Page 1 of 1
How loud?
Posted: Fri May 09, 2014 3:43 pm
by bolzenanker
So being curious as to how loud my 42mm Gori pipe is I downloaded a free app to my iPhone and placed it on the floor about half a metre behind the tail can. Started and revved the scoot. Here's the unscientific results:
Anyone else?
Sent from my iPhone using Tapatalk
Re: How loud?
Posted: Fri May 09, 2014 6:02 pm
by Timbo
What's the above mean in English....
Re: How loud?
Posted: Fri May 09, 2014 6:12 pm
by Clubbook2
Your ears start to bleed at around 120db!!!!!!
Re: How loud?
Posted: Fri May 09, 2014 6:29 pm
by bolzenanker
Ears a chart....
Sent from my iPhone using Tapatalk
Re: How loud?
Posted: Fri May 09, 2014 10:22 pm
by Train Driver
We should be aiming for 80db or lower for our exhausts.
It should be an MoT failure but I doubt it ever will.
Re: How loud?
Posted: Fri May 09, 2014 10:41 pm
by rosscla
Looks like you could hold an average conversation over the top of it.
Re: How loud?
Posted: Fri May 09, 2014 10:46 pm
by Adyonekenobi
My 50 mm Gori was so loud I rode with ear plugs until I could stand it no more.
Sold that exhaust and fitted an NK road expansion, partially heat wrapped it and now it sounds fine.
No more ear plugs!
Ady
Re: How loud?
Posted: Sat May 10, 2014 5:00 pm
by bolzenanker
I don't find it too bad, I have a 50mm Gori on my Muggy engine which I'm just about to put in my S3. I'll do the same test and post the results.
Sent from my iPhone using Tapatalk
Re: How loud?
Posted: Sun May 11, 2014 6:48 pm
by bolzenanker
50mm Gori on a Mugello 186, same max figure, don't quite understand the other numbers...
Sent from my iPhone using Tapatalk
Re: How loud?
Posted: Sun May 11, 2014 8:57 pm
by tonydevon
The limit for registering a new bike trike or scooter is 99db
They test at a certain level related to max power revs. Think its 75% of the revs that you develop peak hp at.
From school days memory i believe that 3db increase equates to a doubling in volume