afpreppie04
The Thread Killer
- Joined
- Dec 30, 2007
- Messages
- 747
- Reaction score
- 6
- Points
- 0
- Location
- Rio Rancho, New Mexico
Here's what I found after some searching on AMA's website. Looks like 92 db is the limit for all motorcycles at idle. At the higher RPM (not specified what that RPM actually is) the limit is 100 db for 3 and 4 cylinder bikes, and 96 db for <3 cylinder and >4 cylinder bikes. This makes me wonder what the requirement will be for the person that brings the rare rotary-powered bike in for measurement. On the title for my RX7 it is classified as a 4 cylinder but that just shows how great the local DMV is, as I have seen others where it shows 0 cylinders. The sound is measured at a 45* angle from the exhaust, 20 inches from the pipe.
Here's the article if you want to read it all:
New stationary on-highway motorcycle sound test standard released by SAE
Here's the article if you want to read it all:
New stationary on-highway motorcycle sound test standard released by SAE