XS11 Stock Exhaust Cutaway

[DGXSER]

Well, as a result of my recent "incident" I have a right side exhaust that was basically useless due to a large hole tore through it. Sooo, as some of the members have queried as I have int he past what exactly goes on inside there.....

The inlet into the exhast, baffle plates to restrict flow into the first soud chamber...



To exit this chamber the gasses pass through tubes to get the large end of the megaphone and another baffle plate....



Here you can look close and see the end plates in my exhaust had been drilled out....



Then the exhaust has to pass down through the holes in that end baffle plate into the second sound chamber to go out through the middle exhaust pipe...



Hope that clears some things up for someone.

[dbeardslee]

Looks like somebody got an angle grinder for father's day . Cool cut aways, Don.

[3Phase]

The inlet into the exhast, baffle plates to restrict flow into the first soud chamber...

That's awesome! Hopefully I won't have the same opportunity to cut up my Standard exhaust but it looks like Yamaha welded one of their trademark tuning forks to the back of a lollipop.

[DGXSER]

You know Scott, even though it had a tear of about four inches in the side of the megaphone section, basically just in front of the last baffle plate, it still felt sacreligous to cut it up like that.

I have to agree, that inlet section looks like some one took a bunch of sheet metal scraps laying around and welded them up to fill the void.

[3Phase]

You're still here and in good shape, Don, don't sweat the pipes or the bike and thanks for posting the pictures!

The tuning fork bit of scrap keeps the exhaust gas from whistling across the cutout in the baffle plate (like a finger stuck in front of your lips when blowing across the top of a beer bottle or a tightly-held sheet of paper) and damps vibration and acts as a heat sink in the plate itself from hot exhaust pulses so it won't rattle, crack or break loose inside the pipe: simple, cheap and effective!

[XS1100_OEM4ME]

Pop, crack and back fire?

Great pic's of OEM exaust!!!! Yamaha put all that stuff and chambers in there just for fun? No, the millions they spent on making the exaust right is in line with the way they tune a piano. Anyone wounder why you spent hours trying to get rid of that "pop" or lean/rich condition, what pipes do you have? And realy, I know it is fast but tell me is there no back fire and pop??????????????