Are better quality mufflers straight through?

[nzspokes]

Was looking at an unbranded muffler today and it was straight through, was told it was a good one and had a good tone.

Are better quality mufflers like this? Ive not seen one off a bike.

I dont think my stock ones are straight through.

[ducatilover]

I had a straight through Moriwaki on my Bros650, worked well and a reputable brand, amazing sound.
My ZZR600 had twin Neptune cans, straight through, worked well, sounded good.
My VT250 spada had several 'zorsts: standard, crap.
Debaffled stock 'zorst, crap, sounded better...
Reverse megaphone: ont too bad, got "good" power gain with jetting and fuck it was loud!
Twin cans, chopped/gutted/straight through made from standard cans: Worked the bestestest and sounded good.

It also depends on what you want in terms of power delivery, but I think many decent quality ones are straight through.

[The Pastor]

edit .

[avgas]

Horses for courses.
I have had all types, and now I am starting to go back to more restrictive flow ones. Makes the bike more useable (I have a baby at home).
Performance wise the gains can be lost through various other things anyway.

The really loud pipes I have had on various bikes just piss you off after a while.........cruising on the motorway at 4,000 RPM only to arrive at your destination and to have a crappy time due to the dull hummmmmmmm in your head and asking everyone "WHAT?!" when they talk to you.

I'm all for a good note, but I prefer a nice ride any day.

[nzspokes]

Horses for courses.
I have had all types, and now I am starting to go back to more restrictive flow ones. Makes the bike more useable (I have a baby at home).
Performance wise the gains can be lost through various other things anyway.

The really loud pipes I have had on various bikes just piss you off after a while.........cruising on the motorway at 4,000 RPM only to arrive at your destination and to have a crappy time due to the dull hummmmmmmm in your head and asking everyone "WHAT?!" when they talk to you.

I'm all for a good note, but I prefer a nice ride any day.

I get that, fair call.

[bogan]

As avgas says, horses for courses. Worth mentioning a lot of people swear by the supertrapp style for power and queitness. Personally I think a well designed straight through muffler is the way to go; better tone and power than the other types, and can be very quiet. In fact my flatmate who has hearing sensitive enough to make her swear at flies, often doesn't even notice me coming or going on my bike. Mine is a 280mm long oval can with twin perf tubes, after a very long midpipe.

[Paul in NZ]

There are only 3 'types' of mufflers

Absorption Muffler: This design is most commonly used by performance muffler manufacturers as it gives the least resistance to the exhaust gases that pass through. Absorption mufflers work by using a straight perforated tube that's en-cased or wrapped in sound deadening material. In this design, the exhaust gases are able to pass through with almost no resistance while the various frequencies of sounds contained in the gases are absorbed by the material around the perforated tube. Typical materials used for sound deadening are fiberglass, stainless steel mesh and ceramics.

Diffusion Muffler: A diffusion muffler splits the flow of the exhaust gases up into a series of different paths using a series of plates and tubes called baffles. These baffles cause the exhaust to follow a longer path when passing through the muffler. As the exhaust twists its way through these series of tubes and plates, it looses velocity (energy) and in so doing, several sound frequencies are lost and reflected. This in turn tunes the exhaust note that exits the muffler.

Hemholtz Chamber: Also popularly called a Cancellation Muffler or Resonator. This form of muffler derives its name from the German Scientist, Herman Hemholtz, who made several discoveries in the field of acoustics and medicine. The Hemholtz chamber is designed very carefully to be a specific volume and length. As the sounds in the exhaust gases enter on one end, a resonant frequency is established in the chamber that causes all other sounds at that specific frequency to be cancelled out. As this type of muffler only cancels out one frequency in the exhaust, they are rarely used by themselves, but in conjunction with a Diffusion or Absorption Muffler.

[slofox]

Wot avgas said. I got pissed off with loud exhausts too after a while.

[yod]

There are only 3 'types' of mufflers

Absorption Muffler: This design is most commonly used by performance muffler manufacturers as it gives the least resistance to the exhaust gases that pass through. Absorption mufflers work by using a straight perforated tube that's en-cased or wrapped in sound deadening material. In this design, the exhaust gases are able to pass through with almost no resistance while the various frequencies of sounds contained in the gases are absorbed by the material around the perforated tube. Typical materials used for sound deadening are fiberglass, stainless steel mesh and ceramics.

