No wof with these cans, so?

[98tls]

I suspect you would have to pack them around a central baffle tube, you can buy lengths from any decent muffler shop. (If your cans don't already have them...)

I tried using fine mesh (steel white-bait netting!) rolled up, tied with lacing wire and put it my cans - it made the noise more mellow but 100 or so km I had this long 'streamer' sticking out of the central hole in the can by about 500mm.

So next time I will do what I suggested to you...

So what your saying T is wrap the likes of what Lone riders suggesting around the baffle tube in place of the fibreglass exhaust packing,hard to believe its quiter than purpose made packing but its easy enough to give it a go.

[The Lone Rider]

Yep,xactly.

That'll be why it's fuckin loud.

Harley drag pipe baffles are similar, except instead of holes they have tabs that are folded down. It displaces the airflow from going right down the middle and out.


I'd try a pot scrubber over the end of the tube, held on with garden wire. The muffler packing I've seen is too dense to do that. That just leaves a question of if the gases start to blow a hole in the pot scrubber. Some other mesh material could be used to allow flow down the tube, and you just throw in pot scrubbers until it's sounding like you want.

Sounds cheapo, but it works. And nobody is gonna see the inside of the muffler once you get the end of that tube meshed.

Leave your current muffler packing on. You need to reduce flow down the middle of that tube.

[mossy1200]

Are they short cans mate?Considered cutting out a couple of mdf ovals drilling a hole in em and fitting them into the end of the cans to pass the wof but na am done with them there just to loud for my ears,10 years ago i probably wouldnt have cared but.

R77s . They do look short maybe 350 long.
I have the inserts at home. If mines warrent volume and same size you may have them. They look like a short pipe flanged slightly at the end. Let me know your pipe size.

[scumdog]

So what your saying T is wrap the likes of what Lone riders suggesting around the baffle tube in place of the fibreglass exhaust packing,hard to believe its quiter than purpose made packing but its easy enough to give it a go.

Yeah, worked for me (for a bit!) but no guarantees Mike!

Unbeleivable that it blew out the mesh in my mufflers - the exhaust was only going past the rolled up mesh, not through it.

[bogan]

All fine b but am wanting to know if aftermarket shorties with db killers fitted will pass a wof here.The pipe diameter things been done to death on the TL site many times with varied results ie oversize headers etc but all i am after is finding some cans that are A short B will get me a wof and not drive me nuts after a few hours riding.

I've heard db killers do get good results, and as I said, non-round cans will give a better result. As I don't own a TL, or even a firestorm (yet) I can't say exactly what it'd take, but going from what you have on atm, I'd think either of those features would make a noticeable difference, and likely get a wof, but to be sure you may as well look for both? Get the can's inner diameters as close as possible to the header diameter too.

[98tls]

That'll be why it's fuckin loud.

Harley drag pipe baffles are similar, except instead of holes they have tabs that are folded down. It displaces the airflow from going right down the middle and out.


I'd try a pot scrubber over the end of the tube, held on with garden wire. The muffler packing I've seen is too dense to do that. That just leaves a question of if the gases start to blow a hole in the pot scrubber. Some other mesh material could be used to allow flow down the tube, and you just throw in pot scrubbers until it's sounding like you want.

Sounds cheapo, but it works. And nobody is gonna see the inside of the muffler once you get the end of that tube meshed.

Leave your current muffler packing on. You need to reduce flow down the middle of that tube.

Gotcha,as you say sounds cheapo but its definately do-able,if it works all good,will let you know how it goes.

[The Lone Rider]

You'll have something like that attached to the end plate, inside the can.

Wrap the outer diameter with the muffler material, and find a way to reduce flow through the inside end. Stainless pot scrubbers. Mesh wire. Whatever. Hold it on with wire, cinched up using pliers to make it very tight (similar to how you would cinch up exhaust wrap)



Harley drag pipe baffles for comparison.

They have square tabs punched in them, with the tabs directed downwards so the air flow down the middle gets displaced outward back into the exhaust - reducing noise by reducing direct flow out the pipe.

[bogan]

That'll be why it's fuckin loud.

Harley drag pipe baffles are similar, except instead of holes they have tabs that are folded down. It displaces the airflow from going right down the middle and out.


I'd try a pot scrubber over the end of the tube, held on with garden wire. The muffler packing I've seen is too dense to do that. That just leaves a question of if the gases start to blow a hole in the pot scrubber. Some other mesh material could be used to allow flow down the tube, and you just throw in pot scrubbers until it's sounding like you want.

Sounds cheapo, but it works. And nobody is gonna see the inside of the muffler once you get the end of that tube meshed.

Leave your current muffler packing on. You need to reduce flow down the middle of that tube.

Good thing the tech has come a long way outside of harley circles then The idea in modern mufflers is to break up the sound waves through destructive interference and absorption while allowing the gases to exit without being impeded.

[98tls]

Yeah, worked for me (for a bit!) but no guarantees Mike!

Unbeleivable that it blew out the mesh in my mufflers - the exhaust was only going past the rolled up mesh, not through it.

Like Lone riders idea of keeping the fibreglass packing and fitting the pot scrubber things in the tube itself,what the hell its worth a go and its not like anyone cares what the inside of your cans look like.Be interesting to see if or how long it stays in there.

[The Lone Rider]

Like Lone riders idea of keeping the fibreglass packing and fitting the pot scrubber things in the tube itself,what the hell its worth a go and its not like anyone cares what the inside of your cans look like.Be interesting to see if or how long it stays in there.

Mine unraveled a little, and i just pulled the strands out. Eventually stopped. But yea, if not secured enough it will unravel and you'll have party streamers.

Should fit them over the end. Simply down the middle will make them blow out.

Over the end like cling wrap over a half used jar of pasta sauce.

[98tls]

Good thing the tech has come a long way outside of harley circles then The idea in modern mufflers is to break up the sound waves through destructive interference and absorption while allowing the gases to exit without being impeded.

Then again b tech has given us such wonderful things as abs and traction control soon to be followed by a high pitched warning device to awaken the rider when out of boredom hes fallen zzzzzzzzz.Nothing wrong with pot scrubbers and wire from time to time

[scumdog]

....and wake us up when we forget we already posted something.

[98tls]

....and wake us up when we forget we already posted something.

That tosmarty arse.

[bogan]

they do have their place, thing is its on the other side of the perf tube from the exhaust stream. A thin layer of steel wool is often used to stop the fiber strands from heading out the rear. Never hear of anyone putting it on the inside before, that shit be crazy.... and hazardous, take up the TEC spot on any rides with your mates, don't want them coping a steel flake in the eye if a visor is up (been there, done that, not recommended).

[scumdog]

they do have their place, thing is its on the other side of the perf tube from the exhaust stream. A thin layer of steel wool is often used to stop the fiber strands from heading out the rear. Never hear of anyone putting it on the inside before, that shit be crazy.... and hazardous, take up the TEC spot on any rides with your mates, don't want them coping a steel flake in the eye if a visor is up (been there, done that, not recommended).

I've already seen how far a home made 'muffling' system can be fired when the throttle is given a good blip...