zorst noise
 

hay

Does any one know in Db's how loud the Ten zorst is?

i ask as i really want a single MTC......but...i CANT STAND loud exhausts on any bikes. i know the MTC is louder and that some people say its only loud sat on the bike, i think the MTC is 90 Db's? or are there other single cans that are quiter?

Guess i should phone MTC and see if theres a different baffle or something, the standard Ten zorst is loud enough for me. i used to love the pops on the over run but now they just piss me off! need to block the AIS, i'll add it to my list of jobs :)

Cheers

I've measured the MTC @ 3000rpm and it showed as 91db. Now this was on an Android App, so I've no idea how accurate this is, but it does tally fairly well with other known readings. This is with the db killer in too, without the db killer, I can't tell as it destroyed the phone, my hearing and the garage door..... Ok so maybe not quite the door, but it is very loud!

The stock is 90db, or so the EC conformity statement says, so the MTC is slightly louder, about .1 times louder, if my school day physics is right and 100db's is twice the 'loudness' of 90db's. I'm sure someone will come along and correct me if I've cocked it up.

The noise is a different type of noise, stock has much less base, where as the MTC seems to be more of a feel - if you get my meaning.

The best thing to do is find someone with a MTC and listen yourself.

yeah, i know what you mean. Problem is bass travels further than highs.

I cant stand loud exhausts as i like green laning and think its better if my bike isnt loud, my neighbours wont like my early starts and i cant stand the drown on long journeys. how boring am i?!?! :sleepy2:

The MTC single IS quite loud. When you rev it has that sharp sound that cuts right through. I lost my db-killer after a week or so after I got mine. I was *ashamed* while driving to work. Luckily MTC sent me a new one free of charge.

I still thought it was loud, though, so I ended up contacting them asking if they had a more quiet baffle I could buy. They did. Cost me 40� and I don't think it's that much quieter actually.

But if, like you say, bass travels further, then maybe it's just me sitting right on top of it that hears it the most. I've more or less gotten used to it by now, but I still drive veeeery carefully when passing police cars just in case :)

Why not change back to the orginal exhuast?

Either that or get someone to start you bike after its warm and get them to rev it up a bit or hold a steady revs and you walk say a ring around it at 20m distance you will soon see at the front and bits to the side of the bike its not really that loud but its more of at the rear (ie the exit of the exhausts) is where you get the noise

The MTC is definitely louder. I'd say it makes the bike sound more or less like a big trailie from a decade or so ago - as others have said, a really bassy sound, rather than a modern sewing machine bike it is.

Still quieter than any enduro bike though.

I blocked the AIS while fitting mine, so I've traded a bit more noise on an open throttle for not sounding like half a dozen shotguns going off when I close the throttle :D

i know some people have cut the CAT out of the standard zorst, which makes it a little louder. Has any one got any experience of this AND a MTC can? just wondering how they compare?

im interested in MTC as they seem the popular choice for the Ten, well so do Akro's but i cant afford them.

So are they're other single cans out there....ones quiter than MTC's?

The reason i want a single can is too save weight and give me some room to put a decent sized tool tube which is nicely tucked out the way.....BUt i dont like loud zorst so im a bit ******ed really. :lol:

Pretty much. A single silencer is never going to be as quiet as twin silencers, unless it's much bigger - like the original box-type one.

There's not many single-can systems on the market, unless you're able to make your own link pipe, in which case you can use whatever silencer you can find.

Off the top of my head there's MTC, the SR one sold by Off-the-road.de, and the single Akra. The reason so many people go for the MTC (including me) is that they're less than a third the price of the others.

I don't agree about quiet exhausts, although I would advise discretion when opening the throttle.

For me the Ten needs to breath to work properly and with the inlet and zorst sorted and the AIS as Uber says the bike's transformed. Noise is good as it lets people (cars especially) know you're there.

My X racing pipe is quiet enough if I keep the throttle action down, but loud enough too if I give it the berries.

Typically if there is a removeable baffle you'll be fine and even then you can re-pack the can tighter.

Your bike will reward you if you get the gas flow right.

hi enduro 374, what pipe are you running and do you have any more photo,s
cheers ta

beany - it's an X Racing pipe ( http://www.xracing-exhausts.com/)

drop me a pm with your e-mail address for more pics.

