125 DECIBEL 900 Custom...

grumpywirth · 08-07-2008

At work today one of our engineers told me to come out to my bike with keys in hand at break time. When I did I was met by him and a few others. He opened up a fancy case and pulled out a really expensive looking Db meter. I fired it up and he began taking readings.
During the warm up period my bike put out an impressive 108 db.
When it idled down finally, it registered about 96-97 db.
He then made the mistake of kneeling down near the rear of my bike and told me to goose it a little...I think he jumped about a foot off the ground. It was great. With a good snap to the throttle it reached 125 db!
thought this was pretty cool because I wondered how loud they really are.

Oh yeah, I have Cobra spdstr shorts...

artz · 08-07-2008

huh ? whatcha say ? LOL... crazy engineers...

RichLockyer · 08-08-2008

That's a ticket in Anaheim, Temecula, Long Beach, Huntington Beach, and Rancho Santa Margarita.

loowwride · 08-08-2008

grumpywirth what seat do you have looks like a solo by the way i have the same pipes they sound great now i know how loud they realy are thanks

markbrumbaugh · 08-08-2008

Well whoopdie do for you. You are loud. Congratulations

grumpywirth · 08-08-2008

Quote:

Originally Posted by markbrumbaugh

Well whoopdie do for you. You are loud. Congratulations

Past your Bedtime? Geez, if it doesnt interest U, why post replies?

grumpywirth · 08-08-2008

Quote:

Originally Posted by loowwride

grumpywirth what seat do you have looks like a solo by the way i have the same pipes they sound great now i know how loud they realy are thanks

Stock seat, modified a few times, thats what I ended up with...

Outamyvulcnmind · 08-08-2008

Quote:

Originally Posted by RichLockyer

That's a ticket in Anaheim, Temecula, Long Beach, Huntington Beach, and Rancho Santa Margarita.

Can't tell with specifying the distance from the source and the weighting scheme.

I'm currently in a development project with SCCA GT-1 team trying to develop a legal sound control exhaust while creating the least power loss. The SCCA spec is only <104 dB @ 50 ft, using a C-weighted scale. It's amazing how little science has been applied to this area.

Cheers!

John

RichLockyer · 08-08-2008

That's the problem... the cops tend to ignore the science too.

Fed standards are 80db, 50ft away, bike moving 55mph straight and level.

The City of Anaheim has a standard noise ordinance for "exterior noise"... 82db, no distance specified.

Ya... so LEGALLY, in the city of Anaheim, you can't sound a horn, yell to a friend, operate a metal grinder, etc....

The Vulcaniser · 08-08-2008

Australia wide, it's a maximum of 93db and that's usually meant to be taken on a drive/ride past at 80kph. LOTS of V-Twins have cobras or some form of de-baffled pipes, some get booked...... usually, they leave them alone.

The Vulcaniser · 08-08-2008

Quote:

Originally Posted by markbrumbaugh

Well whoopdie do for you. You are loud. Congratulations

take two of these, and if your problem persists, come back and see me in the morning

predfan2001 · 08-08-2008

My horn is only 115 db. With Cobras you'd be just as well off to rev it up as blow the horn.

(btw, just noticed RichLockyer is from Chino...hope everything is ok after the quake...isn't that where it was centered?)

Rob427W · 08-08-2008

Just put on the shorts myself, about a week ago now. What a great sound, and a great ride!

Is the Fi200R completely necessary? If I don't put one in, what would happen?

windsurfdog · 08-08-2008

Quote:

Originally Posted by RichLockyer

That's a ticket in Anaheim, Temecula, Long Beach, Huntington Beach, and Rancho Santa Margarita.

That would be a well deserved ticket, thank you...IMHO, of course...

insolentminx · 08-08-2008

yeah, i can believe that!
mine are pretty damn loud, but it's nice to have a rough idea of just HOW loud they are!

the legal limit here is 98 if i recall.

I rode past a motorcycle cop who was parked at the bottom of my road yesterday. I gunned it a little as i dropped down a gear for the intersection ahead. ... I also nodded at him, but he just stared at me.

Not sure if he was trying to figure out if my pipes were too loud or what the hell kinda sexy bike it was that i was riding

i think it was the latter, as i didn't see him following me with his lights on.

Quote:

Originally Posted by Rob427W

Is the Fi200R completely necessary? If I don't put one in, what would happen?

Not necessary for just the pipes. With an air kit too, you'll need it though. I think that answers the second question too

RichLockyer · 08-08-2008

Quote:

Originally Posted by predfan2001

(btw, just noticed RichLockyer is from Chino...hope everything is ok after the quake...isn't that where it was centered?)

Yup... epicenter was about 3 miles from my place, and everything is fine.
Didn't even have anything piled in the garage fall on the bike... just a stack of bills next to the computer ended up in the floor and the cats were a little freaked out.

wild_deuce03 · 08-08-2008

Quote:

Originally Posted by windsurfdog

That would be a well deserved ticket, thank you...IMHO, of course...

azwiley1 · 08-08-2008

Quote:

Originally Posted by markbrumbaugh

Well whoopdie do for you. You are loud. Congratulations

Dang, what stray dog peed in your conrflakes today?
I second the comment that if you weren't interested, why read and/or comment?

I thank the OP for posting this info, it gives a specific pipe, on a specific bike and tells us how loud they really are. Makes us more informed when shopping.

WhiteFox · 08-08-2008

Glad your ok Rich, Any news on the scheduled "Big ONE" thats supposed to make much od Califorina fall into the sea??

