removing baffles from standard silencer

[parabiker]

Thinking of buying a cheap used standard silencer with a view to removing the baffles. (59 plate 1200 GSA). Has anyone got any experience of doing this and the resultant noise/affect on performance?

Cheers

Simon

 

[Sgt Bilco]

Not done it Simon but you'll probably get a bit more noise but very little, if any, performance gain. Any gains there come from removing the CAT.

 

[(RIP) Miff]

Yup. I did this to my 2005 1200. I left some of the baffle in, but if I did it again, I'd completely gut the can.

Remove the cover, then cut a hole in the can.

This is what you will find. Red arrow shows the gas route

Remove guts and weld up

Someone else on here has done the same, but they cut the end off the can rather than going in through the side

The can is now about as loud as a Micron road legal can on my ZZR600. I didn't get any noticeable performance gains, but it only cost me £40 to get done, as opposed to spending out on an aftermarket can. I like the look of the stock can.

 

[Myke Rocks]

A stupid question.

Why??????????????????????

Myke

 

[parabiker]

Why?

Cheaper than buying a akroprovic or alike. More pleasing to the ear maybe. Slightly more audiable when approaching pedestrians/cyclists/filtering.

Why not?

 

[Pukmeister]

My bike has an aftermarket exhaust end can with removable baffle. I have been running it without the baffle and its more noisy and runs less well. I have now replaced the baffle and the bike is smoother on part throttle/overrun, nicer to ride and less noisy. A forthcoming tour of Scotland means less noise, better audio (Mp3 and bike-to-bike) and hopefully better mpg with the baffle fitted too.

EDIT: As for the filtering argument, you could be dragging a brass band behind you with your bike on fire and they still wouldn't notice you.

 

[Giles]

I don't really get the whole noise thing. Performance yes, but I'd rather be in stealth mode and fly under the radar a bit. Some of the sports bikes round my neck of the woods are a fecking pain in the arse. I live surrounded by beautiful Kent country side, and on a gorgeous Sunday morning (like yesterday) all I can hear is some zx10 at 13,000rpm with a straight through exhaust ...... and he's about two miles away ....

 

[Dawg]

I don't really get the whole noise thing. Performance yes, but I'd rather be in stealth mode and fly under the radar a bit. Some of the sports bikes round my neck of the woods are a fecking pain in the arse. I live surrounded by beautiful Kent country side, and on a gorgeous Sunday morning (like yesterday) all I can hear is some zx10 at 13,000rpm with a straight through exhaust ...... and he's about two miles away ....

Ahh, music to my ears. What better way to spend a relaxing morning.

I guess though, we are all different, what pleases some annoys others. Such is life..

 

[Myke Rocks]

Agreed.

I don't really get the whole noise thing. Performance yes, but I'd rather be in stealth mode and fly under the radar a bit. Some of the sports bikes round my neck of the woods are a fecking pain in the arse. I live surrounded by beautiful Kent country side, and on a gorgeous Sunday morning (like yesterday) all I can hear is some zx10 at 13,000rpm with a straight through exhaust ...... and he's about two miles away ....

Yes, you summed up my feelings.
People who buy cars generally do not feel the need to smash open the saucepipe & take out the baffles. It makes driving too unpleasant.
For me, bikes are similar. Quietness is everything.

I was in France with 2 colleagues 2 years ago. My colleagues were on bikes without baffles in the exhaust. I could not travel closer thatn 300 metres behind them because of the noise. I let them go on ahead. Came round a corner & a french policeman was wearing out his pencil on them. He had 40 seconds warning they were coming. I was travelling at the same speed, & he did not even notice me passing.
Stopped in the next layby & polished my bike till they were "released".

Myke

 

[Bones]

I live surrounded by beautiful Kent country side, and on a gorgeous Sunday morning (like yesterday) all I can hear is some zx10 at 13,000rpm with a straight through exhaust ...