Cheers

fitted a mtc single can this moring that i picked up at a resonable cost - mmmmm way too loud even with baffle in.no way is that 'road legal' - they are having us over. took it straiht off. any what to buy it? �100

Give them to me if your that worried.:irony:

I'll sell it to you, sure as hell not going to give it away!

annoying isnt it!! i really want a single can but there just too loud :(

I read somewhere about how you can fit an extra diffuser disk into the link pipe. i did email them but i recieved no reply.

maybe a dumb question but would a twin MTC setup be the same volume as a single can?

I think the cans are the same so I would expect it not to run any quieter.

:017: I would expect that if the cans are identical, then a bike with twin cans will be quieter due to the larger total volume of silencer and sound deadening material, combined with the lower exhaust gas pressure at the outlets. The question is how much quieter?

Tell me did you find it an absolute ***** to fit back the original exhaust? I got tired of the noise and fitted my original back on. I managed but Jesus christ I hope never to have to work on those two middle screws on the top of the box ever again!

Sent from my GT-I9300 using Tapatalk 2

ah did it once before where i had to strip the rear down and decided i'm not doing that again. so i modified the plastic heat shield so i can take them off the bike easy. then if you lossen the two capscrews with a waterpump pliers you can get the exhaust off easy.

see below. i used a saw lade to cut the middle bit out while on the bike. it doesn;t do much as there is three screws holding it on. you also can't see this bit when its on the bike.
once these are trimmed you can get the covers off. then undo the capscrews with the pump pliers. undo the mid section bolt that holds it to the frame - this gives just enough movement to enable you to pop out the end pipe and drop the tail section off.

http://i92.photobucket.com/albums/l3...e/P1010693.jpg

http://i92.photobucket.com/albums/l3...e/P1010690.jpg

Loud bike is a safe bike makes car drivers look.:Driving_6XFY3G:

that is a good thing about them....but it is the only good thing.

MTC Too Loud?
 

The removable baffle (at least on the single can) consists of a perforated tube. I have noticed baffles on other silencers have non-perforated tubes.
Try covering up some of these perforations with either a tube fitting over the baffle or rolling up some thin sheet metal (exhaust wrap) and insert it inside the baffle and hold in place with a couple of suitably sized PK (?) screws.
I'm currently "testing" the latter method and have covered up half of the baffle.
It would be great if someone could test this propperly (dyno runs etc) to make sure the balance and fuelling are right.

I can confirm that the MTC gets considerably louder if the baffle falls out in the middle of a rally :(

I know ive said this but im gagging for a single MTC can....i just cant stand loud exhausts!! i did email MTC about this...just too see if they had any ideas or thoughts but got no reply. :010:

Am i dreaming or did i read somewhere on this site about some one making a second baffle to fit in the link pipe???? But as said in above quote..baffles are fine but if its gonna monkey around with the performance of the bike then thats no good.

Yeah, IIRC, it was MTC themselves that supplied a blanking plate/disc that went in the entrance to the silencer and held in place by the link pipe.
TBH, it's probably better to restrict the flow into the silencer rather than out of it - less pressure for that tiddley little screw to have to endure!! (although either way I'm sure corrosion will get to it eventually). It's just easier to remove the baffle for experimenting rather than having to keep removing the silencer until you get the sound level & back pressure that suits (notwithstanding dyno testing for proper fuelling).
On the subject of that little screw, a shakeproof washer may help matters. But for Brunel-esque "belt & braces" you could always fit a steel hose clamp over it. Ouch, not pretty!

Use plenty of Loctite & then put a bead of heat proof silicone around the end of the baffle (the stuff they use to seal gas boiler flue pipes) to seal it against the inside of the pipe. Once a little carbon has built up, you'll never notice. If the screw falls out, at least the baffle won't follow.....

You'll need one of the high temp Loctite compounds. The regular ones are designed to break down when heated, and it's been well established that the gas flow out of the back of an MTC can is rather warm :D

Oh and a replacement baffle is �20 from MTC.

I went to the Stafford show the other week and saw the MTC show van. Had a chat with Martyn, a very pleasant chap and duly ordered a can at show price!:041:

Went to pick it up myself yesterday, only an hours drive away!

Oh just lurvely. Satin finish on the link pipe and satin black for the body with a carbon end piece.

Couldn't resist but fitted her last night. Instruction sheet spot on and an easy job with few tools, also gave me the opportunity to assemble my 'back end' with copper grease.

Well had to start it up and in a garage ...................certainly sounds like a single but perhaps a bit loud, we shall see.

I did see and hear GULGO's MTC and rode behind him and didn't think it was too loud. Mine is the same design so should be of a similar decibel.
Hope to get out this weekend so will report back with pics.

Steve

Come for a ride with my X Racing and no baffle and you'll probably not feel so conspicuous!!