SuzukiSavage.com - Straight Pipe a Stock Savage

james may

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Re: Straight Pipe a Stock Savage
Reply #75 - 08/25/10 at 12:23:46

In MA I think it's illegal to have a bike louder than 105db and a car louder than 99db or something like that.. they give bikes a small bit more wiggle room, but it's still gotta be pretty quiet.. I measured my bike with a dinky iphone app and it maxed out at 125db. There was a new law that allowed cops to just say it's loud and give you a ticket so they don't need to prove it.

"everything's illegal in massachusettes"-edge of darkness

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feelinjunky

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Re: Straight Pipe a Stock Savage
Reply #76 - 08/25/10 at 18:06:01

james may wrote on 08/25/10 at 12:23:46:

In MA I think it's illegal to have a bike louder than 105db and a car louder than 99db or something like that.. they give bikes a small bit more wiggle room, but it's still gotta be pretty quiet.. I measured my bike with a dinky iphone app and it maxed out at 125db. There was a new law that allowed cops to just say it's loud and give you a ticket so they don't need to prove it.

"everything's illegal in massachusettes"-edge of darkness

How did you measure it? The closer you put the meter, the louder the sound will be (obviously). The angle at which you place the meter, relative to the end of the exhaust, plays a very important role in sound intensity as well.

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james may

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Re: Straight Pipe a Stock Savage
Reply #77 - 08/25/10 at 18:09:12

feelinjunky wrote on 08/25/10 at 18:06:01:

james may wrote on 08/25/10 at 12:23:46:

In MA I think it's illegal to have a bike louder than 105db and a car louder than 99db or something like that.. they give bikes a small bit more wiggle room, but it's still gotta be pretty quiet.. I measured my bike with a dinky iphone app and it maxed out at 125db. There was a new law that allowed cops to just say it's loud and give you a ticket so they don't need to prove it.

"everything's illegal in massachusettes"-edge of darkness

How did you measure it? The closer you put the meter, the louder the sound will be (obviously). The angle at which you place the meter, relative to the end of the exhaust, plays a very important role in sound intensity as well.

turned on the app and dropped the phone 15ft away from the bike then revved it up.. I can set off car alarms with my bike.. I bet the stock exhaust would exceed 150db if you put your ear right up to it.. the noise generated by ear buds right in your ears is enough to deafen you, but 2ft away you can't even hear it.

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: Straight Pipe a Stock Savage Reply #78 - 08/25/10 at 18:17:15 the article I read said 80 db from 50ft from centerline while going 35 mph was the federal standard.
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feelinjunky

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Re: Straight Pipe a Stock Savage
Reply #79 - 08/25/10 at 19:43:27

verslagen1 wrote on 08/25/10 at 18:17:15:

the article I read said 80 db from 50ft from centerline while going 35 mph was the federal standard.

You got it! 80 db on grass road, 83 or 86 db on flat pavement I believe. 50 ft from centerline is a big difference in sound than 50ft from behind the bike as well. Try measuring it from the side and you'll be within a more normal range.

I would not doubt 150db if you put your ear right up the the exhaust, but that can't be practically done when the bike is moving, which is why the standard is 50ft.

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verslagen1

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Re: Straight Pipe a Stock Savage
Reply #80 - 08/25/10 at 19:45:14

feelinjunky wrote on 08/25/10 at 19:43:27:

verslagen1 wrote on 08/25/10 at 18:17:15:

the article I read said 80 db from 50ft from centerline while going 35 mph was the federal standard.

You got it! 80 db on grass road, 83 or 86 db on flat pavement I believe. 50 ft from centerline is a big difference in sound than 50ft from behind the bike as well. Try measuring it from the side and you'll be within a more normal range.

I would not doubt 150db if you put your ear right up the the exhaust, but that can't be practically done when the bike is moving, which is why the standard is 50ft.

What? the technician worried about getting run over?
I think its 50ft cause it's the typical distance from the centerline of road to house.

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feelinjunky

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Re: Straight Pipe a Stock Savage
Reply #81 - 08/25/10 at 21:45:38

verslagen1 wrote on 08/25/10 at 19:45:14:

feelinjunky wrote on 08/25/10 at 19:43:27:

verslagen1 wrote on 08/25/10 at 18:17:15:

the article I read said 80 db from 50ft from centerline while going 35 mph was the federal standard.

You got it! 80 db on grass road, 83 or 86 db on flat pavement I believe. 50 ft from centerline is a big difference in sound than 50ft from behind the bike as well. Try measuring it from the side and you'll be within a more normal range.

I would not doubt 150db if you put your ear right up the the exhaust, but that can't be practically done when the bike is moving, which is why the standard is 50ft.

