Okay so the new AMA sound test device came out and the max for 2 cylinder motorcycles, which is all of us, is 92 decibels. So how loud is this? I am not looking for a scientific explanation, I already found that. What I need is somebody to tell me how loud most Harley's are. How loud are drag pipes for instance? I guess just some good real life examples are what I am looking for. I run Shacks with the baffles in and I am just curious as to about how loud they are.

 

90DB = lawnmower, shop tools, truck traffic; 8 hours per day is the maximum exposure (protects 90% of people).
90-95 = Level at which sustained exposure may result in hearing loss
100 = chainsaw, pneumatic drill, snowmobile; 2 hours per day is the maximum exposure without protection.
Hope This Helps.........

 

Here's a chart of common noises by decibel
Sound levels of common noises Decibels Noise source Safe range 30 Whisper 60 Normal conversation 80 Heavy traffic, garbage disposal Risk range 85 to 90 Motorcycle, snowmobile, lawn mower 90 Belt sander, tractor 95 to 105 Hand drill, bulldozer, impact wrench 110 Chain saw, jack hammer Injury range 120 Ambulance siren 140 (pain threshold) Jet engine at takeoff 165 Shotgun blast 180 Rocket launch

 

Your average bar on a weekend night and a live band will be running in the 95db range..
Drag pipes at full throttle would easily be in the 110db range.
I think an iPod goes to about 100db or 105db at full volume
A touring bike with stock mufflers at full throttle would probably be in the 80db neighborhood.