Diffusion Muffler: A diffusion muffler splits the flow of the exhaust gases up into a series of different paths using a series of plates and tubes called baffles. These baffles cause the exhaust to follow a longer path when passing through the muffler. As the exhaust twists its way through these series of tubes and plates, it looses velocity (energy) and in so doing, several sound frequencies are lost and reflected. This in turn tunes the exhaust note that exits the muffler.

Hemholtz Chamber: Also popularly called a Cancellation Muffler or Resonator. This form of muffler derives its name from the German Scientist, Herman Hemholtz, who made several discoveries in the field of acoustics and medicine. The Hemholtz chamber is designed very carefully to be a specific volume and length. As the sounds in the exhaust gases enter on one end, a resonant frequency is established in the chamber that causes all other sounds at that specific frequency to be cancelled out. As this type of muffler only cancels out one frequency in the exhaust, they are rarely used by themselves, but in conjunction with a Diffusion or Absorption Muffler.

You learn something new every day.

[avgas]

Wot avgas said. I got pissed off with loud exhausts too after a while.
WHAT??????!!!!!!!! Sorry I really need to get the Yoshi repacked, your going to have to speak up

[slofox]

WHAT??????!!!!!!!! Sorry I really need to get the Yoshi repacked, your going to have to speak up

EH? I'm a bit deaf after that bike!

[CookMySock]

I used to wear earplugs all the time, until I got a loud pipe. Now the music is just too good to block it with earplugs. :Punk:

All the loud(ish) pipes I've seen have been straight-through types.

[Madness]

I used to wear butplugs all the time, until I got a loud pipe. Now the music is just too good to block it with butplugs. :Punk:

All the loud(ish) pipes I've seen have been straight-through types.

Hey, DB! Where you been bro?

[actungbaby]

Horses for courses.
I have had all types, and now I am starting to go back to more restrictive flow ones. Makes the bike more useable (I have a baby at home).
Performance wise the gains can be lost through various other things anyway.

The really loud pipes I have had on various bikes just piss you off after a while.........cruising on the motorway at 4,000 RPM only to arrive at your destination and to have a crappy time due to the dull hummmmmmmm in your head and asking everyone "WHAT?!" when they talk to you.

I'm all for a good note, but I prefer a nice ride any day.

yes me too hes 2 yrs old know loves the bikes . yeah agree the vfr 750 sounds good with two bros pipe , but quite is nice

you dont have wheel bike down driveway to start it , after living in noisey street you get over the exhust sounds waking early hours

Is that dam low end rumble yuk. have to agree on trip my cbx 400 4 n 1 was dam anoying witht hat drone aghhh

twins sound better in that reguard , but dont see point of lound just to be lound. keep to the track i say

I ended up taking the 4 n 1 pipe of going back to custom made standred pipes that had chromed myself at work

Mind you pipes are better mad these days sound better too , my old cb 400 n sounded so boring like lawn mower

they said review i read that went out to airport to record jet taking of for cbx 1000 honda pipes and must recored the air port lawn mower

by accident for my old bike grrr stoped reading the review hehe

[CookMySock]

Hey, DB! Where you been bro?Hey man, just been sorting shit, including my shit head. :no:

[avgas]

While a lot of people remove them, I really liked the exup valve on my FZ1.
Meant that when starting and cruising around town the bike was quite subtle due to the exup being relatively closed - but really booting it out in the open road and the bike would howl.

Perhaps I should get another exup bike?

[Tigadee]

I'd like my XJ400 to sound like this:
http://www.youtube.com/watch?NR=1&feature=endscreen&v=C_vBADx98EE

Any idea what pipe that is?

[avgas]

I'd like my XJ400 to sound like this:
http://www.youtube.com/watch?NR=1&feature=endscreen&v=C_vBADx98EE

Any idea what pipe that is?
Nope......but.....
Sounds similar to a Kerker similar to this
<iframe width="420" height="315" src="http://www.youtube.com/embed/5fYVmr-NuQA" frameborder="0" allowfullscreen></iframe>
I had one on the FZR400 before I toned her down. I have a video with the new exhaust on........will see if I can find one with the old one.