Music to my ears. I also live in the Kent countryside and I hear such bikes pass by then that is it. They are not constantly in earshot, just the odd blast. My Mille sounds strangled when I have to refit the standard can for the annual MOT

 

[Giles]

Ahh, music to my ears. What better way to spend a relaxing morning.

I guess though, we are all different, what pleases some annoys others. Such is life..

Music to my ears. I also live in the Kent countryside and I hear such bikes pass by then that is it. They are not constantly in earshot, just the odd blast. My Mille sounds strangled when I have to refit the standard can for the annual MOT

I'm close to the A28, south of Canterbury. Come the sunny weekends, it's all you can here! I haven't got a huge problem with it, but I do see why Mr and Mrs Miggins complain.

Big problems in Ashford at the start of the 2070 (popular route down to Brenzet and then Rye). Shed loads of noise complaints from the locals.

 

[Bones]

I'm close to the A28, south of Canterbury. Come the sunny weekends, it's all you can here! I haven't got a huge problem with it, but I do see why Mr and Mrs Miggins complain.

Big problems in Ashford at the start of the 2070 (popular route down to Brenzet and then Rye). Shed loads of noise complaints from the locals.

I know what you mean. I have a friend who lives in Rye, and when we (5-6 open piped Aprillia's, Buells, Guzzi, Triumph etc) took a Sunday breakfast run there it was traditional to stop outside his gaff and hit the rev limiters outside his bedroom window at 7am (he wasn't a biker BTW). He would pretend to be amused but I am sure his neighbours/misses weren't. I don't get up at that these days .

 

[Myke Rocks]

Music to my ears. I also live in the Kent countryside and I hear such bikes pass by then that is it. They are not constantly in earshot, just the odd blast. My Mille sounds strangled when I have to refit the standard can for the annual MOT

Bloody anti-social Hooligan!

Myke

 

[Dawg]

Bloody anti-social Hooligan!

Myke

Jeez, calm down, there are far worse things going on out there than a fruity exhaust note.
You could always find somewhere quiet to polish your bike, away from those simply enjoying themselves.

 

[Myke Rocks]

Excuse me, but

Jeez, calm down, there are far worse things going on out there than a fruity exhaust note.
You could always find somewhere quiet to polish your bike, away from those simply enjoying themselves.

What a silly suggestion. I never, ever polish bikes. I buy them to ride them, not admire them. Maybe twice a year I take it to someone with a hot wash & get them to powerwash it, but that's it. Is this quiet enough for you?

Myke

 

[Wapping]

I all I can hear is some zx10 at 13,000rpm with a straight through exhaust ......

Wimps..... It redlines way higher than that. Tell 'em to twist the throttle a bit more

 

[Big Nick]

I live just off the Helmsley TT road and must admit some loud bikes are a total fecking nuisance and ridiculously loud (as are some cars)

That said I do like the V-twin rumble of an aftermarket can but within reason

 

[Deleted account 190920001]

Why?

Slightly more audiable when approaching pedestrians/cyclists/filtering.

Why not?

surely that excuse ceases when you cease to be a teenager? Anticipate they are going to walk/cycle infront of you and you can then avoid them.

Personally my EXUP has a bit of a burble but I don't actually like the farty sound of the boxer so want to keep that as quiet as possible. I prefer quiet on something I do 300 miles plus a day on. Each to their own though.

 

[(RIP) Miff]

Why??????????????????????

Myke

Have you not modified your bike at all???


As I said, it's still quieter than some other road legal cans. If I wanted to travel that quiet, I'd take the car.

 

[Myke Rocks]

In have never had a bike with a noisier fitted.

Have you not modified your bike at all???


As I said, it's still quieter than some other road legal cans. If I wanted to travel that quiet, I'd take the car.

No, I have never fitted a noisier to bike or car.
Noisiers attract attention, both from those you upset in passing, and the forces of law & order.
I have no desire to upset either.
Yes, I quite like the sound at a racetrack, especially full house 2 strokes, but on the public road such a sound is an abortion.

Myke

(Noisier is the opposite of silencer)