New dB sign at Winchester Bay, OR

[Senator]

It shows what SILENCERS PASS, MEET or FAIL in the ODNRA.

[Krmnalmind]

Guess they didn't need to add DASA sense the quietest thing they make is a 98 DB lol.

[Mrs. Senator]

If nothing else, it lets people know just how out of line they are so there's no excuses on get-pulled-over-and-pay-the-ticket day.

It may also spark discussion between friends that could go like this:

"Hey dude, it says here you're way over the limit with that exhaust of yours! When our riding areas are all closed, I might just beat your ass for being so ignorant!"

[ROBS08YFZ450]

Do you have a better shot of the list (passed/failed)?

[Senator]

Originally Posted by ROBS08YFZ450

Do you have a better shot of the list (passed/failed)?

Here Rob, this one should be gigantic

[ltd.yfz]

At Dunefest last year i had the banshee tested and was 87db's with cascade silencers on it.

[Senator]

Our Tecates were both legal too. And the YFZs both ran 86 dB

[ltd.yfz]

Ya i need to get new exhaust for the yfz, just haven't decided which one yet.

[Senator]

...from the USFS website regarding Exhaust noise.


Less Sound = More Ground
Sound is a huge issue at the Oregon Dunes. If you exceed the limit, you could get a citation. More importantly, sound violations could lead to more closures. Know the sound limits, obey them, and keep riding!

The Tests
We conduct sound tests using decibel meters and tachometers. Using the model and year, we look up the RPM at which to test your OHV using the Motorcycle Industry Council’s Stationary Sound Test Manual for Off-Highway Motorcycles and ATVs. The tachometer is set, and the decibel meter is read when it hits the correct RPM. The decibel meter is held 20 inches away from the exhaust output, and at a 45 degree angle.

How do I find out if I'm legal?
If you’d like to find out the decibel level of your machine, the Oregon Dunes crew offers complimentary sound tests. Simply flag us down, or call the OHV Coordinator at 541-271-6040 to schedule and appointment. If you are too loud, you are at risk of getting a citation, so know before you go!

Exhaust Sound Test Averages ~ 2007
Exhausts marked with asterisk * pass the Oregon Dunes Sound Limit of 93

**insert** The exhaust tests below are in the following format

Exhaust Brand
Number of Vehicles Tested
Average Decibel Level

Alba
7
100

CPI
18
100

DRD
43
99

FMF Q
5
86 *

FMF SST
6
92 *

GYTR
11
100

HMF
19
100

LRD
22
99

NMOTION
6
108

ProCircuit
21
95

Stock
478
90 *

Toomey T5
20
97

Toomey w/ Hush Kit
5
90 *

White Brothers
26
98

Yoshimura
81
96

Yoshimura w/Quiet Core Insert
7
93 *



Linky: Siuslaw National Forest - OHV - Rules

[SHOWTIME]

wow the sign is lame. i cant believe they monitor that stuff. crazy if you ask me!