What? the technician worried about getting run over?
I think its 50ft cause it's the typical distance from the centerline of road to house.

Well, I was thinking along these lines...why would anyone ever have their head right next to the pipe when the bike is moving? There's no practical reason in having measuring standards from a distance of zero.

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Ruddy

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Re: Straight Pipe a Stock Savage
Reply #82 - 08/31/10 at 11:29:02

Hashbrown wrote on 08/24/10 at 12:45:38:

just wanted to comment my experience today. i was driving my cage today since the weather was looking bad and was going to change lanes, checked my rear view and glanced at the side mirror and didnt see anything. was about to turn when i heard the low rumble of pipes approaching. i was in the slow lane and wanted to pass a car, the harley was behind me in my blind spot and i would have completely cut him off possibly runing him off the road if it werent for his pipes. he had short cut pipes that were loud but on the highway i didnt hear it untill he was right in my zone. this was the first time i was on the giving end of a potential disaster involving a motorcycle and i thought of this post immediately after it happened

i wasnt annoid with him or the sound, and i thanked my lucky stars that he had pipes that i could hear. Believe me as a driver of a car on occation, i would much rather be temporarily annoyed with a loud pipe then have to suffer the lifelong guilt of killing someone.

If you adjust your mirrors properly, you won't have blind spots. You should have to tilt your head to the left almost to the side window to see the side of your car. On the right, you should have to turn your head to see the side of the car. I can see a car (or bike) coming up from behind in the left in the rear view mirror and immediately pick it up in the side mirror as it begins to disappear from the rear view mirror. Same thing on the right side. Try it. BTW, you should adjust your bike mirrors so you can see who's overtaking you--not just your sleeves!

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ralfyguy

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Re: Straight Pipe a Stock Savage
Reply #83 - 09/01/10 at 16:04:14

Coming from Europe (Germany) I am sometimes simply shocked what cops in the US are allowed to do. I sometimes hear stories about what they did and CAN do, that it reminds me more on Communism than anything else. Besides for the fact that they usually are on the prowl in their cruisers alone by themselves, that anything done like that wouldn't stand up in a german court. They require TWO officers in a patrol car any time they're on duty. In my town here in Oklahoma, whenever there's a wreck or something, no matter what the person at fault did wrong, it still remains at the discretion of the police officer to issue a citation! That is nothing but a bad joke!

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MrBrownTX Full Member Offline Posts: 242 Caddo Mills TX Gender:	Re: Straight Pipe a Stock Savage Reply #84 - 06/22/11 at 16:34:33 Hahahahahaha I saw this thread and thought, allright a six page discussion on straight pipes this is going to be alot of good info... It turns out it was just a long unwinable argument.
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Jwag11 YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 11	Re: Straight Pipe a Stock Savage Reply #85 - 06/22/17 at 14:52:37 Is straight piping a good idea I'm on a low budget
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Eegore Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 8343	Re: Straight Pipe a Stock Savage Reply #86 - 06/22/17 at 15:06:47 Jwag11 wrote on 06/22/17 at 14:52:37: Is straight piping a good idea I'm on a low budget No idea. Definitely cheaper in parts, but from what I've been told on here I can not tune a carb with a straight pipe. I might start a thread on that specific topic.
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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28657 Tucson Az Gender:	Re: Straight Pipe a Stock Savage Reply #87 - 06/22/17 at 16:40:26 If your setting off car alarms, you're too loud... That gives us all a bad name... Muffle that suckker...
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Dave

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Re: Straight Pipe a Stock Savage
Reply #88 - 06/23/17 at 02:35:11

No, an open straight pipe is not a good idea...it is too loud and it causes a sag in the mid range performance. The engine runs smoother and provides more "usable" power with a baffled pipe - as most riding is done in the rpm range where the sag occurs.

Most of the articles on this subject are Harley related - but they do apply to the Savage.

Here is the applicable statement from a Harley tuning Guru:
And Do Not install straight, open pipes, especially long ones. If you do, forget everything I've said. Straight open exhaust-equipped engines run poorly in the 2,000- to 3,500-rpm range and no amount of carb tuning can fix that.

http://forums.cycleworld.com/showthread.php?t=34784

And here is an applicable YouTube video:
https://www.youtube.com/watch?v=KjKUKhHQLHg

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SALB Serious Thumper Offline FSO Posts: 668 Whittier, AK Gender:	Re: Straight Pipe a Stock Savage Reply #89 - 06/23/17 at 09:28:16 Jwag11 wrote on 06/22/17 at 14:52:37: Is straight piping a good idea I'm on a low budget If you're on a budget, check out the Dyna/Sportster conversion in the tech section. You can pick those up for under $40 if you're lucky.
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