K11 Owners Group

owrstrich · Posted: Tue Jul 28, 2009 1:14 pm Post subject: Loud Pipes

at our am job today a lifestyle rider asked me to get the db of his moto...

here it is... the black one...

moto off... ambient environment... 74 db...

idle at riders ear... 99 db...

idle 2 feet behind pipes... 105 db

idle 12 feet behind pipes... 101 db...

cracking the throttle at riders ear... 112 db...

cracking the throttle 2 feet behind pipes... 126db...

cracking the throttle 12 feet behind pipes... 121 db...

f y i...

j o
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yeeeeeehaaaaaaa...

whyoldbill · Posted: Tue Jul 28, 2009 1:34 pm Post subject: Loud Pipes

Just curious, JO. What's the reading about 50 ft in front of the bike, where, for instance a car would be about to turn in front of the bike?

Loud pipes save lives, Yeah right... all the sound is behind the bike, 95% of the danger is in FRONT of the bike.

Loud Pipes Save Lives is a lame excuse to annoy people with obnoxious noise.
</end rant>
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Klinker · Posted: Tue Jul 28, 2009 1:41 pm Post subject: Re: Loud Pipes

owrstrich · Posted: Tue Jul 28, 2009 1:46 pm Post subject:

dont know whyoldbill...

i did get it directly in front about 5 feet in front of said moto with thottle cracked.. it was 91 db...

noise is quite predictable... in an open environment such as out of doors in an open space like a big giant parking lot... with a non directional noise source between 80 db and 120 db... the db generally drops about 3 db about every 5 feet...

50 feet ahead... im thinking that 112db at the riders ear would be about between 80 db and 85 db...

j o
_________________
yeeeeeehaaaaaaa...

Flying Duck · Posted: Tue Jul 28, 2009 2:26 pm Post subject:

Loud pipes save egos.

My Stebel Nautilus air horn supposedly puts out 139 dB and the factory BMW horns 135 dB.

Johnny: Bring your measuring euipment up to Hungry Dungee and we'll have a farting and burping contest. Laughing

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jpberens1994K1100RS · Posted: Tue Jul 28, 2009 2:57 pm Post subject: Db's at the Hungry Dungee

Burping & farting
From what I read on this site, that won't be no contest! Laughing

Un named moto heap individual should be a shoe in.

Gawd I wish I could be there.
No it ain't the miles, wifes 50th b-day surprise party this Sat.

I can't ride if my legs are broken. Terrible things can happen while your sleeping.
_________________
1993 K1100RS that I'd rather be riding FAST!
2014 Moto Guzzi Norge

ulm210 · Posted: Tue Jul 28, 2009 2:59 pm Post subject:

A few years ago...

sitting at a Dairy Queen with the family and an attention seeking guy goes by on one of those machines, guns it and makes about three little ones grab their ears and cry...

coincidentally a couple days/weeks later I see the same guy at a stop light and damn if he is not wearing ear plugs...

Some people just have no sense of irony...

Flying Duck · Posted: Tue Jul 28, 2009 2:59 pm Post subject:

Surprise your wife. Don't be there. Laughing

_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

jpberens1994K1100RS · Posted: Tue Jul 28, 2009 3:02 pm Post subject: surprise

No can do!

The aftermath would be horrific!

I already told her I'm going to HM next year though. I just need to plan further out.
_________________
1993 K1100RS that I'd rather be riding FAST!
2014 Moto Guzzi Norge

drmalacarne · Posted: Tue Jul 28, 2009 3:32 pm Post subject:

j o
I wonder how much noise a Remus could make....
Do you recommend a good and domestic dbl meter?
Gui
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1994 K1100LT SE n° 0267
1998 HD Heritage Springer 95th anniversary
Yes, a Hog and a Beemer can live together!

owrstrich · Posted: Tue Jul 28, 2009 4:29 pm Post subject:

we got the pro model... it runs about 5 k $...

but a couple years ago... one of our customers took readings with his radio shack unit when i was taking readings with my pro unit...

guess what... they were the same... and his unit is $4,950 less expensive...

here it is... only goes to 126db... mine goes to 190db...

j o
_________________
yeeeeeehaaaaaaa...

drmalacarne · Posted: Tue Jul 28, 2009 5:22 pm Post subject:

Thanks j o
_________________
1994 K1100LT SE n° 0267
1998 HD Heritage Springer 95th anniversary
Yes, a Hog and a Beemer can live together!

Off the grid · Posted: Tue Jul 28, 2009 6:33 pm Post subject:

I didn't find the Remus to be that loud. /shrug

My Scorpion Carbon on the FZ1 certainly gets up there when I am past 6k RPMs, and the off-road club I belong to has a 92db limit on bikes/quads. They test every bike entering the trail at half throttle. The KTM is about 90 cracked half open, and positively quiet at lower RPMs.
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