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  #1  
Old 16th August 2010
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Post Improve sound of my stock exhaust, suggestions?

Looking for recommendation or suggestion on how to improve the sound on a stock 1200x exhaust system without lossing too muchperformance or breaking the bank.
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  #2  
Old 16th August 2010
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Bunch of stickys in the exhaust section.
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  #3  
Old 16th August 2010
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Default posted this in another thread, but will add it here too

I believe the stock slipons on the 48 are the same as on the nightster, if not, disregard the following.
If you are just looking for more sound and if they're the same stock slip-ons that are found on a nightster....

You can do the following with the slipons still installed on the bike...actually a very fast process...

Take a long, pointed metal rod about 5/8" in diameter, center it in the middle of the inside of your slipons onto the center plug inside,
than get a heavy hammer and pound the rod through the plug with a couple good wacks.

Do this with both slipons. You will get a nicer sound without a dip in performance.

The center plug may just dislodge before you get a hole in it, the welds aren't the strongest holding them in. No worries if they do, will still get the same sound, you'll just want to make sure if one plug totally comes out that you have the other plug come out as well. You will hear them rattle around if they do dislodge... just twist the throttle and they'll come flying out.

I think there may even be a video out on youtube showing someone do this.
Seen this done, in person, on a nightster and the sound is a good improvement. It's not like cycle shacks, but will definitely give you more sound than stock without mod.
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  #4  
Old 16th August 2010
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Default as posted on your other thread

sorry no drawings, I made it up as I went, I didn't see the concept anywhere else.

my torch was out of oxygen and acetylene I used a little map gas torch to braze it together.

picture a flat piece of metal twisted full sided,(same as ID of muffler) ahead of the baffle, then notched out for the baffle and braze to the baffle.

the baffle was tapered to a point, on the inlet side, every thing had to flow around the outside of it. into the center of the baffle to exit.
I opened OEM holes to about 3/8" drove a tapered punch through every 1/4" hole.

(this gave the baffle a radius or lead on every hole)

I have given out advice / ideas, that people have made money on, with out even a thank you. (free from my end)

thats why I didn't take pictures. however I felt like sharing one more time, with this post.

exhaust has great bottom and mid range, top end isn't too shabby either. the deep tone is great. I have a nice loppy idle maybe a little choppy even. ("W" cams 10:1 compression)

I just know It has way more response then the stock baffles did or even with the opened up holes. the swirl was a huge difference.
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  #5  
Old 16th August 2010
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Quote:
Originally Posted by xHDrider View Post
sorry no drawings, I made it up as I went, I didn't see the concept anywhere else.

my torch was out of oxygen and acetylene I used a little map gas torch to braze it together.

picture a flat piece of metal twisted full sided,(same as ID of muffler) ahead of the baffle, then notched out for the baffle and braze to the baffle.
Take a look at the inlet of your stock 1970 Triumph Bonneville mufflers (if you have them) and you will see a crossed and twisted swirl vane in the shape of an X that spins all of the exhaust against the fiberglass lined walls of the straight through mufflers. It was a very effective design that could hardly be improved on for performance while it took out all of the harsh metallic sound that was present in most of the aftermarket mufflers excepting the Dunstalls.
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Old 16th August 2010
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Buy slip on drag pipes like mine. Only $100. Love them too!
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Buy slip on drag pipes like mine. Only $100. Love them too!
But drags will affect his low speed power which he says he doesn't want to lose.
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  #8  
Old 16th August 2010
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i agree with the punching holes in the baffles. i did it. took about 1 min. not super loud but makes it sound like a harley should.

*dont remove the entire baffle asy. though. sounds terrible. but i am super happy with my cycle shacks. too loud for some, but i like it and they were $140
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Originally Posted by Don Burton View Post
But drags will affect his low speed power which he says he doesn't want to lose.
I have no problems with low speed power on my bike at all!??!
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Old 17th August 2010
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Originally Posted by IronSportMan View Post
I have no problems with low speed power on my bike at all!??!
As measured by? Drags are notorious for putting a hole in the powerband.
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