562)

curvy custard

09-07-11 10:19 PM

how loud is 105db

looking at track days and they all have various noise limits, but now loud is an sv650 with a race can? mines just a cut system with an art race can, clearly stamped not for road use, what sort of db levels to these bikes put out?

Mr Speirs

09-07-11 10:25 PM

Re: how loud is 105db

You'll be fine.

And in answer to your question to the human ear 105db is twice as loud as 99db ;)

federer

09-07-11 11:01 PM

My pointy with a fuel stubby can at 3/4 revs was 99db with baffles in at Combe. Not sure if that helps ya much but might give you an idea.

andrewsmith

10-07-11 01:23 AM

Re: how loud is 105db

You'll be alright.

A full Arkapovic system with stubby is around 110dB
A custom Hindle system (built for the track) was clocked at 104.5 in the afternoon and 94 in the evening

105dB is roughly what a night club will be playing music at

tom-k6

10-07-11 09:37 AM

Re: how loud is 105db

how i do hate the fact that decibels arent on a nice gradient but more steps up to the next decibel.

curvy custard

10-07-11 11:15 AM

Re: how loud is 105db

thanks guys

Jackie_Black

10-07-11 12:18 PM

Re: how loud is 105db

Aye decibels are on a logarithmic scale I think. Every 3db is a doubling of the perceived volume from what i remember.

Mr Speirs

10-07-11 01:46 PM

Re: how loud is 105db

Quote:

Originally Posted by Jackie_Black (Post 2570930)

Aye decibels are on a logarithmic scale I think. Every 3db is a doubling of the perceived volume from what i remember.

3db is a doubling of volume electronically measured.
6-10db (depending on air temp/humidity) is a doubling of perceived volume.

Jackie_Black

10-07-11 07:19 PM

Re: how loud is 105db

ah see, amazing what you learn on this site.

flymo

10-07-11 07:26 PM

Re: how loud is 105db

its very hard to gauge by ear. Only way to do it properly is with a noise meter.

hardhat_harry

10-07-11 07:36 PM

Re: how loud is 105db

My full akrapovic titanium is 100db at 5000rpm doesnt sound so bad when being noise tested but I have been told when its on track at full chat its really loud.

Im assuming Akrapovic designed it that way.

thefallenangel

10-07-11 10:27 PM

Re: how loud is 105db

An exposure above 85db for longer than half an hour requires ear protection. In work we used the noise of a pump to show an increase in efficiency and how it's reduced noise has improved the set up of water treatment. Noise is dangerous.

Nobbylad

10-07-11 10:57 PM

Re: how loud is 105db

Quote:

Originally Posted by thefallenangel (Post 2571239)

Noise is dangerous.

I do keep telling the wife about that.....:rolleyes:

matt_rehm_hext

13-07-11 05:34 PM

Re: how loud is 105db

A or C weighted?

Mr Speirs

13-07-11 05:35 PM

Re: how loud is 105db

A weighted

Lucas66

13-07-11 07:04 PM

Re: how loud is 105db

i had a leo vince slip on on my cbr600rr i had and at my first ever trackday at cadwell it clocked 104db by tester wtf lol

All times are GMT. The time now is 02:52 AM.