RichLockyer · 08-08-2008

Quote:

Originally Posted by WhiteFox

Glad your ok Rich, Any news on the scheduled "Big ONE" thats supposed to make much od Califorina fall into the sea??

I can look forward to that day because the north end of the fault will be the first to go in.

I hope all of our friends in the San Francisco area move inland before it happens

But seriously... they don't know when it will happen, but they expect a 200 mile long surface rupture beginning in Salton Sea (near the Mexican border) and continuing into Wrightwood or Lancaster (Edwards AFB).
Here's a projected "shakeout scenario" showing relative shaking intensity for various areas.
http://urbanearth.usgs.gov/wp-conten...simulation.wmv
This file is in real-time... with a counter at the lower left.

It's gonna be bad... especially for San Bernardino. There will be only one way out of the Los Angeles area... I-5, 10, 14, 15, will all be impassible... only way out wille be south on the 5 to San Diego and across I-8 near the border to Arizona.

In the attachment (edited a screen capture from the shakeout), the yellow dot is where I live.

08-07-2008	#1 (permalink)
grumpywirth Made It To Second Gear BTK Beginner Join Date: Jul 2008 Location: Corning, Ca. Posts: 80	125 DECIBEL 900 Custom... At work today one of our engineers told me to come out to my bike with keys in hand at break time. When I did I was met by him and a few others. He opened up a fancy case and pulled out a really expensive looking Db meter. I fired it up and he began taking readings. During the warm up period my bike put out an impressive 108 db. When it idled down finally, it registered about 96-97 db. He then made the mistake of kneeling down near the rear of my bike and told me to goose it a little...I think he jumped about a foot off the ground. It was great. With a good snap to the throttle it reached 125 db! thought this was pretty cool because I wondered how loud they really are. Oh yeah, I have Cobra spdstr shorts...

08-07-2008	#2 (permalink)
artz Clutch Cadet BTK Expert Join Date: May 2008 Location: west Georgia Posts: 378	huh ? whatcha say ? LOL... crazy engineers... __________________ Stay clear of the wolfpacks, read the road, and drive like everyone is out to get you.

08-08-2008	#3 (permalink)
RichLockyer Patriot Guardian Extreme Forum Supporter Join Date: May 2006 Location: Chino, CA Posts: 18,617	That's a ticket in Anaheim, Temecula, Long Beach, Huntington Beach, and Rancho Santa Margarita. __________________ - Rich 2006 1600 Classic Member CORVA, BRC Patriot Guard Rider

08-08-2008	#4 (permalink)
loowwride Newbie Join Date: Jul 2008 Location: Pueblo,Co Posts: 13	grumpywirth what seat do you have looks like a solo by the way i have the same pipes they sound great now i know how loud they realy are thanks __________________ 08 900 CLASSIC

08-08-2008	#5 (permalink)
markbrumbaugh Mark in Houston BTK Intermediate Join Date: Mar 2007 Location: Houston Posts: 260	Well whoopdie do for you. You are loud. Congratulations __________________ 2006 Vulcan 900 Classic 2007 Morphous PGR Spring Texas

08-08-2008	#9 (permalink)
RichLockyer Patriot Guardian Extreme Forum Supporter Join Date: May 2006 Location: Chino, CA Posts: 18,617	That's the problem... the cops tend to ignore the science too. Fed standards are 80db, 50ft away, bike moving 55mph straight and level. The City of Anaheim has a standard noise ordinance for "exterior noise"... 82db, no distance specified. Ya... so LEGALLY, in the city of Anaheim, you can't sound a horn, yell to a friend, operate a metal grinder, etc.... __________________ - Rich 2006 1600 Classic Member CORVA, BRC Patriot Guard Rider

08-08-2008	#10 (permalink)
The Vulcaniser I have been Vulcanised! Extreme Forum Supporter Join Date: Dec 2007 Location: Hunter Valley NSW Australia Posts: 861	Australia wide, it's a maximum of 93db and that's usually meant to be taken on a drive/ride past at 80kph. LOTS of V-Twins have cobras or some form of de-baffled pipes, some get booked...... usually, they leave them alone. __________________ Growing old is mandatory, growing up isn't Ulysses Club - Grow Old Disgracefully 2007 Vulcan 1600 Classic Blue & Silver.

08-08-2008	#12 (permalink)
predfan2001 Pro Blinker Tapper BTK Expert Join Date: Oct 2007 Location: Clarksville Tn Posts: 925	My horn is only 115 db. With Cobras you'd be just as well off to rev it up as blow the horn. (btw, just noticed RichLockyer is from Chino...hope everything is ok after the quake...isn't that where it was centered?) __________________ 2007 Vulcan 900 Custom 1998 Lakota 300

08-08-2008	#13 (permalink)
Rob427W Made It To Second Gear BTK Beginner Join Date: Jun 2008 Location: Harrisburg, Pennsylvania Posts: 75	Just put on the shorts myself, about a week ago now. What a great sound, and a great ride! Is the Fi200R completely necessary? If I don't put one in, what would happen? __________________ :-D Good to see ya.

08-08-2008	#19 (permalink)
WhiteFox Enjoy the journey! BTK Beginner Join Date: Sep 2006 Location: Just outside of Pullman, Wa Posts: 98	Glad your ok Rich, Any news on the scheduled "Big ONE" thats supposed to make much od Califorina fall into the sea?? __________________ Just trying to find any excuse to ride the 900.